Customized Rechargeable 3.7V Polymer Battery 501220 80mAh Li Lithium Lipo Battery offers high cycle life up to 500 cycles, customized sizes, and built-in protection against overcharge, over-discharge, and short circuits. Ideal for small devices like AR glasses, smart wearables, smartwatches, and home appliances, this Wiliyoung Lipo battery ensures reliable performance with certifications including IEC62133, UN38.3, and CE. Featuring LiCoO2 cathode material, it delivers stable power in a lightweight 10g design for diverse consumer electronics and industrial applications.More