- Overcharging the battery - 13 Updates
- OT: Davtrend CL-19 Linear PSU diagram? - 1 Update
| Mike Coon <gravity@mjcoon.plus.com>: Jun 10 06:04PM +0100 In article <cbc2cgh1ume8gbrjpq2f9ccnkts13jjn9e@4ax.com>, NONONOmisc07 @fmguy.com says... > How come my Sandisk Clip Sport says one cannot ovrcharge the battery, > but none of my smartphones have ever said that? Conversely my smartphone (Moto G3) instructions specifically did say that. Wrongly, though: the battery bulged and burst the screen out of the casing. |
| legg <legg@nospam.magma.ca>: Jun 10 02:24PM -0400 On Wed, 09 Jun 2021 17:25:55 -0400, micky <NONONOmisc07@fmguy.com> wrote: >How come my Sandisk Clip Sport says one cannot ovrcharge the battery, >but none of my smartphones have ever said that? It's not a smart phone and deals only with one Li-Ion cell battery. Protection electronics and charge limiters for that purpose are commodities. I've never had a small MP3 player with battery issues. They're claiming something that all previous competition took for granted, to increase meaningless advertizing content. Your smart phone has a more advanced and more complicated battery. New developments or manufacturing changes will have issues without a strict discipline that is often not present in that competitive arena. RL |
| Ralph Mowery <rmowery42@charter.net>: Jun 10 02:33PM -0400 In article <MPG.3b2c5672294a73b410c@news.plus.net>, gravity@mjcoon.plus.com says... > Conversely my smartphone (Moto G3) instructions specifically did say > that. Wrongly, though: the battery bulged and burst the screen out of > the casing. Guess that I have been lucky. I only use my cell phone when away from the house. At hone it stays on the charger all the time, maybe several days. I have done this to a flip phone and 2 smart phones and so far no problems. |
| Joerg Lorenz <hugybear@gmx.ch>: Jun 10 10:19PM +0200 Am 10.06.21 um 20:33 schrieb Ralph Mowery: > the house. At hone it stays on the charger all the time, maybe several > days. I have done this to a flip phone and 2 smart phones and so far no > problems. With Li-Ion batteries there are no problems anyway and the rest is done by the electronics. Care free I would say. |
| AJL <noemail@none.com>: Jun 10 01:34PM -0700 On 6/10/2021 10:04 AM, Mike Coon wrote: > Conversely my smartphone (Moto G3) instructions specifically did say > that. Wrongly, though: the battery bulged and burst the screen out > of the casing. Might not have been the charging that was at fault. I had a phone's battery swell and pop open the case while off the charger and at less than full charge. I just replaced the battery and the phone never had another problem until I traded it for a new one well over a year later. Bad batteries happen... |
| Mike Coon <gravity@mjcoon.plus.com>: Jun 10 10:54PM +0100 In article <s9ts4j$5lr$1@dont-email.me>, hugybear@gmx.ch says... > > problems. > With Li-Ion batteries there are no problems anyway and the rest is done > by the electronics. Care free I would say. What "no problems"? Like the well-publicised fires, recalls etc? Airlines seem to care rather a lot... |
| micky <NONONOmisc07@fmguy.com>: Jun 11 06:35AM -0400 In comp.mobile.android, on Thu, 10 Jun 2021 13:34:16 -0700, AJL >than full charge. I just replaced the battery and the phone never had >another problem until I traded it for a new one well over a year later. >Bad batteries happen... There are no bad batteries. Only batteries that do bad things. Like children! |
| Joerg Lorenz <hugybear@gmx.ch>: Jun 11 12:53PM +0200 Am 10.06.21 um 23:54 schrieb Mike Coon: >> by the electronics. Care free I would say. > What "no problems"? Like the well-publicised fires, recalls etc? > Airlines seem to care rather a lot... They don't. The real problem are the batteries of the shitty B-787. |
| Joerg Lorenz <hugybear@gmx.ch>: Jun 11 12:55PM +0200 Am 10.06.21 um 22:34 schrieb AJL: > than full charge. I just replaced the battery and the phone never had > another problem until I traded it for a new one well over a year later. > Bad batteries happen... That sounds like an ultra cheap non-device-manufacturer-standard replacement battery. |
| Mike Coon <gravity@mjcoon.plus.com>: Jun 11 02:08PM +0100 In article <s9vfah$663$3@dont-email.me>, hugybear@gmx.ch says... > > Airlines seem to care rather a lot... > They don't. > The real problem are the batteries of the shitty B-787. Have you not read the strictures applied to how you transport your gadgets' batteries? Admittedly the caring is about their aeroplanes; they like the batteries to be close to the passenger, to act as a fire detector... |
| rbowman <bowman@montana.com>: Jun 11 08:05AM -0600 On 06/11/2021 04:55 AM, Joerg Lorenz wrote: >> Bad batteries happen... > That sounds like an ultra cheap non-device-manufacturer-standard > replacement battery. I've got a Novatel MiFi and their batteries are prone to pregnancy. They tell you to not leave it plugged in but I use it for internet access 24/7. One of our clients send in a laptop for testing with our products and included the same model. It arrived without the back cover because of the bulging. |
| Joerg Lorenz <hugybear@gmx.ch>: Jun 11 04:12PM +0200 Am 11.06.21 um 16:05 schrieb rbowman: > One of our clients send in a laptop for testing with our products and > included the same model. It arrived without the back cover because of > the bulging. People using such crap are irresponsible. *EOD* for me. |
| AJL <noemail@none.com>: Jun 11 08:50AM -0700 On 6/11/2021 3:55 AM, Joerg Lorenz wrote: >> one well over a year later. Bad batteries happen... > That sounds like an ultra cheap non-device-manufacturer-standard > replacement battery. It was the original battery that came in a new iPhone. The phone was around a year old when the failure occurred. I replaced it with your well described ultra cheap (US$30 including tools) non-device-manufacturer-standard replacement battery. Fortunately that battery worked fine for the following year+ until the phone was finally replaced. |
| T i m <news@spaced.me.uk>: Jun 11 02:08PM +0100 Hi, I marked it OT as nothing needs repairing as such ... Having a tidy up in the study yesterday I took the top of my old Davtrend 13.5V 12A 'shack' PSU (used to power my Packet Radio station) and gave it a gentle dust out and felt I'd like a circuit diagram for it. It's based around an LM324 so one could probably work out what was needed should it go wrong. According to the signed sticker inside it was built in 1991 so it's about 30 years old and came in very handy recently when the SMPSU failed on my 3D printer and it was putting 10A into the printers heated bed for a few hours. ;-) Cheers, T i m |
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