The circuit utilizes the MAX773 current-mode controller and the MAX471 current-sense amplifier for charging lead acid batteries.
The project illustrates a constant current and automatic charge termination when the total voltage for all cells reach the setting voltage as it produces a NiCd/NiMH charger.
The accugraph project aims to discharge NiCd/NiMh/LiPo rechargeable batteries and collects data in order to keep the rechargeable batteries in good shape since they are quite expensive.
The intelligent charger was designed for high current and rapid charge that is suitable for automatically charging wide range of batteries and applications such as model racing cars and cordless power tools.
The project has a rating of 24Wh as the energy stored using 11 NiMh AA cells to be used for charging a laptop, satellite phone, camera battery, and mobile phones.
The project makes the USB port a convenient source of power for devices such as battery charger for a pair of AA Nickel Metal Hydride (NiMH) and Nickel Cadmium (NiCd) cells.
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