I've seen (and read) previous threads in this forum regarding this issue, but haven't read about the recovery of a "no too dead" battery.
************* FOR YOUR SAFETY ********************
First of all, some of the activities depicted in here involves the handling of corrosive sulphuric acid (O4H2S) so EXTREME care sould be taken to avoid eyes/skin/clothes... or whatever contact with acid.
This procedure is for your knowledge only, and any attempt to reproduce what I explain in here shall be done at your own risk, and taking whatever precaution is needed.
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What I did:
A few days ago I received my 9114B, as the battery pack was dead I removed it and plugged a bench power supply (6,8v and up to 4A) to the inside connector: the drive worked fine... so far so good, then I turned to the battery pack just to realize that it is a 88014A instead of the 88014B.
Despite of that I opened it, took the Panasonic LCR-226 battery and pry the top cover away (a good cutter and a lot patient needed), under the cover there is a transparent plastic piece with a pair of ultrasonic welded posts that holds three rubber caps each of wich was "sealing" a Lead-Acid cell.
Once the plastic and the caps were removed, I can put some acid solution (1cc or so on each cell) I took it from my car's battery using a syringe.
The cellulose inside the cell still looks fairly dry so I decided to drop some (another 2cc + or -) distilled water in it.
Put the caps back and the plastic piece on its place, some cyano-acrilate (superglue) here and there and 24 hours 100mA deep, deep charge and the battery is back to (a fairly healthy) live.
I've done some dozens of write/read operations for the last two days and the three led charge gauge has always been on...
...Nevertheless I'm in need of some help.
1.- Does somebody have the schematics for the 88014B? (I've read elsewhere it has a more elaborated charging circuit, and I'd like to reproduce it)
2.- Did someone try to fit an 88014B circuit in a 88014A housing? Does it use the same SLA 6v 2'4Ah battery?
3.- Will a regulated (e.g. LM723) supply do the job without the need of a battery? (I'm not going to use it outdoor)
4.- Am I the only mad guy trying to "manufacture" his own
Power/Batery Packs? (Ok... you don't have to answer this last question :-)
Thanks in advance, and kind regards from the Canary Islands.