All posts in the 'Battery Charger' Category
Posted on 08 Sep 2008
This is a precision battery discharger for 8.4V 7-cell Ni-Cad or Ni-MH batteries. The project made a cheap, reliable discharger circuit with an easy visual indication of the batteryโs state (discharging or discharged) with less than 10$ of parts. Most parts can be found around the house or taken from broken electronic equipment - or at worst, purchased from Radio Shack.[more]
Posted on 04 Sep 2008
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The COMBATT is a NiCad discharger.It is quite simple in its operation, your NiCad pack is simply discharged through a large 50 watt resistor. As the NiCad discharges, your computer ’samples’ the voltage of the battery pack on load, and marks a series of red points on your screen, i.e. it draws a line. At the point when the pack voltage just dips below 1 volt per cell (4 volts for 4 cells, 8 volts for 8 cells and so on) your computer will automatically stop the discharge of the pack.[more]
Posted on 04 Sep 2008
This is a Fast, smart NiCD/NiMh battery charger based on MAX712/MAX713 which is a fast charge controllers.The only difference between them is the battery-fully-charged sensing method. The MAX713 is designed for NiCd batteries, while the 712 is for NiMh batteries.[more]
Posted on 04 Sep 2008
This is a universal Lithium Ion battery charger with a Smart Battery interface based on an Atmel ATMEGA8 microcontroller using GCC ver. 3.2. The charging parameters are established using one of three methods: if a Smart Battery is detected, the settings from the battery are used. If the “Custom” switch is selected then the settings are set using on-board dip switches and a variable resistor. If not then predefined sets of parameters are selected based on other dip switch positions.[more]
Posted on 04 Sep 2008
This is a charger circuit for both NiCd and NiMh Batteries.When the Battery voltage is low it is charged with the usual constant current source in the normal way. But when the battery voltage increases, the charging current will become pulsed. A completly fully charged battery only requires short flashes to maintain its charge and terminal voltage.[more]