Charge current of 600mA makes this ideal for small sealed lead-acid batteries but is also useful as a slow (trickle) charger for larger batteries. Switch to select between 2V, 6V & 12V battery types. LEDs show charge process & when complete and wrong polarity. Supplied with the following. Heavy duty Crocodile clip lead Specifications: Output Voltage: 2V, 6V & 12V Suitable for: 2V, 6V & 12V Lead Batteries (SLA, VLRA) Weight: 130g Dimensions: 82 x 56 x 50mm (casing only) Crocodile clips max opening: approx 20mm