EWT lithium-ion rechargeable battery with high energy density, high capacity, light weight and high power battery types include cylinders, diamond button series. Single cell capacity range is 50-15000 mAh, and the battery thickness is 1mm-20mm. All battery with reference to UL and CE standards for production, reliable quality, by extrusion, overcharge, over discharge, blow, short circuit, puncture and incineration test methods to test the battery. EWT batteries even in a variety of abuse can still be used safely.