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Posts Tagged ‘lithium-ion’

Tool battery teardowns: Craftsman 19.2V and Ridgid 12V

Monday, September 10th, 2018

Russell Graves did teardown of a Craftsman 19.2V DieHard battery and a Ridgid 12V battery: It's time for more tool battery teardowns!  This week, I've got a Craftsman 19.2V DieHard battery, and a cute little Ridgid 12V battery.  They're both lithium, and I'm going to dig into both of them, because...

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Posted in Teardowns | No Comments »

A 5c lithium ion battery charger

Monday, August 25th, 2014

Nerd Ralph writes: As various sites explain, lithium-ion rechargeable batteries should be charged to 4.2 volts. USB ports provide 5V, so all I needed was a way to drop 5V down to 4.2 or less. Standard diodes have a voltage drop of 0.6 to 1.0 volts, so I pulled up...

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Posted in how-to | 40 Comments »

App note: Lithium-Ion battery recycling made easy

Saturday, October 12th, 2013

An app note from Maxim: Lithium-Ion battery recycling made easy This application note describes how to recycle lithium-ion (Li+) batteries from older devices for use in other electronic devices, such as toys. This can all be done without the need for a microcontroller (or the required software). One challenge is that...

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Posted in app notes | 1 Comment »

BatLev, a LiFePo4 cell balancer

Thursday, June 6th, 2013

Blarson posted his project the BatLev, a LiFePo4 cell balancer  in the project log forum: Lithium Feric Phosphate cells are a lower engergy density variety of lithium-ion cells that don't have the fire hazard and short life problems of the more common li-ion cells. They are popular for electric vehicles...

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Posted in project logs | 1 Comment »

App note: USB HID lithium-ion battery charging via USB with ATmega16/32U4

Saturday, March 2nd, 2013

This app note discusses how to use the Atmel® EVK527 evaluation kit to charge Lithium-Ion (Li-Ion) batteries using USB connection as power supply: This document (PDF!) describes an application running on the Atmel EVK527 evaluation kit. The EVK527 is dedicated to the Atmel ATmega16/32U4. The USB offers a 5V power...

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Recent Comments

  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
  • Jerome: I need a new BusPirate for the Fablab ;) Many thanks!
  • Max: Seems like an unexpectedly violent way to remove the chip indeed. A hot air station should of course do the job just fine, but in...
  • jose: Part removal described here is pure butchery, the cheapest hot air station will do a fast and clean job removing the QFP, heat air to...
  • Cody: Yes please