China 48V 20ah Rear Rack Lithium-Ion Battery 18650 Cells ...
1,- Water-resistant and firm ABS plastic casing. 2,- Built-in PCB protection. 3,- Prevent short circuit, over-current, over-heat, over-charge, over-discharge. 4,- The internal pack is stabilized by braces. 5,- Avoiding mechanical accidents caused by vibration. Advantages of Electric Bicycle Battery Pack : 1, High energy density
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