[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-23 Thread Kevin McQuiggin (SFU) via cctalk
If you can’t be bothered to read a document then I don’t think you can have any valid opinion or comment on it. Sent from my iPad > On Dec 23, 2022, at 14:11, Cameron Kaiser via cctalk > wrote: > >  >> >>> dumb charger. Might be worth a watch, but the tl;dr seems to be that trickle >>

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-23 Thread Cameron Kaiser via cctalk
> > dumb charger. Might be worth a watch, but the tl;dr seems to be that trickle >     ^ > The what ??? Too long; didn't read -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems *

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-23 Thread Paul Koning via cctalk
> On Dec 23, 2022, at 3:09 PM, Christian Corti via cctalk > wrote: > > On Fri, 23 Dec 2022, gordon+cct...@drogon.net wrote: >> dumb charger. Might be worth a watch, but the tl;dr seems to be that trickle >^ > > The what ??? That's

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-23 Thread Christian Corti via cctalk
On Fri, 23 Dec 2022, gordon+cct...@drogon.net wrote: dumb charger. Might be worth a watch, but the tl;dr seems to be that trickle ^ The what ??? Christian

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-23 Thread Gordon Henderson via cctalk
On Thu, 22 Dec 2022, Cedric Amand via cctalk wrote: Hey everyone, No - I won't ask if this is on topic or not :) I'm currently reparing an ALPS plotter ( a Tandy "ce 150" equivalent ) and it's not the first time I face the same problem ; how to replace NiCD batteries. In the past what I did

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Paul Koning via cctalk
> On Dec 22, 2022, at 6:30 PM, Will Cooke via cctalk > wrote: > > > >> On 12/22/2022 4:34 PM CST Chuck Guzis via cctalk >> wrote: > >> >> That's not to say that Li-ion cells are without their quirks. I >> recently almost discarded a AA-sized 14500 cell because the output >> voltage had

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Will Cooke via cctalk
> On 12/22/2022 4:34 PM CST Chuck Guzis via cctalk > wrote: > > That's not to say that Li-ion cells are without their quirks. I > recently almost discarded a AA-sized 14500 cell because the output > voltage had suddenly dropped to the point where none of my chargers > would even see it. So

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Chuck Guzis via cctalk
On 12/22/22 13:50, Paul Koning wrote: > Yes, that looks similar to what I read. One interesting point in the > discussion I saw is that it said slow charging is not recommended for > NiMH because the right way to detect end of charge is by voltage drop, > and that drop is even smaller if the

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Paul Koning via cctalk
> On Dec 22, 2022, at 4:30 PM, Chuck Guzis wrote: > > On 12/22/22 11:42, Paul Koning wrote: >> I just read the battery chapter of the ARRL Amateur Radio Handboo, which >> discusses this particular point at some length. >> Among many other points it says (a) you can trickle charge a NiCd but

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Chuck Guzis via cctalk
On 12/22/22 11:42, Paul Koning wrote: > I just read the battery chapter of the ARRL Amateur Radio Handboo, > which discusses this particular point at some length. > Among many other points it says (a) you can trickle charge a NiCd but not a > NiMH, and (b) NiMH requires a more complex charging

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Will Cooke via cctalk
> On 12/22/2022 2:33 PM CST Chuck Guzis via cctalk > wrote: > > > I haven't run across a single IC dedicated to the > process yet--I suspect there must be one out there somewhere. > > FWIW, > --Chuck There are quite a few. Mouser lists 278 that claim NiMh capability. All but 9 of

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Chuck Guzis via cctalk
On 12/22/22 11:42, Paul Koning wrote: > I just read the battery chapter of the ARRL Amateur Radio Handboo, which > discusses this particular point at some length. > > Among many other points it says (a) you can trickle charge a NiCd but not a > NiMH, and (b) NiMH requires a more complex charging

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Paul Koning via cctalk
> On Dec 22, 2022, at 11:49 AM, Chuck Guzis via cctalk > wrote: > > I can't speak with any authority on the NiMH vs. NiCd substitution, > except that I've replaced them on low-draw devices and used the same > charger. After 20 years of doing this, I can't claim to have destroyed > any NiMH,

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Sellam Abraham via cctalk
On Thu, Dec 22, 2022, 8:58 AM Chuck Guzis via cctalk wrote: > Why they're used in a non-rechargable application is anyone's > guess. > Probably because of the characteristic of their discharge in conjunction with the heating coil. Sellam >

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Chuck Guzis via cctalk
I can't speak with any authority on the NiMH vs. NiCd substitution, except that I've replaced them on low-draw devices and used the same charger.  After 20 years of doing this, I can't claim to have destroyed any NiMH, though I can certainly appreciate the self-limiting of overcharge on NiCd

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Will Cooke via cctalk
> On 12/22/2022 10:02 AM CST Cedric Amand via cctalk > wrote: > > > Hi Jim, Maybe this is specific to europe but NiCds are hard to come by here, > they are prohibited since 2008 And even more prohibited since 2017 ( they > also exclude medical equipment ) I used to source them in ex-ussr

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Cedric Amand via cctalk
Hi Jim, Maybe this is specific to europe but NiCds are hard to come by here, they are prohibited since 2008 And even more prohibited since 2017 ( they also exclude medical equipment ) I used to source them in ex-ussr countries but even there they are hard to come by nowadays, quite expensive,

[cctalk] Re: Replacing NiCd with NiMH in a pro way.

2022-12-22 Thread Jim Brain via cctalk
On 12/22/2022 4:08 AM, Cedric Amand via cctalk wrote: Hey everyone, No - I won't ask if this is on topic or not :) I'm currently reparing an ALPS plotter ( a Tandy "ce 150" equivalent ) and it's not the first time I face the same problem ; how to replace NiCD batteries. In the past what I did