Tool battery teardowns: Craftsman 19.2V and Ridgid 12V

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 that’s what I do with […]

App note: Lithium-Ion battery recycling made easy

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 the battery charger in these […]

BatLev, a LiFePo4 cell balancer

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 and are gradually making their […]

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

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 supply on the VBUS pin. […]