That's what it is in the 8201a too, IIRC. So if the rail is 5V the NiCD is seeing a charge current of ~ 3 mA - Which may explain some of the
resurrections of dormant laptops after prolonged noodling around with them... Thanks for sharing! ... On 5/31/17, Josh Malone <[email protected]> wrote: > The m100 techref schematic shows 1.6k (I think - it's an awful photocopy I > found online) > > https://dl.google.com/dl/androidjumper/mtp/502266/androidfiletransfer.dmg > > On Wed, May 31, 2017 at 2:01 PM, John Gardner <[email protected]> wrote: > >> That's a good point! Do you know offhand the size of the >> >> current-limiting resistor in series with the NiCD? >> >> On 5/31/17, Brian White <[email protected]> wrote: >> > I had given 80mah as part of the search term to use, because that is >> > the >> > standard capacity of the current standard drop-in replacement for the >> same >> > size/shape/style as the old nicd battery. The nicd version were 50 to >> > 60 >> > mah. >> > >> > I'm not worried about overcharging because the internal battery is only >> > charged while the main power is turned on, and by default it turns >> > itself >> > off when idle for 10 minutes. >> > >> > To overcharge the internal battery, you would have to actively use the >> > thing for more than a day or so to get into that territory, or disable >> the >> > 10 minute idle power off, and, do one of those while plugged in to the >> > wall. Normally, either you turn it off, or it shuts itself off, or the >> > AA >> > batteries die long before 24 hours. >> > >> > I thought I read somewhere that you had the same limit with the >> > original >> > battery too anyway, ie that you couldn't charge that forever either. >> > But >> I >> > don't see any such admonition in the user or service manuals, and it is >> > possible to trickle charge nicd (more or less, it's not actually >> harmless, >> > just not quickly catastrophic), so, perhaps that is a valid >> consideration. >> > >> > Personally, I would not, for example, plug an M100 into the wall, issue >> > a >> > POWER CONT in basic, and then run it 24/7 as a server or something, >> > even >> > with the original battery. So, short of that, I see no difference. >> > >> > And, when you search for the original batteries by actual part/model >> > number, vendors and manufacturers offer nimh's as replacements. That >> tells >> > me that the new battery is expected to work in the same conditions as >> > the >> > old. >> > >> > -- >> > bkw >> > >> > On May 30, 2017 10:05 PM, "Josh Malone" <[email protected]> wrote: >> > >> >> Okay - I was looking for 80mAh for some reason. The ref manual doesn't >> >> specify the capacity, but I see the R/S part was a 50mAh originally. >> >> >> >> So, yeah, other than having to buy 4 at a time, ebay wins. I'm gonna >> wind >> >> up with quite a stock of 100/102 spare parts at this rate. >> >> >> >> -Josh >> >> >> >> On Tue, May 30, 2017 at 9:22 PM, Mike Stein <[email protected]> >> wrote: >> >> >> >>> eBay 401159712873, 400826285784 etc. >> >>> >> >>> ----- Original Message ----- >> >>> *From:* Josh Malone <[email protected]> >> >>> *To:* [email protected] >> >>> *Sent:* Tuesday, May 30, 2017 8:31 PM >> >>> *Subject:* Re: [M100] Oh no - think my internal nicad finally given >> >>> up >> >>> theghost >> >>> >> >>> nimh are just easier to find it seems. A quick googling finds a >> >>> godzillion sources of NiMH cells in the right specs, but I can't >> >>> actually >> >>> find an easy supplier of nicd cells in the right specs. >> >>> >> >>> On Tue, May 30, 2017 at 6:31 PM, John R. Hogerhuis <[email protected]> >> >>> wrote: >> >>> >> >>>> What's wrong with NiCd? As designed... >> >>>> >> >>>> -- John. >> >>>> >> >>> >> >>> >> >> >> > >> >
