Battery Batch

PSP fans like me were almost certainly wondering if you could make a pandoras battery slim psp. The answer is yes you can. The instructions for making the battery for your high powered electronic device are below. Enjoy and share them with your friends.

I went to WalMart and purchased a 3.6v 2200mAh battery (since this is the only one they had) about 37 bucks. First open the battery with small flat head screw driver by prying around the battery to snap it open. Becareful around the end that makes contact in the PSP as its directly connected to the pcb board on top of battery.

The top part of the battery should come off, take your time to make sure not to damage pcb at top and battery cells inside.

The newer batteries and the 2200mAh has a smaller pcb at the top then the forum at benheck forums depict but it has the same chip that needs to be altered. It has a C04 printed next to it on the pcb. I heated mine up with a soldering iron then lifted it with a tip of a razor blade, then removed it completely from the ic chip as I dont intend to use it as a normal battery. You may solder the leg back and use it as normal battery if you wish.

The battery is now a Pandora Battery (click BenHeck link for info on how it works). To verify this just pop it into slim psp without memory stick and see if power lights up green if so its working.

Making the Slim Magic Memory Stick

I used the Sony Pro Duo 1gig stick that came with my Daxter pack. You can use any Pro Duo as long as its under 4 gig, 256/512/1 gigs work great. I won’t go into detail on fake Pro-Duo’s etc.. just make sure its a genuine pro-duo stick.

You will need to use a Pandora GUI there is a couple out there this is the one I used.

I ran the GUI with my Memory Stick reader. If you are doing this with your PSP you will need to remove the stick and reboot the PSP after each step.

Make sure you’re on the Pandoras Battery Tab as shown in picture

First load the 1.5 firmware either on your hard drive or download it with direct link in GUI.

Make sure your PSP Memory stick drive letter is selected. Mine was H: but yours might be different. Click PSP/GAME since your psp slim is on standard sony firmware.

Format the Memory Stick with step 1 on GUI.

Copy pandora box files to Memory Stick.

Step 3 on GUI is not required as this runs pandora battery installer on phat psp and you already have a hardware modded battery.

Last write IPL to memory stick. This puts the IPL and makes the memory stick bootable when psp goes into service mode.

Next click on the Slim and Lite tab at top.

Load 3.40 and 3.50 firmware updates. Either from hard drive again or direct downloads.

Stage 1 should be set if you just performed Pandoras Battery tab section. If not make sure the PSP drive letter is set on Pandora Battery tab.

Press the copy files button on stage 2. This copies the m33 3.6 firmware to your memory stick. This will put them in the correct directories and names for you.

Stage 3 you cannot run since you will need a phat psp to copy these required files over. This is what had me stumped for a while. When I tried to boot the psp with the memory stick made with this GUI and the pandora battery it would go green but the memory stick would not be accessed. You will need to get the kd and registry directories from someone who has made a Slim magic memory stick. I asked around and got these and this was what was missing, I am sure if you ‘google’ or ask nicely someone will send these too you.

These are the necessary .prx .dregs etc.. that need to be accessed on boot up. The GUIs do not create these, I tried a few other GUIs as well none of them did. After I just copied these to the root of my memory stick, I replaced the pandora battery in the slim and WHOLA the memory stick was accessed and the psp shut down after a few seconds. You will not see anything on your screen as the 1.5 kernel does not display on new slim screen. The only way you can tell its working is orange MS access light and green light turning off. Then its safe to replace your battery with a standard one and reboot psp.

Enjoy your home brew. This is my first attempt to describe how to get this working so there may be parts I need to edit to describe better, but it drove me nuts for 8 hours to figure how to get a slim flashed with M33 firmware without a Phat PSP. With the hardware mod battery, it was now possible to flash without a Phat psp with just a few files and programs.

