When your radio controlled device batteries are drained, you’ve got no better option than to call on BattMan II. This device is packed full of features for cycling and charging various types of batteries. It is computer controlled via your parallel port (yeah, remember those?) and has companion software that allows you all kinds of control and data.
The writeup is rather extensive and includes schematics so you could build your own. There’s also a step by step breakdown of how each section functions as well as an explanation of each different charging method. Great work [Stefan]
if you just want a peak at the lengthy feature list, keep reading.
The hardware feature list:
- 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, Vista, or Windows 7).††
- Operating software, complete with source code, is available to download.