[LITHIUM BATTERY TECHNOLOGY] CT-ENERGY LIR1632 lithium rechargeable button battery has high leak proof and no memory effect.Low self-discharge rate up to 3% per month. [HIGH CAPACITY] LIR1632 rechargeable coin battery with 3.7V 30mAh capacity supplying constant current and voltage.It can be recharged 300+ times cycle. Save your money! [FAST CHARGING] The LIR1632 rechargeable lithium coin cells can be finished charge in 1 hour by CT-ENERGY USB LITHIUM COIN BATTERY CHARGER (purchase separately) which has overcharging protection. [HIGH WORKING CURRENT] This LIR1632 rechargeable battery can replace 3V CR1632 battery if your electronic device in high working current at 30mA and working voltage accept 3.0~3.7V. [MERCURY FREE] LIR1632 rechargeable batteries are applying to Key Fob,Car remote controls,Tile key finder,door and window sensor,toys,thermometers,tire pressure monitor,wireless mouse,bluetooth selfie stick,electronic dictionary,scales,etc. Lir1632 rechargeable lithium-ion button battery size: D16xH3.2mm voltage: 3.70V capacity: 30mAh working temp.: -20~-60 long cycle life under the condition of standard discharge, the cycle life of the lir1632 coin battery can be 300+ times cycle while with capacity less 80%.low self-discharge rate less 3% per month.