Here is how you get laptop lithium ion battery life. It is so important to find out just how long you can surf without having to plug back into a wall socket. So we would estimate that it will take a good 10 Amp charger about 5 Hours to recharge a 50 Amp-Hour battery. Actually this rough estimate usually tells us how long it takes to recharge the battery to about 80% of its capacity. It turns out that it will probably take an equal amount of time, or another 5 hours to recharge the last 20% of the battery capacity. Keep in mind also that many of the 10 Amp chargers on the market today are what we call taper chargers. They typically sell for 25.00 to 40.00 retail. With those types of chargers the charge times that we just calculated probably need to be doubled.

Hard to find lithium ion battery 12v 17ah. This battery pack holds one of the longest chargest out there, just plug it into what ever device that you are running and it will supply it with the juice. Charging and is charging power are maintained constant. That means that the charging lithium ion battery current goes down with the super-capacitor voltage going up. When the supercapacitor voltage gets near to the nominal voltage the charging current diminishes not to get over the nominal super-capacitor voltage. Charging by pulsating current corresponds to the operational conditions on a car.

Most remote power systems are wired for 12 volts. Some larger systems are wired for 24 volts. It’s a delicate call to make this decision in most cases. Even larger voltages are used in some huge systems. The main advantage of 24 volt systems over 12 volts is that wire size is cut in half throughout the system. Besides affecting battery bank wires, this includes solar panel, wind generator and hydro plant wiring, too–if you have hundreds of feet of wire, this cost can add up quickly. The disadvantages of using 24 volts are that 1) you’ll need an expensive, power-wasting transformer to run 12 volt lights and appliances, and 2) if you want to buy a cheap, Chinese inverter, they are only available in 12 volt versions. More expensive inverters are available in different voltages. Here is a battery diagram for a 24volt system.

There is nothing like cutting there some dirt in your Jeep m38a1, but you have to make sure that you have all the parts to repair anything you break. Jeeps are build rock solid, but with time even the product needs some parts and repair. When this happens where do you go for m38a1 battery box lid latch and other parts, well you the answer is right here.

Below is instructions on how to hook you your battery tender jr

Battery Tender® JUNIOR &
Battery Tender® PLUS
Battery Chargers
12 & 6
Volt
Models:
750 Milliamp & 1.25 Amp
& 8 Volt Model 1.25 Amp
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS: This manual contains important safety and operating instructions for Battery Tender® Chargers, both the 12 & 6 Volt 750 Milliamp BT Junior and 12, 6, & 8 Volt 1.25 Amp BT Plus models. CAREFULLY READ THESE INSTRUCTIONS BEFORE USING THE BATTERY CHARGER.
WARNING AND CAUTION LABEL DEFINITIONS:
A WARNING
WARNING indicates a potentially hazardous situation, which, if not avoided, could result in serious injury or death.
CAUTION indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury.
CAUTION
CAUTION used without the safety alert symbol indicates a potentially hazardous situation that if not avoided, may result in property damage.
GENERAL PRECAUTIONS
A WARNING
Battery posts, terminals and related accessories contain lead and lead components, and other chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Always wash your hands after handling these devices.
A WARNING
Do not operate the battery charger with damaged AC power cords or plugs or DC output cords or accessories - Replace accessories immediately. Since neither the AC power cord nor the DC output cord can be replaced, if either cord is damaged the battery charger should be scrapped. The limited warranty does not cover AC power cords or DC output cords that are damaged in use.
CAUTION
WORKING WITH LEAD ACID BATTERIES AND BATTERY CHARGERS:
All lead acid batteries have the potential to emit gasses that may combine into a combustible or explosive mixture. In many cases, it is possible that lead acid batteries will emit these gasses during normal discharge and charging operations. Because of this potential danger, it is important that you follow the precautions recommended by both the battery and battery charger manufacturers before using either one. For example, do not exceed the recommended maximum recharge rate (charger output current limit), or remove cell caps while charging flooded batteries.
CAUTION
CHARGER VOLTAGE COMPATIBILITY: NEVER use a battery charger unless the battery voltage matches the output voltage rating of the charger. For example, do not use a 12-volt charger with a 6-volt battery and vice-versa. CHARGER LOCATION: LOCATE the charger as far away from the battery as is allowed by the length of the output cable harness. NEVER set the charger above the battery. NEVER set the charger on a surface constructed from combustible material. NEVER place the battery, the charger, or any of the electrical connections between them in an area that is likely to become wet. EXCESSIVE MOISTURE: Do not expose the battery charger or any of its electrical connections (either AC or DC) to rain, snow, or extremely high, condensing humidity.
CHARGER ATTACHMENTS: Do not use attachments that are not recommended or sold by the charger manufacturer. To do otherwise may result in the risk of electric shock, fire, or possibly some other unforeseen potential personal injury situations.
HANDLING POWER CORDS: When handling electric power cords, always pull by the plug rather than by the cord. This will reduce the risk of damage to both the plug and cord, and it will minimize the likelihood of electric shock resulting from that damage.
LOCATION OF POWER CORDS: Make sure all electric power cords are located so that they cannot be stepped on, tripped over, or otherwise subjected to damage or stress.
MONITORING SEALED & NON-SEALED BATTERIES: When leaving a battery charger connected to either a sealed (AGM or GEL) or non-sealed (flooded battery) for extended periods of time (weeks, months, etc.), periodically check the battery to see if it is unusually warm. This is an indication that the battery may have a weak cell and that it could go into a thermal runaway condition. If the battery releases an excessive amount of gas or if the battery gets hotter than 130°F (55°C) during charging, disconnect the charger and allow the battery to cool. Overheating may result in plate distortion, internal shorting, drying out or other damage. For flooded batteries, also check individual cell fluid levels against manufacturer’s recommendations for safe operation.

