General > General Technical Chat
Lead acid... it's dead isn't it?
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bdunham7:

--- Quote from: paulca on February 25, 2021, 08:33:47 pm ---4.3A

I'll let it run a while longer, but I'm not leaving it overnight at 16V, not unattended.  So I'll cut it when I am off to bed.  I might drop it back down to 13.6V and leave it overnight then hook it back up to the panel.  Maybe it helped.

--- End quote ---

Don't reduce it, just stop until you can resume supervised cooking.  Definitely don't leave it unattended!  It doesn't look good, if C/10 or less gives you 16 volts.  But there's no point in not continuing the experiment tommorrow--nothing to lose at this point.
paulca:
Well, so I turned it back on the next day and it took 6.5A for a few minutes, I left it for a few hours and it dropped to 3.2A.

I gave up and hooked it back up to the panel.

Seems to have had some effect.  It averaged 13.0V the first 24 hours and running the garage lights it only drops to 12.44V now.
tautech:

--- Quote from: paulca on February 28, 2021, 07:35:12 pm ---Well, so I turned it back on the next day and it took 6.5A for a few minutes, I left it for a few hours and it dropped to 3.2A.

I gave up and hooked it back up to the panel.

Seems to have had some effect.  It averaged 13.0V the first 24 hours and running the garage lights it only drops to 12.44V now.

--- End quote ---
Good.
What this shows is LA likes some exercise so bump the battery back up to ~14.4V and drag it down a time or two more and you should get some more useful life from it.
paulca:
Battery is doing ok, but as it's Spring and the panel is generating more than enough power...

Is it wise to bring the battery down low, maybe 10.8V at 1 amp and THEN give it the slap in the face charge at 10amps at 15V?

tautech:
Cycling LA's is often beneficial like the occasional gassing charge just don't overdo it.
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