Kastar 18650 (2-PACK) LGDBHE41865 High Drain (35A Max. current load) Lithium-ion Battery, HE4 3.6V 2500mAh Rechargeable Flat Top for Electric Tools, Toys, LED Flashlights and Torch ect. High capacity - HE4 High Drain (35A Max. current load) 2500mAh high capicity quality will provide ultra strong power for your devices to performance well and operate longer. 800 Cycles - Kastar add mix-protection additive to the cathode of batteries, protect the material from degradation in the progress of charge and discharge, extend lifespan up to 800 cycles. Low self-discharge - Embedded seal structure expand the space of crystal lattice, make more room for hydrogen, so Kastar batteries will holds long time benefit from its concentration to low self-discharge project. Safety assurance - Lithium-ion eco-friendly cell, doesn't contain Hg/Cd/Pb, makes no pollution to the environment, and using High Quality steel shell which can protect the battery against explosion due to overpressure. Long warranty - Kastar batteries include 30-day money back and 18-month manufacturer warranty.