A WARNING
ELECTRIC SPARK & OPEN FLAME: NEVER smoke or allow a source of electric spark or open flame in the vicinity of the battery or engine. (For example: Don’t charge the battery next to a gas water heater.) VENTILATION: Do not operate the charger where ventilation is restricted. The intent here is to allow sufficient airflow to minimize and dissipate the heat generated by the charger and to diffuse the gasses that may be emitted by the battery.
CHARGER MAINTENANCE: NEVER disassemble the charger or attempt to do internal repairs. Take it to a qualified service technician. Assembling the charger incorrectly may result in the risk of electric shock or create a fire hazard.
A WARNING
EXTENSION CORDS: An extension cord should not be used unless absolutely necessary. Using improper extension cord could result in a risk of fire and electric shock. If extension cord must be used, make sure that:
> The pins on the extension cord plug have the same number, size, and shape as those of the AC power cord plug on the charger;
> The extension cord is properly wired and is in good electrical condition; and
> The wire size is as specified in Table 1 below.
TABLE 1: EXTENSION CORD LENGTH & MINIMUM SAFE CONDUCTOR SIZE
Note: The smaller the AWG number, the larger the conductor diameter.
Length of Cord (feet) 6 to 100 101 to150
Length of Cord (meters) 1.8 to 30.5 30.8 to 45.6 Size of Conductor (AWG) 18 16
Conductor Diameter (mm) 1.25 1.5
PERSONAL PRECAUTIONS
A WARNING
WHEN YOU WORK NEAR LEAD-ACID BATTERIES:
1. Someone should be within range of your voice or close enough to come to your aid if you have an accident;
2. Have plenty of fresh water and soap nearby in case battery acid contacts skin, clothing, or eyes;
3. Wear complete eye protection and protective clothing. Avoid touching your eyes while working near a battery. If battery acid contacts your skin or clothing, wash immediately with soap and water. If acid enters an eye, immediately flood the eye with running cold water for at least 10 minutes and get medical attention as soon as possible;
4. Be extra cautious when handling metal tools around a battery. If you drop
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a metal tool near a battery it might spark or create a short circuit between the battery terminals and some other metal part. Either event may cause a dangerous electrical shock hazard, a fire, or even an explosion;
5. Remove all personal metal items such as rings, bracelets, necklaces, and watches when working with a lead-acid battery. A lead-acid battery can produce a short-circuited current high enough to weld a metal ring or other piece of jewelry, causing a severe burn;
6. Use Battery Tender® Junior and Plus Chargers for charging lead-acid batteries only. They are not intended to supply power to an extra low-voltage electrical system or to charge dry-cell batteries. Charging dry-cell batteries may cause them to burst and cause injury to persons and damage to property;
INFORMATION NOTE ABOUT DRY-CELL BATTERIES:
There are some wet, non-spillable, lead acid batteries on the market whose manufacturers’ make the claim that they are dry-cell batteries. These batteries are sealed, gas-recombinant, starved electrolyte, possibly with AGM (Absorbed Glass Mat) type construction. It is perfectly safe to use Battery Tender® Junior and Plus Chargers to charge these types of batteries. The dry-cell battery warning is intended for rechargeable or non-rechargeable alkaline and other similar types of batteries. If you have any doubt about the type of battery that you have, please contact the battery manufacturer before attempting to charge the battery.
7. NEVER charge a visibly damaged or frozen battery.
PREPARING TO CHARGE: First, follow all General & Personal Precautions as previously explained, and then continue.
A WARNING
IF THE BATTERY MUST BE REMOVED FROM THE VEHICLE:
1. To avoid an electric arc (or spark), turn off or disconnect all of the accessories in the vehicle. Then always remove the cable that is connected to grounded terminal from battery first;
2. If necessary, clean the battery terminals. Be careful to keep the corrosion and other debris from coming in contact with your eyes;
3. If the battery is not a sealed battery, then if necessary, add distilled water to each cell until the battery acid solution reaches the level specified by battery manufacturer. Do not overfill;
