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BT-C3400 Battery Charger Analyzer Li-ion NiMH AA AAA Car Adapter 18650* 26650
Brand: OPUS
$49.94 USD
Li-ion sizes: 10440, 14500, 14650, RCR123A (17340), 17500, 17670, 18350, 18500, 18650, 19670 (protected 18650), 25500, 26500, 26650. What happened??. Most likely one bad battery in the set. Now you can test those batteries for actual capacity.
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