NiMH Battery Charger Based on AVR

The simple project is built around an ATmega8 that utilizes PWM and ADC to control the charging current of NiMH battery cells.

Charger Device for Lithium Polymer (LiPo) Battery

The project is a single PCB where 3 LiPo battery chargers are combined with an output voltage of 4.2V for each charger.

Balancer Circuit for Lithium Polymer (LiPo) Cell

The project was designed to produce a balancer for LiPo cells in order to prevent an excessive difference between stored charges.

Battery-Powered Amplifier Known as Ruby

A simple battery powered power amplifier with adjustable gain control which is built around LM386 low voltage audio power amplifier IC.

Battery Manager with Computer Control

The project is intended for typical rechargeable batteries used by R/C devices, various consumer product batteries, and electronics hobbyists.

NiCad Battery Discharger Known as COMBATT

The device utilizes a large 50W resistor to be used for discharging NiCad battery pack.