Re: [M100] 8201A Internal Battery Questions
That's what I use. Works a treat On Sat, 15 Jan 2022, 7:30 am Peter Vollan, wrote: > many people like a Supercap > > On Thu, 13 Jan 2022 at 21:47, Alex // nytpu wrote: > >> On 2022-01-13 08:40PM, Gregory McGill wrote: >> > Also emailing me when I'm out of stock on something gets much faster >> > results than posting on a group >> Sorry, I didn't know I could email you to request something. >> >> I wasn't posting to the group to call you out or expect you to get it in >> stock faster, I was mostly asking if anyone had any alternatives to the >> real replacement batteries. >> >> ~nytpu >> >> -- >> Alex // nytpu >> a...@nytpu.com >> gpg --locate-external-key a...@nytpu.com >> >
Re: [M100] 8201A Internal Battery Questions
many people like a Supercap On Thu, 13 Jan 2022 at 21:47, Alex // nytpu wrote: > On 2022-01-13 08:40PM, Gregory McGill wrote: > > Also emailing me when I'm out of stock on something gets much faster > > results than posting on a group > Sorry, I didn't know I could email you to request something. > > I wasn't posting to the group to call you out or expect you to get it in > stock faster, I was mostly asking if anyone had any alternatives to the > real replacement batteries. > > ~nytpu > > -- > Alex // nytpu > a...@nytpu.com > gpg --locate-external-key a...@nytpu.com >
Re: [M100] 8201A Internal Battery Questions
Sorry, I fixed the inventory level. If you want to use a CR2032 you need to include a diode so keep the computer from trying to charge it. Jeff Birt (Soigeneris) -Original Message- From: M100 On Behalf Of Alex // nytpu Sent: Thursday, January 13, 2022 8:36 PM To: m100@lists.bitchin100.com Subject: [M100] 8201A Internal Battery Questions Hi all, A NEC PC-8201A I picked up just arrived, and I have a few questions, particularly on the internal battery. It arrived and didn't boot with fresh alkaline batteries, so I opened it up. The internal NiCd battery was starting to corrode so I removed it (lucky I caught it now before there was a disaster). Everything else looked perfect internally so I closed it back up and tried booting it again, and it worked perfectly! It's obviously not an issue but I was just wondering if anyone had that happen---it's strange to me that a dead battery being present doesn't boot at all while no battery at all works fine. On replacing the internal battery, according to this email[a] from November both ArcadeShopper and Soigeneris had replacement batteries, however looking now neither of them have any in stock. Does anyone know if they're going to get any more in? I don't mind waiting if it'll just be a while but if they aren't planning on ever getting them back I'll look around elsewhere for one. For alternatives, since the internal battery seems to be recharged from the main battery pack I assume a regular CR2032 would be a no-go, but has anyone tried out soldering in a socket + LIR2032? ~nytpu [a]: http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/2021-November/054669.html -- Alex // nytpu a...@nytpu.com gpg --locate-external-key a...@nytpu.com
Re: [M100] 8201A Internal Battery Questions
On 2022-01-13 08:40PM, Gregory McGill wrote: > Also emailing me when I'm out of stock on something gets much faster > results than posting on a group Sorry, I didn't know I could email you to request something. I wasn't posting to the group to call you out or expect you to get it in stock faster, I was mostly asking if anyone had any alternatives to the real replacement batteries. ~nytpu -- Alex // nytpu a...@nytpu.com gpg --locate-external-key a...@nytpu.com signature.asc Description: PGP signature
Re: [M100] 8201A Internal Battery Questions
On 2022-01-13 10:26PM, Brian K. White wrote: > Without some hacking, you can't use anything else, just nicd or nimh, > 3.6v (3 cell), and even with the correct battery, you can't leave it > plugged in more than about a day, 2 at the most. More than that and > you're cooking the battery off. The charging circuit is very crude, no > intelligent battery management, doesn't cut itself off, etc. Yeah, I realized right after sending the email that putting a lithium ion battery in there without any charging circuit was a recipe for disaster. > I recommend squirting a little bob of hot-glue under the battery to > hold it and provide strain relief for the solder joints. Will definitely try this. Since ArcadeShopper has them in stock I'll probably get one from there, but thanks for your helpful suggestions! Thanks! ~nytpu -- Alex // nytpu a...@nytpu.com gpg --locate-external-key a...@nytpu.com signature.asc Description: PGP signature
Re: [M100] 8201A Internal Battery Questions
Also emailing me when I'm out of stock on something gets much faster results than posting on a group On Thu, Jan 13, 2022, 8:26 PM Gregory McGill wrote: > I have more > > On Thu, Jan 13, 2022, 6:33 PM Alex // nytpu wrote: > >> Hi all, >> >> A NEC PC-8201A I picked up just arrived, and I have a few questions, >> particularly on the internal battery. >> >> It arrived and didn't boot with fresh alkaline batteries, so I opened it >> up. The internal NiCd battery was starting to corrode so I removed it >> (lucky I caught it now before there was a disaster). Everything else >> looked perfect internally so I closed it back up and tried booting it >> again, and it worked perfectly! It's obviously not an issue but I was >> just wondering if anyone had that happen---it's strange to me that a >> dead battery being present doesn't boot at all while no battery at all >> works fine. >> >> On replacing the internal battery, according to this email[a] from >> November both ArcadeShopper and Soigeneris had replacement batteries, >> however looking now neither of them have any in stock. Does anyone know >> if they're going to get any more in? I don't mind waiting if it'll just >> be a while but if they aren't planning on ever getting them back I'll >> look around elsewhere for one. >> >> For alternatives, since the internal battery seems to be recharged from >> the main battery pack I assume a regular CR2032 would be a no-go, but >> has anyone tried out soldering in a socket + LIR2032? >> >> ~nytpu >> >> [a]: >> http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/2021-November/054669.html >> >> -- >> Alex // nytpu >> a...@nytpu.com >> gpg --locate-external-key a...@nytpu.com >> >
Re: [M100] 8201A Internal Battery Questions
