Strion Flashlight Charger/Holder is for use with Streamlight's Strion flashlights. This clamp-style charge holder has a digital control circuit preventing over charge. Lithium Ion with on-board safety control circuit, 3.63 V, 2600 mAh, rechargeable up to 1000 times. Clamp style charge holder with digital control circuit that prevents over charge. Fully recharges battery in 3.5 hr. Charge base LED indication, LED steady - charging, LED blinking - charged.