Electronic Project : Computer Controlled Battery Manager

BattMan II is a computer controlled battery manager, intended for typical rechargeable batteries used by R/C and electronics hobbyists, as well as various consumer product batteries.

BattMan II has the following capabilities:

• Works with Nickel-Cadmium (NiCd), Nickel-Metal-Hydride (NiMH), Lithium-Ion (Li-Ion), Lithium-Polymer (LiPo), Lithium-Nano-Phosphate (LiNP), and Lead-Acid (Pb-Acid) batteries of 1.2 to 14.7 Volts.†
• Discharges batteries to measure capacity at rates of 130mA to 2A.
• Charges at rates of 130mA to 1.3A.†
• Automatically performs repeated discharge/charge cycles to break in new batteries, or erase NiCd voltage depression in old ones.
• Measures internal resistance.
• Monitors self-discharge.
• Real time graphical display lets you see problems like mismatched cells.
• Keeps a log of all operations performed, which can be imported into any spreadsheet program.
• Saves graphs of charge, discharge, auto-cycle, and monitor operations.
• Connects via parallel port to any PC running Microsoft Windows (95, 98, ME, 2000, XP, or Vista).††
• Operating software, complete with source code, is available to download.

Download schematic and software

Electronic Circuit Project, Battery manager (src)

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