Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
14s BMS on a 13s battery, can I?
#1
Hi, I ordered this bms from china: 

https://www.ebay.co.uk/itm/48V-13S-45A-E...2749.l2649

The thing is, instead of sending me a 13s bms they sent me a 14s. Can I still use the bms by just leaving the 14th connector disconnected?

I would make a 14s battery instead but I already have a charger for 13s.
Reply
#2
Send us a pic of what you actually got.
Reply
#3




[Image: 27711315_1943576912336612_1316176878_o.j...e=5A75D054]
[Image: 27659079_1943576942336609_126117384_n.jp...e=5A763489]
Reply
#4
(02-01-2018, 08:27 PM)António Pereira Wrote: Hi, I ordered this bms from china: 

https://www.ebay.co.uk/itm/48V-13S-45A-E...2749.l2649

The thing is, instead of sending me a 13s bms they sent me a 14s. Can I still use the bms by just leaving the 14th connector disconnected?

I would make a 14s battery instead but I already have a charger for 13s.

The ebay listing does say it's a 13s bms?
                                                Choose LiFe  Wink

                      May all your batteries be fully charged and perfectly balanced  Cool
Reply
#5
(02-01-2018, 09:16 PM)Wattsup Wrote:
(02-01-2018, 08:27 PM)António Pereira Wrote: Hi, I ordered this bms from china: 

https://www.ebay.co.uk/itm/48V-13S-45A-E...2749.l2649

The thing is, instead of sending me a 13s bms they sent me a 14s. Can I still use the bms by just leaving the 14th connector disconnected?

I would make a 14s battery instead but I already have a charger for 13s.

The ebay listing does say it's a 13s bms?
Yes, the listing does say it's a 13s board but I got a 14 instead.
Reply
#6
It might work but it may be looking for higher voltages. IE it may shutdown when still not empty or keep charging over the max 54.6V I would contact the seller about this
Reply
#7
(02-01-2018, 09:26 PM)António Pereira Wrote:
(02-01-2018, 09:16 PM)Wattsup Wrote:
(02-01-2018, 08:27 PM)António Pereira Wrote: Hi, I ordered this bms from china: 

https://www.ebay.co.uk/itm/48V-13S-45A-E...2749.l2649

The thing is, instead of sending me a 13s bms they sent me a 14s. Can I still use the bms by just leaving the 14th connector disconnected?

I would make a 14s battery instead but I already have a charger for 13s.

The ebay listing does say it's a 13s bms?
Yes, the listing does say it's a 13s board but I got a 14 instead.

Sorry I didn't read your post properly   Shy
                                                Choose LiFe  Wink

                      May all your batteries be fully charged and perfectly balanced  Cool
Reply
#8
(02-01-2018, 09:45 PM)jdeadman Wrote: It might work but it may be looking for higher voltages.   IE it may shutdown when still not empty or keep charging over the max 54.6V   I would contact the seller about this

I have but comunication has been dreadful, and he is only replying one message per day...
Reply
#9
Some bms's will work with different Xs configurations than max. This is accomplished by shorting out two neighboring connections. So, it's possible to short out wire #13 and #14 together and that tells the bms to keep going. I'm not sure as I don't know the documentation for that board.
Some post the shorting pattern for taking a 14s and changing to a 9s. They'd short wires #2 and #3, #4 and #5, #7 and #9, #12 and #13 to go from 14s to 9s, for example.
The bms is looking for voltage on all wires, and I suppose this kinda "tricks" the bms into thinking there are 14 there even though there's not.
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
Certified 18650 Cell Reclamation Technician

Please come join in general chit-chat and randomness at Discord Chat (channels: general, 3d-printing, linux&coding, 18650, humor, ...)
(this chat is not directly affiliated with SecondLifeStorage; VALID email req'd)
Reply
#10
Well, the seller said they asked the supplier and they said it can be used on a 13s battery they say simply to not connect the 14th wire. I'll have to give it a go once I make the battery.
Reply


