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4400mah Rechargeable Battery Pack For Magicshine Bicycle Led Light/lamp Mj-870/mj-808/mj-808e/ct-808/mj-6008/mj-828/mj-6002 - Digital Batteries - AliExpress
Flashlight MagicShine LED Bike Light Li-ion Battery 7.4V 4400mAh 2S2PX HT | eBay