Charge current of 1000mA makes this ideal for 12v sealed lead-acid batteries but is also useful as a slow (tricKLe) charger for larger batteries. LEDs show charge process & when complete and wrong polarity. High spec charger for 12V Lad-Acid batteries: Charges 12V sealed lead-acid batteries (selected by switch) 1000mA output. Short Circuit Protection Overload Protection Over Temperature Protection Reverse Polarity Protection Supplied with the following. Heavy duty Crocodile clip lead Specifications: Output Voltage: 12V Suitable for: 12V Lead Batteries (SLA, VLRA) Weight: 130g Dimensions: 82 x 56 x 50mm (casing only) Crocodile clips max opening: approx 20mm