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Jul 21st, 2025 | | | | Joined: Mar 2010 Posts: 66 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2010 Posts: 66 | why does my 6 volt battery boil out the acid/water when i have it on a 6 volt maintainer that is at 1.5 amp I dont have the battery in the truck ,it does this over and over that now it must be all water in it I stoped charging now ,I had the caps on tight and loose and get the same thing the battery is a year and a half old | | | | | Joined: Aug 2005 Posts: 6,383 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,383 | A continuous charge will boil out the water. Low amperage only takes longer to do it UNLESS the maintainer has a chip in it to lower the charging rate and stop it all together when the battery is fully charged. If your charger is truly a maintainer it'll shut itself off to prevent your condition. I suspect you don't have a "maintainer" but just a trickle charger that never shuts off.
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| | | | | Joined: Aug 2009 Posts: 295 Shop Shark | | Shop Shark Joined: Aug 2009 Posts: 295 | A float can charge a battery but it will take some time. Float is generally designed to prevent battery from discharge. Done at a "slight" charge voltage ie 13.8 (12 V) and maybe a 0.25 amp. Current is kept low to keep both temp and evaporation ot minimum. A float of 1.5 A at 6.9 for a 6V sounds too high to me. Wont hurt anything as long as electrolyte kept at above cell top level.
Dan Bentler | | |
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