Replacement Lithium battery.Black Diamond says:A replacement battery for rechargeable or dual fuel Black Diamond headlamps. Currently compatible with ReVolt 350 and Sprinter 500 headlamps.Our VerdictHaving a spare battery fully charged and ready-to-go is a lifesaver on a long trip. Get an authentic Black Diamond battery for optimal performance and compatibility.- Reviewed by Ultralight Outdoor GearFeaturesReplacement battery onlyCharger not includedSpecificationsWeight:RechargeableLithium-ion Battery

Replacement Lithium battery.Black Diamond says:A replacement battery for rechargeable or dual fuel Black Diamond headlamps. Currently compatible with ReVolt 350 and Sprinter 500 headlamps.Our VerdictHavi