Streamlight SL-B34 Lithium Battery Features The Streamlight SL-B34 Lithium Battery delivers 3.6V and 3500mAh of rechargeable power through a USB-C charging port eliminating the need for a separate external charger or disposable batteries. A full charge takes approximately five hours and the battery s charge status indicator glows red during charging and switches to green once complete giving the user a simple visual cue without guesswork. This protected lithium-ion chemistry is specifically engineered to fit select Streamlight flashlights that take the SL-B34 battery pack including the MegaStream series of lights. Carrying a spare charged SL-B34 means a flashlight user can swap in fresh power in seconds rather than waiting through a recharge cycle. An integrated safety circuit built into the battery pack protects against over discharge and overcharge conditions safeguarding both the battery s long-term capacity and the host flashlight s electronics. This protection circuit makes the SL-B34 a safer choice than generic aftermarket batteries that lack built-in safeguards. Sold individually as a single battery this pack gives Streamlight owners an affordable way to add backup power to their rotation. For anyone relying on a compatible Streamlight flashlight for professional duty or everyday carry use keeping a spare SL-B34 Lithium Battery on hand ensures the light is never caught without power. Streamlight SL-B34 Lithium Battery Specifications Manufacturer: Streamlight Model: SL-B34 Lithium Battery Type: Accessory-Lights Capacity: 3500mAh Voltage: 3.6V Charge Time: 5 Hours Charge Port: USB-C Weight: 0.15 lbs. Available At: GrabAGun