Notice To Unregistered Users: By visiting this forum, you are automatically agreeing to the terms and conditions set forth in our Safety Notice & User Agreement. All electrical work shall be completed by a qualified and licensed electrician. Admins, moderators, and members do not accept any liability for the information posted here. Please make sure to read the Safety Notice & User Agreement for the full disclosure. To remove this message, please register for an account.
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
First repair project
#31
(10 hours ago)DarkRaven Wrote: 5.1V can't be right. 4.2V is the end of charge voltage per cell. If it is then the Hoover charger would have nothing to charge. Probably more like 4.1V?

Maybe my DMM is not accurate...but it read over 5v
Reply
#32
If it is correct and it is really over 4.2V per cell, over 5V even, you will have damaged the cells because they have been overcharged. This is not only bad for the cells it's also potentially dangerous. Modern and high quality cells luckily aren't as volatile as lithium cells used to be. You could have ended up with a fire and/or an explosion.
Reply
#33
(9 hours ago)DarkRaven Wrote: If it is correct and it is really over 4.2V per cell, over 5V even, you will have damaged the cells because they have been overcharged. This is not only bad for the cells it's also potentially dangerous. Modern and high quality cells luckily aren't as volatile as lithium cells used to be. You could have ended up with a fire and/or an explosion.

Thanks
well i don't think the controller would have over charged, as the power bank cells are 3.7v.

I just metered the cells from the power bank and they are reading 5.7v...
Took out my other DMM and reads 3.8v.

I'll swap the battery in the DDM

We just used the vacuum again, charger took 3hrs to charge - seems to be back in action  Big Grin
Reply


Who read this thread?
57 User(s) read this thread:
Robrecht (08-12-2018, 07:12 PM), Gregor Scott (08-10-2018, 08:13 PM), michaell (08-13-2018, 06:37 AM), blackrock (08-13-2018, 06:41 PM), barias (08-11-2018, 02:52 AM), w0067814 (08-15-2018, 10:20 AM), Katarn_89 (08-12-2018, 02:06 PM), Jim Jr. (Today, 12:34 AM), Riplash (Yesterday, 12:11 AM), Sholphin02 (08-16-2018, 03:18 AM), Cherry67 (Yesterday, 10:56 AM), Bubba (08-16-2018, 09:05 PM), solar_18650 (08-11-2018, 10:05 PM), Dovespark (08-13-2018, 10:10 AM), Hans Tuchel (08-10-2018, 04:40 AM), lags99 (08-11-2018, 01:46 AM), Desoxyribose (Yesterday, 03:11 PM), micco (Today, 12:08 AM), BatteryBuddha (08-13-2018, 04:23 PM), Andrew_art50 (08-11-2018, 04:58 PM), N.J (08-12-2018, 10:58 PM), rgr (08-14-2018, 10:31 PM), Charus (08-17-2018, 12:19 PM), yoeri_w (08-10-2018, 01:10 AM), lobolobo (08-16-2018, 05:45 AM), Natzimus (08-12-2018, 12:55 PM), TheEngineared (08-16-2018, 02:31 PM), Ibiza (Yesterday, 09:37 PM), Redpacket (08-11-2018, 07:40 AM), jonyjoe505 (08-15-2018, 02:13 AM), floydR (Yesterday, 02:56 PM), Geek (08-16-2018, 05:14 AM), idiomatically (08-09-2018, 04:23 AM), jesusangel (08-10-2018, 05:33 PM), watts-on (Yesterday, 10:33 PM), wim (08-10-2018, 07:32 AM), jdeadman (08-16-2018, 12:01 PM), PAF (Yesterday, 10:12 PM), Korishan (Yesterday, 03:52 PM), Majorphill (08-15-2018, 12:44 PM), mike (Yesterday, 11:48 AM), daromer (Yesterday, 09:49 AM), DarkRaven (Yesterday, 09:30 PM), ChrisD5710 (08-12-2018, 08:25 PM), rodagaster (Yesterday, 04:43 AM), John Allen (08-15-2018, 06:03 AM), Chablis_m (08-10-2018, 08:02 PM), gregoinc (08-11-2018, 05:14 AM), brwainer (Yesterday, 11:16 PM), Jason Morris (08-16-2018, 06:43 PM), BaronVonChickenPants (08-11-2018, 11:45 AM), djuro (08-11-2018, 09:15 AM), Charly144 (08-13-2018, 08:46 AM), CarelHassink (08-13-2018, 07:49 AM), joel0v3sgames (08-09-2018, 09:31 AM), cristof (08-10-2018, 05:55 PM), hbpowerwall (08-13-2018, 02:03 AM)

Forum Jump:


Users browsing this thread: 1 Guest(s)