Will a battery tender fully charge a dead battery?
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From: Taylortucky, MI
Will a battery tender fully charge a dead battery?
I have a brand new 20lb. Die Hard Gold that has been sitting on a shelf in my garage for two years, I put it in my buddies 2004 Deuce and let it sit overnight on a battery tender and finally got the green light, tried starting it this morning and it just seems there's not enough juice to turn it over, jist the click click click of the starter?
just wondering if the battery tenders charge a battery to full capacity or just maintain the charge that is already in a battery?
just wondering if the battery tenders charge a battery to full capacity or just maintain the charge that is already in a battery?
Last edited by Buckinfitch; Feb 19, 2012 at 10:50 AM.
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From: El Paso, Texas
Have the battery load tested. I have seen batteries that would take a charge but would not create enough amps to start a vehicle. Battery is probably bad after setting for two years.
Last edited by Dionicio; Feb 19, 2012 at 10:42 AM.
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From: Taylortucky, MI
my charger only has 2 amp, 20 amp, 60 amp settings, so if I charge it overnight/24hrs, on the 20 amp setting that might do it?
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From: Phoenix '53, '88, '09 Big Twins
yes, go 20 hours, then do 2 amps for 10 hours.
watch for excessive heat from the battery casing, and no smoke/no sparks, batteries release hydrogen gas when charging.
Mike
watch for excessive heat from the battery casing, and no smoke/no sparks, batteries release hydrogen gas when charging.
Mike
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From: WPB, FL
Sounds Like
If the green light came on and the battery still doesn't have the proper power it sounds like a bad battery. While a tender does charge a battery, the green light only indicates that it sees the battery as fully charged. A surface charge would give that indication. I'd be willing to bet that with the green light lit, the battery at rest would indicate 12.9 volts and the second you go to crank the bike over the voltage drops way off.
If the charger is automatic (voltage drops automatically as charge progresses) run it at 20A. If not automatic, get a cheap 10A automatic charger and run that. With a 10A charger you should be able to charge a dead battery up overnight. I don't know that I'd trust a 2 year old battery not stored properly.
If the charger is automatic (voltage drops automatically as charge progresses) run it at 20A. If not automatic, get a cheap 10A automatic charger and run that. With a 10A charger you should be able to charge a dead battery up overnight. I don't know that I'd trust a 2 year old battery not stored properly.
Last edited by jeffreydsilver; Feb 19, 2012 at 11:03 AM.
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From: naples fl.
If you left it uncharged for two years its definetly no good, Being a diehard dose'nt help either.
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From: Taylortucky, MI
about 2 weeks, maybe a half of dozen starts on it, took it out and it sat since (on a wooden shelf in it's original box)
I did a quick ˝ hr. 2 amp charge and just tried it... still click click click but much faster now? now charging on 20amp hold ... for how long?
Last edited by Buckinfitch; Feb 19, 2012 at 11:15 AM.
