Kinetik HC400 BLU 400W 12V High Current AGM Car Audio Battery Power Cell (BLU Series) Black Case with Blue Logo BLU Series 400 Watt Maximum Power Cell 12V 12V High Current Car Audio Power Cell Sealed absorbed glass mat (AGM) design Can be used as a replacement for your vehicles standard battery Can also be used as an additional battery to power your high-performance sound system Perfect for 400W car audio stereo systems