Re: Advice wanted battery problem.

On Sun, 27 Apr 2008 17:44:45 +0100, "postie"
<postie-at-madasafish-dot-com> wrote:

Your help is required please,

I have a problem with a 14 month old 110 amp hour battery.

Disconnected the Multi meter reading 12.2 volts

Connect battery to van, onboard gauge reading 11.9 volts

Use battery for about 1 hour voltage on onboard gauge reading drops to .9
volts pump plays up lights hardly work

Change battery to spare everything is fine and works well.

Multi meter reading 11.7 volts on problem battery after disconnecting from
van. Electrolyte level is quarter to half inch above plates when I used a
hydrometer to check individual cells I get a reading of 11.5 for all six
cells.

Any suggestions would be appreciated.

With a reading of 12.2 volts disconnected I would consider that the
battery was to all intents and purposes flat and in need of charging.
I would charge it with a bench charger charging at 5 amps or so for 24
hours, by which time the voltage should be in the region of 14.5 volts
whilst still connected to the charger, then disconnect and leave for a
couple of hours and if the battery is in decent condition you should
expect to see a voltage of about 12.9 volts.
If you are relying on your caravans battery charger to charge the
battery and it is giving you the results that you say above then it
would seem that your caravan battery charger is faulty. Most of them
are not designed to fully charge a battery they are designed to give a
maximum voltage at which the caravans equipment will work
satisfactorily which is not always the best voltage for achieving a
full charge in the battery.
Bill Lord
I've taken a vow of poverty To annoy me send money

e-mail messages to bill dot lord at uku dot co dot uk
( Get rid of the spaces and use symbols for the hyphen at and dots )
.

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