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| Lombard/Pismo Batteries |
Posted by: J English Smith on 2015-10-20 14:24:18
No relation to seller - this is the best price I've seen in quite a while on new batteries from Apple service parts for the main G3 batteries. And they even offer a 30-day warranty. For anyone after a battery for a Pismo or Lombard, this would definitely be cheaper than re-celling. They appear to have multiples...
http://www.ebay.com/itm/New-Genuine-Apple-PowerBook-G3-Rechargeable-Battery-M7318-661-2295-/400963410856?hash=item5d5b481ba8:g:EekAAOSwpDdVCgIK
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Posted by: TheWhiteFalcon on 2015-10-20 14:41:35
At this point it's likely the cells wouldn't even take a charge, seems like a real crapshoot.
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Posted by: Unknown_K on 2015-10-20 17:37:20
I would look up what feedback the seller got from those batteries. The price seems high for batteries that should be well past use date, but I have working stock batteries from laptops older then a Pismo that work so you never know.
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Posted by: J English Smith on 2015-10-21 08:05:28
My experience has been hit or miss, but some of the old Apple li-ions have charged up just fine. I bought two NOS ones a few years back that are still pushing about 4200 mAh (about an hour and a half of normal runtime). Since this seller appears to be offering to take returns - that seems to take some of the risk out of it. The guy I bought from down in FL was offering no guarantees, so I got lucky there. Some other older ones that are "condition unknown" I pass on. And I also bought one $20 brick and don't need to do that again.
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Posted by: TheWhiteFalcon on 2015-10-21 08:39:17
I have three OEM batteries; one doesn't charge, one does but lasts about five minutes, the other looks to last a few hours at the least.
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Posted by: unity on 2015-10-21 09:28:58
Unused batteries have a tendency to work fairly well. Its like caps on motherboards. NOS boards rarely show any leakage because the caps have not been subjected to heat and use.
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Posted by: techknight on 2015-10-21 16:58:18
My 3400c battery still manages to hold its full charge, strangely enough. Maybe it wasnt used much.
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Posted by: Trash80toHP_Mini on 2015-10-21 19:55:15
What are the charge cycle count characteristics of the different PowerBook Battery types across the generations?
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Posted by: TheWhiteFalcon on 2015-10-21 21:08:01
From...probably the G3's until about 2008 it was roughly 300 cycles. Then they boosted it to 500 once they started sealing them inside, and somewhere around 2010-2011 they upped it to 1000 cycles. (all of those are "It'll still hold 80% after that many charge cycles", not "They'll be dead by then")
Today, Macs, iPads and the Watch are 1000 cycles, iPhones are 500, iPods are 300 still.
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Posted by: J English Smith on 2015-10-22 08:07:49
My 5th gen iPod classic is still going strong after 8+ years. Haven't babied the battery, either. Same with the shuffles. It's amazing how long some of them can last.
I've still got about 6-7 working Pismo batteries, ranging from ~2200 mAh to ~4500 mAh. Nice to have the option of being uunplugged for about an hour, and of course I can always pop two in if I want to go longer. Won't last forever, but at least for now, most are hanging in there.
When they start to fail, you can see the drop in fully charged mAh pretty precipitously. Every charge, they take a little less.
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Posted by: haemogoblin on 2015-12-18 02:53:04
Is there still no way to recycle these batteries and fit them with new cells?
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Posted by: TheWhiteFalcon on 2015-12-18 05:29:20
Lithium ion rebuilding is a touchy business still.
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Posted by: techknight on 2015-12-18 14:54:33
hardest thing is re-virginizing the controllers.
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Posted by: CC_333 on 2015-12-18 21:10:12
It's probably doable, though....
....With special hardware/software, perhaps? Or perhaps not?
I know little to nothing about such things at this point.
c
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Posted by: TheWhiteFalcon on 2015-12-19 08:32:12
It seems like the thing to do would be to rebuild a pack that still takes some charge, right?
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Posted by: Unknown_K on 2015-12-19 12:13:55
Depends. If the circuit thinks the specs of the new batteries are out of spec it might just die on you.
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Posted by: TheWhiteFalcon on 2015-12-19 12:19:55
I've got three Lombard/Pismo packs, one that lasts about 30 seconds, one that lasts 10 mins, and one that lasts about three hours. Might be willing to sacrifice the 10 minute one. 🙂
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Posted by: CC_333 on 2015-12-19 19:14:29
Why not sacrifice the 30 sec. one? Too far gone you think?
c
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Posted by: techknight on 2015-12-20 11:25:18
Take the pack that lasts a few hours, and clone its EEPROM onto the other two. Then change the cells. itll be fine afterwords.
Also before you do this, make sure the good battery is charged all the way up. Then disassemble. That way the eeprom is left in a state of "full charge"
Then clone eeproms, swap the cells. Let the rebuilt batteries die and recharge. it will recalibrate itself.
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