Streamlight | SL-B26 Lithium Battery

Streamlight built the SL‑B26 as a real, economical alternative to burning through disposable CR123A batteries in its rechargeable‑compatible lights -⁠- a protected 3.7V, 2600mAh lithium‑ion pack rated for up to 500 recharge cycles. An onboard safety circuit protects against overcharge and overdischarge, backed by a pressure vent and a PTC surge protector for genuine cell‑level protection, and an integrated USB‑C port with LED status lights means you don't need a separate charging cradle to top it off. At 1.7 ounces and built to drop into any Streamlight light designed to accept it, it's the battery that actually pays for itself if you shoot or train enough to notice the cost of CR123A cells.