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<blockquote data-quote="iamagoldenoldie2" data-source="post: 431824" data-attributes="member: 8077"><p>Bogger, the old battery chargers are still useful, the modern multi stage chargers read the battery condition then start to work but if the voltage is too low Iget the error message battery failure, so I hook the dead battery top to toehold charger switch it on and not much happens, its pumping about 1 amp into the dead battery, then something miraculous happens after 3 hours its pumping about 4 amps into the dead battery , it takes a while to kick start the charging process now with the little sealed lead acid batteries I used to hook up a 12volt bulb with a potentiometer in line and set charting at 1/2 amp that way I didn't cook the battery I have some old very very heavy sealed lead acid batteries yashyua brand ex telecom 6 volters 110 amp hour they were 7.6 volt 6 years ago stored and forgotten tested voltage 3.1 so my charging technique has brought them back to 5.8 volts good for my led lights there is a wealth if information in the forum you just need to look at the suggestions old 12 volters were charged at 13 .5 volts newer batteries need about 14.5 volts and lithium iron a tad more so don't throw the older charges away,,, parallel and series wiring is another mind bender</p></blockquote><p></p>
[QUOTE="iamagoldenoldie2, post: 431824, member: 8077"] Bogger, the old battery chargers are still useful, the modern multi stage chargers read the battery condition then start to work but if the voltage is too low Iget the error message battery failure, so I hook the dead battery top to toehold charger switch it on and not much happens, its pumping about 1 amp into the dead battery, then something miraculous happens after 3 hours its pumping about 4 amps into the dead battery , it takes a while to kick start the charging process now with the little sealed lead acid batteries I used to hook up a 12volt bulb with a potentiometer in line and set charting at 1/2 amp that way I didn't cook the battery I have some old very very heavy sealed lead acid batteries yashyua brand ex telecom 6 volters 110 amp hour they were 7.6 volt 6 years ago stored and forgotten tested voltage 3.1 so my charging technique has brought them back to 5.8 volts good for my led lights there is a wealth if information in the forum you just need to look at the suggestions old 12 volters were charged at 13 .5 volts newer batteries need about 14.5 volts and lithium iron a tad more so don't throw the older charges away,,, parallel and series wiring is another mind bender [/QUOTE]
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Solar Panels - Information and Questions
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