BolidTec Milwaukee 48-11-2131 Replacement Battery Red Lithium 3200mAh USBA high-capacity lithium battery replacement compatible with Milwaukee Red Lithium USB batteries. The 3200mAh battery provides extended runtime for Milwaukee headlamps and flashlights, reducing downtime from frequent charging. Includes a dual charging station that can charge two batteries simultaneously with fast 2.1A USB charging. Built-in protection circuits guard against overcharge, overheating, overload, overcurrent, and short circuit for safe operation. LED indicators show charging status: red light while charging, green light when fully charged. Perfect replacement for Milwaukee model 48-11-2131 and works with various Milwaukee 4V USB lithium-powered poundsProductdimensions