KVC-21 Mobile Vehicle Charger 12 V (Tri-chemistry) Points forts Tri-Chemistry. Recharges battery models:-- KNB-31A- KNB-32N- KNB-33L- KNB-47L- KNB-48L- KNB-54N- KNB-58LEX- KNB-64LEX Accessory Features Input Voltage12 - 35 Volts DC DimensionsW x H x D - 68 x 105 x 37 mm