Universal double quick chargers: For parallel charging of 2 Li-Power or LiHD slide-on battery packs (12 V ��� 36 V) Patented ���AIR COOLED��� charging technology: battery pack cooling during charging for significantly reduced charging times Processor-controlled charging management for gentle charging and maximum number of charging cycles Two USB connections with 1.5 A charging current each 3-year warranty on all…