The battery is nominally 18 V. The tool uses only 4 pins: A, B, D, and E. It does not connect to pin C which has a voltage on it. The charger also only uses 4 pins, but it uses pins: B, C, D, and E. It does not use A which I measured as the largest voltage. Thank you for any information you have on the pinout of these batteries. Click to expand…
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