Who read this thread?
99 User(s) read this thread:
EnergyDoc (03-22-2018, 03:34 PM), Truth (04-06-2019, 06:11 AM), runsnbunsn (07-21-2019, 04:34 PM), singlecell (02-26-2019, 06:47 AM), RayGenWurm (01-16-2019, 11:51 AM), harddinero (12-13-2018, 10:29 PM), Wolf (02-25-2019, 12:51 PM), camthecam (02-26-2019, 11:09 PM), Carbonatedmilkuht (11-12-2018, 10:28 AM), Generic (02-25-2019, 07:44 AM), rettore (02-28-2019, 11:41 AM), kwabdul (02-26-2019, 02:01 PM), olde guido (08-24-2018, 07:53 AM), kozi1982 (03-31-2018, 06:30 PM), Robert Billings (04-10-2018, 12:53 AM), said (05-11-2018, 03:30 PM), cadric (03-11-2019, 06:48 PM), Cherry67 (08-05-2019, 07:28 PM), jakonthestak (06-16-2018, 08:33 PM), bukvaahmed@gmail.com (02-25-2019, 09:35 AM), EP3R-T (06-17-2018, 09:17 PM), egonb (02-27-2019, 12:43 PM), emuland-metroman (07-19-2019, 08:54 PM), polo78 (11-24-2018, 09:46 AM), PaulDane (01-29-2019, 08:00 PM), ajw22 (07-19-2019, 07:43 PM), 100kwh-hunter (08-03-2019, 03:12 PM), ganushak (03-09-2019, 04:01 PM), juanjo57 (Today, 09:04 AM), sgrevskott (03-24-2019, 10:20 AM), EV Works (04-09-2019, 08:56 PM), DogDipstick (08-02-2019, 05:27 PM), A713083 (04-30-2019, 07:14 AM), xahmedxsa (06-21-2019, 03:23 AM), silviutu (06-20-2019, 10:55 PM), Jonisingt35r (07-23-2019, 12:33 PM), EmilinK (02-26-2019, 02:04 PM), BDFIX (02-25-2019, 10:36 AM), lloulou11 (03-07-2019, 11:55 PM), selinofell197 (05-21-2019, 06:54 PM), LEDSchlucker (02-25-2019, 05:30 PM), tsmurray (03-14-2019, 08:19 PM), Church1182 (02-25-2019, 06:00 PM), fredd33 (04-13-2019, 09:10 PM), Codemonkey76 (03-20-2019, 03:21 AM), Leafnut (03-05-2019, 08:57 PM), MilkMan (02-26-2019, 02:21 PM), ViES (04-15-2019, 12:22 AM), 3xtr3m3 (08-10-2019, 05:34 PM), John Southern (04-18-2018, 10:37 AM), daromer (07-19-2019, 05:20 PM), Stefaan De Ridder (02-25-2019, 12:06 PM), Chiptosser (02-02-2018, 07:30 AM), Michel Daggelinckx (02-09-2018, 04:24 AM), BlueSwordM (02-15-2018, 03:28 AM), Eric Koshinsky (03-02-2018, 04:34 AM), Shade (02-19-2018, 08:27 AM), KtB (09-07-2018, 12:30 PM), ivnz (02-18-2018, 08:44 PM), Geek (02-26-2019, 01:10 AM), TAGG (02-19-2018, 10:49 PM), watts-on (02-25-2019, 09:54 AM), typ49 (02-19-2018, 10:04 AM), Sean (07-19-2019, 05:06 PM), mike (02-01-2018, 08:52 PM), station240 (02-25-2019, 08:32 AM), Majorphill (02-20-2018, 01:18 AM), Korishan (07-20-2019, 11:29 PM), Batrium (02-19-2018, 02:19 PM), Wattsup (02-18-2018, 10:18 PM), jdeadman (02-18-2018, 02:02 PM), wim (02-18-2018, 03:23 PM), melsom (03-28-2019, 02:38 PM), floydR (02-02-2018, 11:15 PM), grgdgreek (02-25-2018, 10:58 AM), DarkRaven (02-18-2018, 09:02 PM), benwilliam (02-05-2018, 08:43 AM), nrm21 (03-04-2018, 08:01 PM), Ahmed_Ali (07-17-2019, 11:39 AM), Farends (03-01-2018, 05:10 PM), António Pereira (02-19-2018, 03:49 PM), kanchana (02-26-2018, 02:59 PM), Eratigena (08-04-2019, 10:33 AM), babish (02-10-2018, 05:33 PM), DK100 (02-18-2018, 02:33 PM), noaano (02-19-2018, 07:30 PM), drchips (02-18-2018, 07:14 PM), brwainer (02-18-2018, 06:22 PM), Oderus420 (02-02-2018, 12:37 PM), Oz18650 (07-19-2019, 11:05 PM), neurocis (08-14-2018, 04:35 PM), shonalex (07-27-2018, 08:04 PM), Carlo Bravo (07-21-2019, 08:03 AM), Solexx X (02-18-2018, 09:44 PM), rdh824 (02-18-2018, 06:50 PM), cnous3 (07-23-2019, 01:50 PM), Detritalgeo (02-02-2018, 10:51 PM), Photovoltaik.blog (04-24-2018, 07:15 PM), Crimp Daddy (02-25-2019, 04:06 PM)

Forum Jump:


Users browsing this thread: 1 Guest(s)