Anthony, It's actually not too difficult. Unlike the 100/102, the 200 PCB was designed to allow this modification. I don't have access to the manuals right now but basically, you disassemble the unit (Not an easy task so please be careful especially with the ribbon cable connecting the monitor) and you will see a separate PCB board holding the extra RAM modules and the option ROM. On that PCB there are 4 holes for 2 jumpers. The screen printing that surrounds them says Ni-CD. You just solder two jumper wires. I'm in the process of doing this right now. Unfortunately, my soldering iron died so I'm waiting for a new one to arrive before I finish. After the jumpers are put in place, the unit will trickle charge any batteries placed in the battery compartment. So that means you can't put normal batteries in and have AC connected at the same time. Kurt
On Wed, May 2, 2018, at 4:47 AM, Anthony Coghlan wrote: > Kurt, if it’s not already posted somewhere (in which case you can just > refer me through the link), could you post / share the procedure for > converting a 200 to use rechargeable AA batteries? It was fortunately > easy on the 100 but I believe a bit more involved on both the 200 and > 102. Thanks. That would be a nice upgrade. I’ll check my NiCd > backup battery while I’m in there also...> > Best wishes, > Anthony > > > > On Tuesday, May 1, 2018, Kurt McCullum <ku...@fastmail.com> wrote: >> __ >> Supercap definitely won't work in a 200. Just disassembled mine to >> finally put a NiCd backup battery back in and make the conversion to >> rechargeable AA batteries .>> The supercaps do work in my 102 and 8201. >> >> Kurt >> >> >> On Mon, Apr 30, 2018, at 5:26 PM, John Gardner wrote: >>> I did'nt change anything. Note, however, that the 8201a is >>> similar>>> >>> but not identical to the 100/102. It's probably worth comparing the>>> >>> schematics before doing the modification. Kurt, IIRC, had some >>> >>> issues with dropping a supercap into a 200... >>> >>> On 4/30/18, Jeffrey Birt <bir...@soigeneris.com> wrote: >>>> Did you need to replace any part of the charging circuitry? I >>>> suspect not as>>>> it was the NiCad was only a 50mah part and if it was >>>> charge as C/10 >>>> then any>>>> super cap could handle the 5ma with no issues (I'm guessing). >>>> >>>> Jeff >>>> >>>> -----Original Message----- >>>> From: M100 <m100-boun...@lists.bitchin100.com> On Behalf Of John >>>> Gardner>>>> Sent: Monday, April 30, 2018 4:50 PM >>>> To: m...@bitchin100.com >>>> Subject: Re: [M100] New user, AA battery leakage >>>> >>>> I replaced my two 8201a NiCds with supercaps 6-7 years ago. >>>> >>>> It just works, so far. >>>> >>>> >>>> >>>> >>
