I have an old car and battery with the Negative dis connected, I
charge it, 2 days later it shows 70% charge of 12v or so, is it a junk
battery, I think so. Only the Positive is connect but the case is clean
He asked if the battery is viable or junk?
I've no idea what the answer is, but I think I'd clip a headlight to it
to drain it down until the light dimmed, then recharge again and see
what it looked like. And, ask how he's measuring the charge remaining.
accurate measurement of state of charge by volatage is difficult.
The voltage range from 100% to 0 is all in the "12 volt or so range".
For most anything you want to know about batteries:
I thought it might be above your comprehension.
Read your original message. You were drunk when you wrote it. Sometimes
you're lucid, and sometimes you're not. I don't care enough to watch for a
pattern, but I wonder if your most incoherent messages are written from late
Not entirely clear on the question, but if the battery in question is a
conventional type, more than about 5 years old and has sat uncharged in
the vehicle for some time you can safely consider it junk even if it
seems to take a charge. It might hold out for a couple start cycles in
the car and then will surely leave you stranded in short order.
It's either an exchange for a new battery core charge, a lead sale to a
scrap dealer, or if you really want to extract every ounce of service
life from it, use it in something that won't leave you stranded like a
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