4. Before inserting the charger AC power plug into the electrical outlet, check the polarity of the battery posts, and attach at least a 24 inch long 6 (AWG) insulated, battery extension cable to the negative battery post. Then connect the appropriate charger DC output connectors to the battery and the extension cable, positive to positive and negative to negative. Never allow the alligator clips or terminal rings to touch each other after they are connected to the battery charger.
5. Connect the AC power plug to the electrical outlet.
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WARNING
IF THE BATTERY REMAINS INSTALLED IN THE VEHICLE:
1. DO NOT CONNECT THE CHARGER AC POWER PLUG TO THE ELECTRICAL OUTLET UNTIL ALL OTHER CONNECTIONS ARE MADE!
2. Place both the AC and DC power cords in the best position to avoid accidental damage by movable vehicle parts, i.e. hoods, doors, or moving engine parts (fan blades, belts, or pulleys).
3. Check the polarity of the battery posts. If the positive (pos, p, +) post is connected to the vehicle chassis, then the vehicle has a positive ground system. If the negative (neg, n, -) post is connected to the vehicle chassis, then the vehicle has a negative ground system. Negative ground systems are the most common.
4. For negative ground systems, connect the positive (red) alligator clip, or ring terminal to the positive battery post. Then connect the negative (black) alligator clip, or ring terminal to the vehicle chassis. Do not make the negative charger clip or ring connection to the carburetor, fuel lines, or thin, sheet metal parts. Make that connection to the engine block or a heavy gauge metal part of the frame.
5. For positive ground systems, connect the negative (black) alligator clip, or ring terminal to the negative battery post. Then connect the positive (red) alligator clip, or ring terminal to the vehicle chassis. Do not make the positive charger clip or ring connection to the carburetor, fuel lines, or thin, sheet metal parts. Make that connection to the engine block or a heavy gauge metal part of the frame.
6. Connect the AC power plug to the electrical outlet.
ADDITIONAL CHARGER INFORMATION
AUTOMATIC CHARGING AND BATTERY STATUS MONITORING: The Battery Tender® Junior and Plus Chargers are completely automatic and may be left connected to both AC power and to the battery that it is charging for long periods of time. However, it is prudent to periodically check both the battery and the charger for normal operation during these extended charging periods.
The charger output power, voltage, and current all depend on the condition of the battery that is being charged. Battery Tender® Junior and Plus Chargers have status lights that indicate the operating mode of the charger, and the condition of the battery that is connected to the charger.
The chargers operate in one of the 3 primary charge modes: the bulk mode (full charge power, constant current, increasing battery voltage, battery is 0% to 75% or 80% charged), the absorption mode (high constant voltage, decreasing current, battery is 75% to 100% charged), or the storage/float maintenance mode (low constant voltage, minimal charge current, battery is fully charged, typically 100% to 103%).
When the battery is fully charged, the green status indicator light will turn on and the charger will switch to a storage/maintenance charge mode. Battery Tender® Junior and Plus Chargers will automatically monitor and maintain the battery at full charge.
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SPECIAL FEATURES: The Battery Tender ® Junior and Plus
Chargers have the following special features:
SPARKPROOF: The battery charger DC output leads, either ring
terminals or alligator clips must be connected to a battery before an output
voltage is developed by the battery charger.
SHORT CIRCUIT PROTECTION: The battery charger can sustain a
short circuit connection directly across its DC output terminals indefinitely
without any risk of either electric shock or excessive heat.
REVERSE POLARITY PROTECTION: The battery charger is
protected internally against any damage due to the DC output leads being
connected to the opposite polarity battery post. No damage will result to either
the battery or the battery charger.
TEMPERATURE COMPENSATION (BT PLUS Only): The output
voltage is compensated at -3.5mV/ °C/Cell. This increases the output voltage
in cold climates to keep the battery from being undercharged and, more
importantly, reduces the voltage in high temperature climates to protect the
battery from overcharge.
TIME REQUIRED TO CHARGE A BATTERY:
