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Old Aug 22, 2014, 01:25 PM
jrb's Avatar
Edina, MN, USA
Joined Oct 1999
11,556 Posts
Water consumption with Battery Minder

Havenít been using my deep cycles much; and keep them connected to my Battery Minder ( http://www.northerntool.com/shop/too...2201_200332201 & http://www.batteryminders.com/batter...er-desulfator/ ) in desulfate mode.

Just checked the water level since last fall Ė at/or below the top of the plates.

I didnít think the Minder would cause that much water comsumption; do others see the same?

Here some thread that might be of interest:


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Old Aug 23, 2014, 03:59 AM
Registered User
Australia, VIC, Melbourne
Joined Feb 2010
1,897 Posts
AFAIK desulfation is accomplished by overcharging. Overcharging also causes the cells to split water to H2 and O2, thus why your cells are consuming water.

The charger should have a maintenance (float?) mode, this will keep them fully charged, without excessive water losses.
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Old Aug 23, 2014, 11:09 AM
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United States, CA, Garden Grove
Joined Oct 2000
12,529 Posts
Any wet cell battery will need electrolyte levels topped off duriing/after charging even with a smart trickle charger. Fluid loss at low charge rates is less than with higher charge rates.
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