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18650 battery cell
Runtime: 1 hour+ on xml t6 C8 2.8A flashlight(high mode)
Most of the 2400mah batteries in market,only 30minute+ run time,and is not suitable for high current output flashlights.
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Ultrafire Battery may explode if charging or discharging improperly. User must have knowledge of how to charge and discharge Ultrafire battery before making Ultrafire Battery Pack. Strongly suggest you using our smart Ultrafire battery charger to recharge the battery module. Never use DC adapter to charge this battery pack. We are NOT responsible for any damage that is caused by the misuse of the Ultrafire Battery.
WARNING:The voltgae of full chargeand empty condition is 4.2Vand 2.75V.RespectlvelyIt is dangerous to heat,Throwinginto fire or charging reversely