The Battery Tender® Junior charges at a rate of 0.75 Amps (0.75 Amp-Hours per hour). The Battery Tender® Plus charges at a rate of 1.25 Amps (1.25 Amp-Hours per hour). Therefore, a fully discharged 15 Amp-Hour battery will take approximately 16 hours or 9.6 hours respectively, to recharge to 80% capacity with a Battery Tender® Junior or a Plus. Some large automotive or marine, deep cycle type batteries may take several days to fully recharge.
WORKING WITH A DEAD BATTERY OR A BATTERY WITH A VERY LOW VOLTAGE:
If you try to charge a dead battery having a voltage below 3 Volts, the BATTERY TENDER® CHARGERS will not start to charge because an internal safety circuit prevents the battery chargers from generating any DC output voltage.
NOTE:
If a 12 Volt, Lead-Acid battery has an output voltage of less than 9 volts when it is at rest, when it is neither being charged nor supplying electrical current to an external load, there is a good chance that the battery is defective. As a frame of reference, a fully charged 12-Volt, Lead-Acid battery will have a rest-state, no-load voltage of approximately 12.9 volts. A fully discharged 12-Volt, Lead-Acid battery will have a rest-state, no-load voltage of approximately 11.4 volts. That means that a voltage change of only 1.5 volts represents the full range of charge 0% to 100% on a 12-Volt, Lead-Acid battery. Depending on the manufacturer, and the age of the battery, the specific voltages will vary by a few tenths of a volt, but the 1.5-volt range will still be a good indicator of the battery charge %.
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STATUS INDICATOR LIGHTS: The following describes the indicator light operation: Note that the BT JUNIOR has a single light that will shine either RED or GREEN, while the BT PLUS has two separate lights, one RED and one GREEN.
> NEITHER THE RED OR GREEN LIGHT TURN ON - This is an abnormal condition and most likely indicates that the charger is not properly connected to the AC power.
> RED LIGHT FLASHING - The red light flashing indicates that the battery charger has AC power available and that the microprocessor is functioning properly. If the red light continues to flash, then either the battery voltage is too low (less than 3 volts) or the output alligator clips or accessory ring terminals are not connected correctly.
> RED LIGHT ON STEADY - Whenever the red light is on steady, a battery is connected properly and the charger is charging the battery. The red light will remain on until the charger completes the charging stage.
> GREEN LIGHT FLASHING - When the green light is flashing, the battery is greater than 80% charged. For BT Plus models the red light will also be on steady. (Note: Does not apply to the 8V Plus or the 6V Junior).
> GREEN LIGHT ON STEADY - When the green light stops flashing and burns steady, the charge is complete and the battery can be returned to service if necessary.
> ALTERNATING RED & GREEN LIGHTS FLASHING (PLUS) or SINGLE LIGHT ORANGE (JUNIOR) - This is abnormal and most likely indicates either that the battery is sulfated or that there is a poor electrical connection between the charger DC output and the battery posts. For the BT Plus models it may indicate a reverse polarity connection on the DC output cables (the battery is hooked up backwards).
TROUBLESHOOTING CHECK LIST:
1 NEITHER OF THE CHARGER LIGHTS TURN ON AFTER THE AC POWER PLUG IS CONNECTED TO THE AC ELECTRICAL OUTLET: Check the charger AC power plug connection at the AC electrical outlet. Verify that the AC electrical outlet is functioning properly by plugging in another appliance or a voltmeter.
2. THE CHARGER GREEN LIGHT GOES ON IMMEDIATELY WHEN AC POWER IS APPLIED TO THE CHARGER: The charger connections at the battery may be intermittent, the battery may be defective, or the battery might already be fully charged.
3. CHARGER IS CHARGING BUT THE GREEN LIGHT DOES NOT TURN ON IN A REASONABLE AMOUNT OF TIME: The battery may be large and requires more time to fully charge than originally expected, there may be another appliance drawing electric power from the battery while it is charging, or the battery may be defective. Also, a newly purchased battery may not be fully charged and may take longer to charge initially.
4 THE RED LIGHT COMES ON AGAIN AFTER THE GREEN LIGHT CAME ON. There may be another appliance drawing electric power from the battery causing its voltage to drop below the reset level. The battery charger then goes back into full charge mode. Also, the charger connections at the battery may be intermittent or the battery may be defective.
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SPECIFICATION SUMMARY:
Technical Specifications (BT Plus & BTJR Models)
AC Input Voltage, Frequency 120 VAC, 60 Hz
AC Input Current (Maximum) 0.5 or 0.4 Amps

