Flashpoint Blast Pack Replacement Battery (Li-polymer, 4500mAh) Flashpoint Lithium Battery Pack - Flashpoint 1 Year Warranty Flashpoint Blast Pack Replacement Battery Module. Interchangeable Lithium battery modules for nonstop shooting. Lightweight portability and super value. Stable, memory free, interchangeable Lithium 4500m Ah battery modules snap in with up to 1800 full power energy reserve.