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14 Apr 2011

On November 5, 2010 the press release from the NEC Corporation announced that they developed an improved organic radical battery for practical use. The first information about this organic radical battery (ORB) is from 5 years ago, when the prototype was thicker and had a lower output.

An organic radical battery is actually an extremely flexible, small sized battery that also has a short recharging time. In the belly of the “beast” we find a gel, an organic radical called polymer that is saturated with electrolytes. The battery also has a higher density then the Li-Ion type. Also the organic radical battery is ECO friendly and it’s not flammable or explosive. [via]

Flexible Organic Radical Battery by NEC – [Link]

14 Apr 2011

Vane writes:

Today i created pcb for Lithium Ion / Lithium Polymer USB Battery Charger with MAX1811, and designed with eagle pcb software.

About Max1811

The MAX1811 is a single-cell lithium-ion (Li+) battery charger that can be powered directly from a USB port or from an external supply up to 6.5V. It has a 0.5% overall battery regulation voltage accuracy to allow maximum utilization of the battery capacity.

The charger uses an internal FET to deliver up to 500mA charging current to the battery. The device can be configured for either a 4.1V or 4.2V battery. The MAX1811 is available in a small 1.4W thermally enhanced 8-pin SO package.

PCB for USB Charger with MAX1811 – [Link]


12 Apr 2011

EngineeringShock writes:

This circuit acts as a never-dying, forever rechargeable battery. If treated properly and with respect, it will live longer than you do! That’s right! You will die before this variable battery does! Eerie, eh? The circuit employs about $90 worth of circuitry, but it sure beats buying batteries. I use this circuit every single day when I get home from work to listen to music. Depending on your input charging method (DC, solar, etc), charging can take only minutes. With this, I can listen to music out of my computer speakers at high volume for about two hours before having to re-charge. Use it to charge your cell phone. Use it to power your radio! Use it as a portable power supply! Wire it up to a flash light, or use it to power your halloween costume! The possiblities are endless! I am selling this in kit form! See the last page of this instructable for details.

The Forever Rechargeable VARIABLE Super Capacitor Battery !!! – [Link]

12 Apr 2011

BrianH writes:

Do you have a pile of AA rechargeable batteries in your drawer? Some are old, some are new, but which sets would you bring with your camera on your next trip, and which ones are past their useful life? I like using rechargeable batteries, but I’m certain that some of them are not living up to the stated capacity on the label.

Rechargeable Battery Capacity Tester – [Link]

12 Apr 2011

JoshuaZimmerman writes:

When I got into electrical circuits and solar power the first thing I wanted to do was build a little solar powered battery charger. Only I had a heck of a time trying to find a simple and strait forward guide to doing this.

$4 Solar Battery Charger – [Link]

9 Apr 2011

coolcircuit.com writes:

This project builds a simple automatic battery discharge analyzer. It can be used to measure the discharge characteristics of the batteries. The output data can be expressed into a graph with a spreadsheet by sending data to PC via RS232.

Battery Discharge Analyzer – [Link]

6 Apr 2011

tehnikservice.net writes:

Laptop batteries can be repaired but such work only makes economical sense for smaller operators.

The success rate varies with battery type.

One must remember that the ʽsmartʼ battery consists of two parts, the chemical cells and the digital circuit.

In some cases, the chemical part can be fully restored but the fuel gauge may become inaccurate or other data may get corrupted.

Repairing Laptop Battery – [Link]

5 Apr 2011

seniorhigh writes:

Okay, so I’ve looked around for an idea for an instructable. And I found one that I want to do my own rendition of, the penny battery. So this idea is not completely original, I’m not claiming it as mine. I’m just using the materials and methods that I think will be the most effective. My hope is to power and LED light or a small fan if possible. But if I make the led die, then I have sufficiently surpassed my expectations. Let’s get started.

Battery from Pennies – [Link]

31 Mar 2011

The bq28400 provides battery capacity and safety monitoring optimized specifically for 2-cell Li-Ion and Li-Pol applications. This single-chip fuel gauge and analog front end (AFE) provide a first level of protection against all cell fault conditions: over/undervoltage, overcurrent, temperature, and imbalance between cells.

2-Cell Lithium-Ion Fuel Gauge and Protector – [Link]

25 Mar 2011

Of all the criticisms of electric vehicles, probably the most commonly-heard is that their batteries take too long to recharge — after all, limited range wouldn’t be such a big deal if the cars could be juiced up while out and about, in just a few minutes. Well, while no one is promising anything, new batteries developed at the University of Illinois, Urbana-Champaign do indeed look like they might be a step very much in the right direction. They are said to offer all the advantages of capacitors and batteries, in one unit. [via]

Complete battery recharging within minutes – [Link]





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