DC Output Voltage (Nominal) 12 , 8, & 6 or 12 & 6 Volts
DC Output Current (Maximum) 1.25 or 0.75 Amps
Specific Charger Output Voltage & Current Amplitudes throughout the entire charge algorithm, including absorption and float maintenance, are consistent with the optimum charging recommendations of major lead-acid battery manufacturers.
Maximum Operating Temperature 50 °C Typical
Charger Case Dimensions: BT Junior: 3.313 in (85 mm) L x 2.313 in (59 mm) W x 1.875 in (48 mm) H. BT Plus: 4.875 in (124 mm) L x 3.25(83 mm) W x 2.875 in (73 mm) H. Note: When sizing the space available for the 1.25 Amp battery charger, do not forget to allow additional length for safe bending of the strain relief on AC or DC power cords, typically 2 in (50.8 mm).
Shipping Weight: with Accessories: BT Junior: Approx. 2.3 lbs (1.1 kg) BT Plus: Approx. 3.0 lbs (1.4 kg)
Declaration of Conformity: These battery charger products are designed to meet or exceed the specific requirements of UL-1236. See UL File E206016.
Design Conformance & Revision: All charger products are 100% inspected and electrically tested prior to shipment. All battery charger designs are proprietary and subject to change without notice. Manufacturer makes no specific claims nor does it either make or imply any specific guarantee or warranty with respect to either the physical configuration or performance of any of the battery charger products listed herein, including suitability for purpose or merchantability.
DELTRAN CORPORATION 801 International Speedway Blvd.
DeLand, Florida 32724
Phone 386-736-7900 FAX 386-736-0379
www.batterytender.com
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GE, the second-largest U.S. company said it has invested $20 million in A123 Systems, a technology company based outside Boston that is developing high-capacity, lithium ion battery hybrid car batteries for electric and hybrid cars.

