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1S 2S 3S CELL 1A NiMH Rechargeable Battery Smart Charger Module Charging voltage 1.5V 3V 4.5V 5V Input 3.7V 6V 5V 4.2V|Battery Accessories| - AliExpress
What happens when a NiMH battery is overcharged to 1.375 v? It seems to be working okay so far. - Quora
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