I have now used this on Three "thought to be dead" batteries it successfully revived two. So IMHO has already paid off. Small enough to fit in my tool box drawer, long connection leads, Recommended for someone that likes to set it and forget it lol. My confidence is high in recommending this product.
Great deal on awesome product. Have about 6 optimate chargers now. Four of the 3’s for all my mowers and power sports toys and two 6 ampmatics for my vehicles.
These chargers are rated as one of the best on the market to keep batteries at peak performance. One of the few 'trickle' chargers that won't ruin a battery over the long term........