Uneven Water Loss in Batteries - Page 3 - SailNet Community
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post #21 of 22 Old 11-02-2013
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Re: Uneven Water Loss in Batteries

One battery may be gassing more than the other simply because you've got something unbalanced.

That is, the cabling may not be perfectly symmetrical and same length to both batteries, so one is getting more power and boiling out faster. Or, one may be in a hotter location than the other, getting less airflow or in a position where more heat builds up.

I'd check all the gross environmental issues that can cause uneven heating before screwing around with the acid and looking for a bad battery.
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post #22 of 22 Old 11-02-2013
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Re: Uneven Water Loss in Batteries

Originally Posted by Delta-T View Post
And one more for the books...
A damaged battery cable will carry less electrical energy than a battery cable in good repair. A battery cable can become damaged by mechanical stresses or corrosion. It is important, therefore, to periodically replace battery cables that are installed in an environment where there is vibration, movement, or corrosive chemicals. An ohmmeter or a digital multimeter may be used to test a suspected bad battery cable. If the ohmmeter measures a high degree of resistance in the cable, the cable should be replaced.

Sorry no scientific data to back that up.
Agreed a damaged cable can have issues. However a properly made cable with heatshrink using good tinned marine wire and installed properly should not have issues with vibration or corrosion for many, many years.

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