The old Charles marine brand charger never boiled any water out period.

After 3 months it boiled the water out of the battery , Must be defective?

This charger is very durable, even when cruising across rough waters.

I have had the same issue with this product boiling all the water out of the batteries and then it keeps charging until the batteries are ruined.

I filled all the batteries with fresh distilled water and unplugged the charger and plugged it back in.

Otherwise, the water could leak out of the battery during charging.

Sometimes, the old charger would "boil" water out of some of the batteries

This charger is boiling all the water out of my batteries.

Interestingly the regular cranking battery looks good no water missing.

works as it should, seems well built and heavy.

Works as it should and customer service is among the best I have every talked to.

It works as it should as of this time and is simple to install..

it t keeps my batteries charged and ready for action.