Graupner Polaron EX Charger, Blue Full color 3" TFT LCD touch display for programming charge parameters, monitoring charge progress Accepts a range of DC power inputs: 11-28 V DC 2 X max 400 W channels (.1--20A) @ 24V DC 1-7 cell LiIon/LiPo with balancing board connectors, 1-14 cell NiMH/NiCd, 1-12 cell Pb/acid Dual cooling fans reduce temperature during charge and discharge