Beginners Guide to Processing 18650 Cells | Cell Database


Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Electric Kid four wheeler battery
#11
https://www.youtube.com/watch?v=Q2w5Ka2oNv8
This dude went into the nitty gritty of the pack.

Looks like nominal charge per cell is 2150
nominal voltage is 3.65 v
constant current is 1075ma
contant current 4.2 v
end condition(cutoff) is 2.75 ) whats that ?????
max charge 4.2 V
max discharge current 10A
Reply


#12
End condition(cutoff) is when the bms will actually shut down power going out from the cells. Keeps them from being depleted too far. 40+mins is a loooong video review on these. Wow
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
Dollar Shave Club. Best Razor I've ever used
Certified 18650 Cell Reclamation Technician
Reply
#13
Every day i learn something is a good day.
Yeah . That guy had a lotta time to spare. Ordering 3 packs of these saturday
Reply
#14
This is how my pack for my 4wheeler looks like to the kids. Its 24V though:


Follow me! >> YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcomming: 14S 18650~30kWh | Automatic trip breakers, and alot more
Reply
#15
I also 18650fied a 24V scooter, used 7s5p to make it even a little faster Big Grin . But I also changed the speed controller and added a 20A bms (motor has 500W, looks the same as in your quad video, Daniel) to the pack for more safety. And I used cells from an ebike (3500mAh) because of the higher discharge rate. Now it runs like hell for more than 2 hours... Cool 

Have sun and always wear a helmet Wink

permanently on battery from:
- 2017/05/20 - 2017/07/01
- 2017/07/02 - 2017/07/25
- 2017/07/26 - 2017/08/16
- 2017/08/17 - 2017/09/24

- 2017/09/26 - ?
What's left: my current grid consumption
Reply
#16
That may be a project for the future . For now i just want extended range . Speed doesnt really matter . (yet. ) I do plan to build an electric motorcycle for my self though to go with the bike collection. But thats another day and lot more dollars .
Reply
#17
What battery protection are you guys using? I'm looking for something that will cut output at 3.2v or thereabouts.
Reply
#18
No protection on my pack more than a LOUD beeper for rc. I have no built in BMS since i charge it with a RC charger.
Follow me! >> YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcomming: 14S 18650~30kWh | Automatic trip breakers, and alot more
Reply
#19
I use a cheap bms from China, cutoff is around 2.4V, as far as I remember... bought it from Banggood...

permanently on battery from:
- 2017/05/20 - 2017/07/01
- 2017/07/02 - 2017/07/25
- 2017/07/26 - 2017/08/16
- 2017/08/17 - 2017/09/24

- 2017/09/26 - ?
What's left: my current grid consumption
Reply
#20
Ordered 2 of the packs looks like they should be in sept 12th.
Reply


Who read this thread?
81 User(s) read this thread:
slimf (Today, 11:28 AM), Ivo Staelens (Today, 10:12 AM), Mrsmith (09-07-2017, 10:51 AM), savasava (08-31-2017, 11:45 AM), fabioelsabio (Today, 09:26 AM), chris89861 (08-30-2017, 01:49 PM), NZ55 (09-06-2017, 04:57 AM), floydR (08-29-2017, 11:55 PM), SimonW (Today, 03:20 AM), WildCard_25 (09-12-2017, 11:18 AM), SWEwall (08-28-2017, 08:14 AM), ivnz (Today, 06:04 AM), Chris Davis (09-15-2017, 03:41 AM), nokiasixteth (Today, 01:33 AM), Greg (08-30-2017, 06:42 AM), Geek (09-12-2017, 03:18 AM), mike98 (08-28-2017, 11:18 PM), Dave Tucker II (Today, 04:49 AM), jrandomb (08-29-2017, 01:36 AM), Moserm11 (08-28-2017, 02:34 AM), sinusx (08-27-2017, 10:59 PM), KallieMarie (09-09-2017, 10:47 AM), hopper_74 (09-09-2017, 06:03 PM), zag2me (Today, 10:25 AM), dougal (Today, 08:39 AM), Apotieri (09-14-2017, 08:47 AM), davidpesce (09-16-2017, 11:35 AM), mormor1971 (Today, 09:17 AM), ahillqck (Yesterday, 08:27 PM), Jordi Arias Santaella (09-08-2017, 06:26 AM), frenchclem17 (09-15-2017, 07:03 AM), Valerie (08-28-2017, 09:33 AM), jujua (08-28-2017, 10:23 PM), mimail (08-29-2017, 12:57 AM), atlmapper (08-30-2017, 01:46 PM), Thie (08-30-2017, 07:16 PM), neemo (09-02-2017, 10:23 AM), Gavin Beverley (09-02-2017, 11:59 AM), Gerard Achternaam (Today, 10:06 AM), vossman77 (08-28-2017, 10:35 PM), paraskevas (09-06-2017, 04:10 PM), netmonk (08-29-2017, 09:57 AM), Wattsup (08-27-2017, 09:53 PM), Tristan Timmer (08-28-2017, 01:47 AM), egam (08-28-2017, 01:26 AM), Alec_J (08-29-2017, 12:54 AM), flight4900 (09-01-2017, 11:27 AM), jdeadman (Today, 03:02 AM), crud (08-31-2017, 11:11 AM), wim (09-06-2017, 04:52 PM), Darmok (09-24-2017, 12:48 AM), FireFrog (08-29-2017, 09:40 PM), Chickey (09-13-2017, 10:03 AM), daromer (08-30-2017, 09:29 AM), mike (Today, 12:03 PM), owitte (09-06-2017, 08:45 AM), VdVoort4 (08-30-2017, 12:29 PM), coolfx (08-30-2017, 01:05 PM), Korishan (Today, 10:41 AM), PAF (09-06-2017, 06:30 PM), frnandu (Today, 01:06 PM), The-J-Man (08-28-2017, 06:22 PM), silverse2m6 (08-28-2017, 09:47 AM), Stefaan De Ridder (09-06-2017, 05:08 AM), zimo (08-28-2017, 12:40 PM), Chiptosser (08-30-2017, 01:08 PM), Dennis Van Hoek (09-06-2017, 03:18 PM), N00bPwr (Today, 09:25 AM), KaminoReal (09-16-2017, 05:33 PM), Robert Crawley (08-30-2017, 12:46 PM), IronSky (08-27-2017, 11:47 PM), autobd (08-29-2017, 12:57 PM), Jeremy Choy (08-28-2017, 11:12 PM), Abarth595 (08-29-2017, 10:20 AM), tbostjan (08-30-2017, 01:01 PM), watts-on (Today, 01:08 PM), Dan Lim (08-30-2017, 02:29 AM), arierep60 (Today, 09:13 AM), Hanssing (08-30-2017, 04:17 PM), MetalFang (09-19-2017, 08:44 AM), hbpowerwall (08-31-2017, 03:14 AM)

Forum Jump:


Users browsing this thread: 1 Guest(s)