raymondj(at)frontiernet.n
Guest
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 Posted: Sun Jan 13, 2013 8:35 pm Post subject: Resurrecting a battery |
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Greetings,
Here's my report on trying to resurrect "killed" lead acid batteries. No success. After 48 hours on the high voltage/current limited setup neither of the lead acid open batteries or a couple of old sealed lead acid batteries I was experimenting with showed any life. I tested them for voltage about 24 hrs after the charge attempts and none read as high as 12V. I used 75W bulb instead of 100 'cause it was the only incandescent bulb I had and I figured a compact fluorescent wasn't going to work :>). I assume that that lowered the current limit but still provided the voltage I was looking for.
Bottom line. It was educational and I have one more trick to try on marginal batteries.
Thanks to everyone who contributed to the discussion. Sorry I didn't have any success to share.
| Quote: | Raymond Julian
Kettle River, MN.
"And you know that I could have me a million more friends,
and all I'd have to lose is my point of view." - John Prine |
On 09/28/2012 04:42 PM, rayj wrote:
[quote]--> AeroElectric-List message posted by: rayj <raymondj(at)frontiernet.net> (raymondj(at)frontiernet.net)
On 09/28/2012 01:12 PM, Robert L. Nuckolls, III wrote:
| Quote: | You can put a 100w light bulb in series with a diode
bridge rectifier and use this as a current limited source of
high voltage to hook to your battery(ies). Watch the voltage across
the battery. If the chemistry is coming awake, the voltage
should begin to drop and ultimately level off at normal
levels expected for a 1 amp constant current charge.
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Here's where my ignorance starts showing. Is this setup using mains voltage? Rectified and current limited? 120+ volts DC, current limited to 1-2 amps?
Raymond Julian
Kettle River, MN.
"And you know that I could have me a million more friends,
and all I'd have to lose is my point of view." - John Prine
[b]
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