I have more On Thu, Jan 13, 2022, 6:33 PM Alex // nytpu wrote: > Hi all, > > A NEC PC-8201A I picked up just arrived, and I have a few questions, > particularly on the internal battery. > > It arrived and didn't boot with fresh alkaline batteries, so I opened it > up. The internal NiCd battery was starting to corrode so I removed it > (lucky I caught it now before there was a disaster). Everything else > looked perfect internally so I closed it back up and tried booting it > again, and it worked perfectly! It's obviously not an issue but I was > just wondering if anyone had that happen---it's strange to me that a > dead battery being present doesn't boot at all while no battery at all > works fine. > > On replacing the internal battery, according to this email[a] from > November both ArcadeShopper and Soigeneris had replacement batteries, > however looking now neither of them have any in stock. Does anyone know > if they're going to get any more in? I don't mind waiting if it'll just > be a while but if they aren't planning on ever getting them back I'll > look around elsewhere for one. > > For alternatives, since the internal battery seems to be recharged from > the main battery pack I assume a regular CR2032 would be a no-go, but > has anyone tried out soldering in a socket + LIR2032? > > ~nytpu > > [a]: > http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/2021-November/054669.html > > -- > Alex // nytpu > a...@nytpu.com > gpg --locate-external-key a...@nytpu.com >
Re: [M100] 8201A Internal Battery Questions
On 1/13/22 21:36, Alex // nytpu wrote: Hi all, A NEC PC-8201A I picked up just arrived, and I have a few questions, particularly on the internal battery. It arrived and didn't boot with fresh alkaline batteries, so I opened it up. The internal NiCd battery was starting to corrode so I removed it (lucky I caught it now before there was a disaster). Everything else looked perfect internally so I closed it back up and tried booting it again, and it worked perfectly! It's obviously not an issue but I was just wondering if anyone had that happen---it's strange to me that a dead battery being present doesn't boot at all while no battery at all works fine. Perfectly expected. The dead battery is pulling the vcc rail down. If you left the unit plugged in to the wall for about a day, it *might* have brought the battery back up enough to allow booting, though it would still be an old battery with no capacity and starting to leak. You still needed to replace it regardless so no loss. On replacing the internal battery, according to this email[a] from November both ArcadeShopper and Soigeneris had replacement batteries, however looking now neither of them have any in stock. Does anyone know if they're going to get any more in? I don't mind waiting if it'll just be a while but if they aren't planning on ever getting them back I'll look around elsewhere for one. For alternatives, since the internal battery seems to be recharged from the main battery pack I assume a regular CR2032 would be a no-go, but has anyone tried out soldering in a socket + LIR2032? Without some hacking, you can't use anything else, just nicd or nimh, 3.6v (3 cell), and even with the correct battery, you can't leave it plugged in more than about a day, 2 at the most. More than that and you're cooking the battery off. The charging circuit is very crude, no intelligent battery management, doesn't cut itself off, etc. You can use larger or smaller capacities if you wanted to deal with rigging up your own physical mounting and running wires, as long as they were the same chemistry and voltage. So for instance you could use a much larger 3xAA cell pack, as long as it's 3 nicd or nimh cells for the same 3.6v and the same nicd or nimh chemistry, but you'd have to find some other place to mount it and run wires. You could use something totally different only if you include a diode to prevent the charging circuit from being able to charge the battery, but a cr2032 would die fast. For a replacement battery, google "3v80h 2pin nimh" You'll still get a lot of 3-pins in the results so pay attention to only look for the 2-pin ones. There will also be a lot of questionable ones on ebay that I would be careful about. Some will be good but some will be junk that looks good but leaks after a year or it's reject or old stock that should have been thrown out etc. This is a good one. https://www.batterystore.com/3-v80h-2p-55608-303-015/ Particularly, the wire tab that this one has is a bit specially recommended for 8201 because there is a trace on the pcb that runs very close to the + pin. There is another common battery tab style with flat sheet tabs that can short that trace, and the wire type above is better than for example this type: https://www.batterymart.com/p-3_6v-80m-2-pin-nimh-battery.html I recommend squirting a little bob of hot-glue under the battery to hold it and provide strain relief for the solder joints. -- bkw
[M100] 8201A Internal Battery Questions
Hi all, A NEC PC-8201A I picked up just arrived, and I have a few questions, particularly on the internal battery. It arrived and didn't boot with fresh alkaline batteries, so I opened it up. The internal NiCd battery was starting to corrode so I removed it (lucky I caught it now before there was a disaster). Everything else looked perfect internally so I closed it back up and tried booting it again, and it worked perfectly! It's obviously not an issue but I was just wondering if anyone had that happen---it's strange to me that a dead battery being present doesn't boot at all while no battery at all works fine. On replacing the internal battery, according to this email[a] from November both ArcadeShopper and Soigeneris had replacement batteries, however looking now neither of them have any in stock. Does anyone know if they're going to get any more in? I don't mind waiting if it'll just be a while but if they aren't planning on ever getting them back I'll look around elsewhere for one. For alternatives, since the internal battery seems to be recharged from the main battery pack I assume a regular CR2032 would be a no-go, but has anyone tried out soldering in a socket + LIR2032? ~nytpu [a]: http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/2021-November/054669.html -- Alex // nytpu a...@nytpu.com gpg --locate-external-key a...@nytpu.com signature.asc Description: PGP signature
