I have my batteries in the basement with my on-board charger on them to maintain the level of charge. My question is that the batteries look like they are maintenence free but I really can not tell and the sides do not say that they are. So do I try and open the tops with a screw driver or something to check the water level? If they are low what liquid do I put in, acid or just distilled water?? Thanks in advance!
Even a lot of the maintenance free batterys have tops that open. If they are low just add distilled water
If they have been dry for awhile then that prtion of the plate in the battery may go bad and won’t keep a chrge. Take it from one who knows. I had batteries that wouldn’t keep a charge for a while and I decided to look in the cells and found out they were halfe full. Filled them up with water and still did not hold a charge. Brought them to Batteries Plus and found out the cells (all) were half bad. New batteries. They said the best thing to do is to check them once a month for light usage and twice a month for heavy usage. Even no maintance batteries go dry. Isn’t that why they are called maintance free? I don’t get it. Aspirin and battery acid won’t bring them back either. Just have to get new ones. Usually last about 2-3 years heavy use. 1-2 years if you get the Mega Cycle. Have Everstarts now and we’ll see how they are next year after having them for 1 year. First thing I need to do is to get them out of the boat and into the house where they will be warmer. If they are outside and low on charge in this cold weather they will also go bad. You can tell if a battery has been frozen or overheated because it will be bulging. Not good. Can’t bring back from the dead either.
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