Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: stay far far away

Have used this charger for A year to charge my boat batteries. Never completes A cycle without having to un-plug and restart. Charged battery overnite, and found battery was boiling. Had to replace. Bought new model(walmart) and returned old in same box, and still having same problems.My life depends on dependable power offshore. This charger is garbage, going to sell at fleamarket and get real operational charger.