Posted by 440roadrunner on January 10, 2010 at 18:35:26 from (98.145.86.12):
In Reply to: Battery problem. posted by mike in new mexico on January 10, 2010 at 17:03:12:
I find your post a little confusing BUT
Just because a battery is NEW does not mean it is GOOD
A new battery that is "fresh" should not need much charging.
If BOTH the old and new batteries have acess to the cells, buy and learn to use a hydrometer, and learn to use the thermometer compensation chart---specific gravity changes with temp.
Have the new one tested on a REAL load tester. Any tester that you can easily pick up with one hand is not a REAL load tester
When you say your needle is "going crazy," it is probably wise to check with a voltmeter-----
How low is the new battery voltage?
Any chance it got discharged and reverse charged?
If it is REALLY low or has a bad cell the charger needle may be "going nuts" because it's cycling on the internal breaker--they can go on/off similar to a flasher
Is it possible the charger blew a diode? Try the charger on a known good battery and see what it does.
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