Reserve Capacity Question (Battery)
I am trying to compare battery's and they do not make it easy. Battery states: Reserve Capacity as 125 minutes at 75A. I need to know what it is at 25A? Can anyone help? Please.
Forum Discussion
I've measured my vehicles amp draw requirement just to run the engine. 8.2 amps at idle and 12.2 at 2K rpm.
YMwillV.
Its rather amazing just how little capacity a battery can have remaining, and still start a modern fuel injected engine in mild temperatures. I had one 7 year old wally world battery start my engine 'just fine' but if I tried to recharge my old tiny battery flipphone on it and not the house battery, it would not have enough juice to turn over.
I bet many engine starting batteries out there would come in at a fraction of their original capacity, if they had a 20 hour rate and were tested for the attempted 20 hours. I bet most of these vehicle owners would say their battery is 'still going strong'
As they have no Idea, and most think the alternator is magic free energy that can defy physics.
One time when my laternator failed, i remained unawares, as theOEM ammeter needle, instead of being 1/64th of an inch above neutral, was 1/64th below it. I did not notice until my flashers and windshield wipers were in slow motion. A digital voltmeter nice and visible would have made it obvious.
YMwillV.
Its rather amazing just how little capacity a battery can have remaining, and still start a modern fuel injected engine in mild temperatures. I had one 7 year old wally world battery start my engine 'just fine' but if I tried to recharge my old tiny battery flipphone on it and not the house battery, it would not have enough juice to turn over.
I bet many engine starting batteries out there would come in at a fraction of their original capacity, if they had a 20 hour rate and were tested for the attempted 20 hours. I bet most of these vehicle owners would say their battery is 'still going strong'
As they have no Idea, and most think the alternator is magic free energy that can defy physics.
One time when my laternator failed, i remained unawares, as theOEM ammeter needle, instead of being 1/64th of an inch above neutral, was 1/64th below it. I did not notice until my flashers and windshield wipers were in slow motion. A digital voltmeter nice and visible would have made it obvious.
