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R049-8 36V 48V 52V 20Ah 25Ah BMS30A 21700 5000mAh Cells Polly Electric Bike Battery fit for 0-1000W 250W 350W 500W 750W 800W 1000W Watt e-Bike Motor with 3A Charger
With USB port can charge cell phone and bluetooth speaker. Waterproof IP65 and sold aluminium case, stronger then normal plastic case. With LED tail light keep safe riding at night. Lighted battery LED power indicator, inform you battery power anytime. Lock with keys securely locks the mount on bike frame. With battery handle, easy to install and remove. 
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