GE also said it would open its research center in Niskayuna, New York to help develop lithium ion battery hybrid car batteries for electric autos.

Hybrid cars use both a traditional internal combustion engine and an electric motor, while plug-in electric cars draw their power from the grid and store it in batteries.

“Our work with A123 and Think taps GE’s unique combination of venture capital, engineering, process and commercial expertise to help burgeoning, next-generation technology companies bring their innovative products to market,” said Kevin Walsh, managing director at GE Energy Financial Services.

If you are going to make a pandora battery for your PSP you need to make sure you have everything here is a list of what you will need.

Materials need to make pandora hardware battery

A psp (1)
A psp battery (2)
A memory stick pro duo with 512MB or more, NO LESS (1)
A mini USB or Memory Card Reader (1)
A computer with an internet connection (1)
A knife/exacto knife (1)
A needle, safety pin, or tooth pick you get the point (LOL), etc (1)

There has been many fun and exicting toys powered by battiers over the years, the 1960s battery operated japan toy robot you can say was the farther of them all. The Very High Quality tin robot made in Japan. Offered mechanical walking action with moving arms and pistons that thrust up and down in it’s chest as it operates. They are hard to find in good quaily now days but they are out there.

Sales of rechargeable batteries posted double-digit gains last year, and to keep pace with that surge, suppliers are creating more powerful and sophisticated chargers and batteries that are due out soon or in stores already.

Delkin recently unveiled its Dual Universal Battery Charger, a two-sided unit with separate charging plates for different-sized batteries. The unit is designed for such high-drain devices as digital cameras and for people who use more than one camera. “Different camera models seldom use the same battery, and that forces photographers to carry an array of chargers,” said Delkin battery product manager Anna Lopez.

Tekkon debuted its myPower Go charger that comes with 10 adapters and can charge a wide array of cell phones from Samsung to Sanyo. It joins the Energizer Energi to Go Portable Power for iPod that debuted last November, which is powered by two lithium AA batteries and provides 46 hours of music playback on an iPod Nano.

For families with multiple portable devices, supplier Lenmar unveiled a prototype called the Power Puck at the Photo Marketing Association show. The black, puck-shaped unit can charge up to six devices at a time and is due to arrive in stores in late 2008.

Lenmar’s Mach 1 Lightning charger can charge two AA batteries in as little as eight minutes and up to four AA or AAA batteries in 15 minutes.

While standard battery sales have been relatively flat, sales of rechargeable batteries have been rising fast. The NPD Group estimated rechargeable-battery sales increased 14 percent in 2007 to 15.5 million units and generated $170.7 million in revenue.

And that demand is producing new batteries that last longer and are less expensive. The price erosion was apparent last year when total rechargeable battery revenues increased just 5 percent despite a 14 percent jump in unit sales.

JOBO Enterprises has developed a battery line designed for such high-drain devices as digital cameras and camcorders. Its Energy Premium line comes with color-coded packaging that makes it easy for consumers to e find the right replacement battery for their camera or camcorder. The batteries can be charged up to 500 times and include microchips to prevent them from overheating.

Energizer, which reported a 22 percent increase in sales of rechargeable batteries last quarter, is targeting the same market with its line of AA NiMH batteries that last four times longer than typical AA batteries, and they can be charged hundreds of times and hold their charge for up to six months.

And Sony is preparing to release its line of “low self-discharge” batteries that hold a charge longer than existing batteries. Its Cycle Energy Blue Rechargeable Batteries are pre-charged and can be recharged up to 1,000 times.

DOUG DESJARDINS