Apexium INR 21700 4000mAh 3.6V Lithium-Ion Battery
High Working Voltage — Supply to various high power electronic devices. Apexium INR Cells can provide stable voltage for your device effectively to avoid the risk.
High Energy Density — 4000mAh makes more energy density than normal 21700 cells. Much more powerful performance.
Long Life Cycle — Available to make long cycle life battery packs, which extends the cycle of life over 1000 times.
Low Self-Discharge — Self-discharge range only at 5%~9% which is much more helpful to prevent power loss.