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Classic Battery—Positive Experience

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Classic Battery—Positive Experience

#1 Post by kmasterk » Tue Jun 09, 2020 9:08 am

I recently get a refurbished battery for my venerable 755C from Paul, aka goldeneagle (memberlist.php?mode=viewprofile&u=60882). Finding a "new" battery for this vintage is nearly impossible, but Paul's battery works even better than I had hoped. I use mostly WordStar 7 in DOS 6.22, with some tinkering in WFW 3.11, and am averaging about 5-6 hours per charge.

Not only does it work well, but it was a fair price, shipped quickly, and came with top-notch support.

If you are looking for a hard-to-find battery, or a refurbishment of a dead one, I highly recommend Paul's services!

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Re: Classic Battery—Positive Experience

#2 Post by atagunov » Tue Jun 09, 2020 12:07 pm

There's actually a "trade secret" I'd like to learn about refurbishing the batteries.. How does one connect to consecutive batteries in a chain? It's obvious that you weld/solder wires to the first/last battery in the chain, but what do you do between the batteries?.. Do you use any solder there (if you're soldering not welding)?..
X220, 2 *T520

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Re: Classic Battery—Positive Experience

#3 Post by cadillacmike68 » Wed Jun 10, 2020 1:13 am

I wonder if Paul can provide or fix my 600 and T22/T30 batts...
600, 600X
T21 2647 T22 2647 1@ 1GHz SXGA+ 4 more; T23 2647 1@ 1.2GHz SXGA+ 3 more
T30 2366-88U 2GHz; 2366-83U 1.8G; 5@ 2366-LU0/66U; 2367-KU6 FUBARd
T41 T42 T43
T61 8897 2.4GHz SXGA+; 8898 2.4Ghz; 6463 2@ WSXGA+; 7658 2.5GHz; T61p; 6 more T61s
T500 2
T530 W530

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Re: Classic Battery—Positive Experience

#4 Post by fatkatsupra1 » Sat Jun 13, 2020 9:24 pm

Thank you for posting your experience. I PM'd Paul!

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Re: Classic Battery—Positive Experience

#5 Post by goldeneagle » Tue May 04, 2021 7:16 pm

cadillacmike68 wrote:
Wed Jun 10, 2020 1:13 am
I wonder if Paul can provide or fix my 600 and T22/T30 batts...
Sorry I've been kinda out of the loop.

I've done T2x batteries, but back in 2007! I think those, we reset the EEPROM that stored battery characteristics using a program called Smart Battery Workshop, done by a Russian developer. It was shareware, but the guy I worked for bought all the rights and then killed development afterwards.

The 600 batteries were crap then, and crap now. A lot of them actually have cells that amazingly can be revived. I think the problem is the piss poor battery management hardware from Panasonic. I can't speak to the aftermarket batteries, since they're completely different internally than the IBM OEM ones.

I rebuilt a bunch of packs, and they're all iffy on if they still work or not. I think I might've reused some old cells at the time, but the 600 packs are fairly straightforward for the most part.
Historic ThinkPads owned:
300 (x3) 360C/CSE/CE/P, 510CS, 560/E/Z, 600E/X, 701C/CS, 730TE, 750/C, 755C(x3)/CE(x3)/CX/CDV/CD, 760EL,XD/765L, 770
Newer ThinkPads owned:

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