I used the charger to charge the 2 year old batteries in my F250 which barely started the engine in cold weather - the Batteries have been working like new ever since. So the charger works exactly as advertised and it's nice that no fire causing Ctek reviews were found like the cheaper brand you'll find here. However, the cables are quite fragile and should power a cheap household appliance, not a tool that works in harsh environments. Overall it's a good value - it saved me $400 on new batteries and didn't burn the house down.
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