08-07-2021, 08:18 AM | #1 |
Gone Wild
Join Date: Feb 2015
Location: Myrtle Beach, S.C.
Posts: 226
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Need new a BMS- Need some help
Have had a CHargery BMS for my setup and it has failed again.
Looking for some input on what to go with and what would be the easiest conversion from the chargery setup. Was looking at the Chinese BMS with Bluetooth that sergio used. has anyone had any issues with this or is it still a decent option? If so is there any reason I should go with the higher amp model or is the 20 amp adequate? Was also thinking about spending the extra $ and converting over to the Zeva. Except it looks like its on backorder. Dont really wont to be without a bms and longer than i have to Whats my best option right now to get running safely again |
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08-07-2021, 10:02 AM | #2 |
Gone Wild
Join Date: Apr 2020
Location: Hurricane, Utah
Posts: 2,792
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Re: Need new a BMS- Need some help
Search for PingEye3 posts; pretty sure there is a good one recently with a lot of good BMS info (including his thoughts on the Zeva).
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08-07-2021, 12:13 PM | #3 | |
Gone Wild
Join Date: Oct 2012
Location: Southwestern Pa.
Posts: 6,214
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Re: Need new a BMS- Need some help
Quote:
But in reading THIS post I don't see the substantive reason for "Toss the ZEVA in the trash" comment. I've been running my ZEVA since October of 2018 and have not had any issues with it. |
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08-07-2021, 12:21 PM | #4 | |
Gone Wild
Join Date: Sep 2014
Location: Orlando, FL
Posts: 1,308
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Re: Need new a BMS- Need some help
Quote:
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08-07-2021, 12:45 PM | #5 | |
Gone Wild
Join Date: Feb 2015
Location: Myrtle Beach, S.C.
Posts: 226
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Re: Need new a BMS- Need some help
Quote:
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08-07-2021, 01:13 PM | #6 |
Gone Wild
Join Date: Apr 2017
Location: SE TN
Posts: 2,226
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Re: Need new a BMS- Need some help
I used a Daly on my latest lithium build. It's not connected to monitor current. I only use it for over/under voltages, balancing and temp. I like it better than the Xiaoxiang. It also has a higher BT signal. I can now monitor my battery charging w/o having to get right next to them. And contrary to popular belief all of the Chinese goods are not junk. The only problems I've had are warranty questions. BTW you can get one on Amazon for about a $100.
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08-07-2021, 01:43 PM | #7 | |
Gone Wild
Join Date: Sep 2014
Location: Orlando, FL
Posts: 1,308
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Re: Need new a BMS- Need some help
Quote:
The 1st pic is of the BMS mounted in an aluminum box which I also got from same place. I have since purchased a 3D printer and designed my own box so I would not have to cut end plates for the connectors. Also use it to print the Leaf module pack terminal covers, charge receptacle plates, digital meter adapters when mounting rectangle meters in 2" round holes, etc 2nd pic shows the prep to the aluminum box, now no longer used. I've made so many packs that I seem to have stopped taking pictures, I don't have a pic of the 3D printed box, but it turned out great. You will notice two #10 wires soldered to the board for the B- and C- connection to the BMS. I cut one of each of them off and then splice a #12 to each one for pack connections. as only the charge current is passing thru the BMS. I am attaching two drawings used for this BMS. One is my standard drawing, the second is with Sergio's relay setup added to my drawing. Allowing you to wire it either way. Drawings are setup for 11x17 paper. You can read up on the Chinese BMS and Sergio mods on this link - https://www.buggiesgonewild.com/show...ght=sergio+bms BMS Link https://www.aliexpress.com/item/3284...ebe9e32eab62-0 And if you go with the BMS I use, PM me for a box to go with it. |
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08-07-2021, 03:21 PM | #8 | |
Gone Wild
Join Date: Oct 2012
Location: Southwestern Pa.
Posts: 6,214
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Re: Need new a BMS- Need some help
Quote:
I just don't know (maybe I didn't read the correct post?) the failure they have caused you. |
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08-07-2021, 06:22 PM | #9 | |
Gone Wild
Join Date: Dec 2020
Location: Melbourne, Australia
Posts: 1,943
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Re: Need new a BMS- Need some help
I use only “Chinese” BMS’s, not only for cart use but for all my lithium builds. I’ve built tiny two cell 2Ah packs (with $2.00 BMS’s) and large 42 cell 120Ah packs, always with “Chinese” BMS’s.
I’ve never had one fail, NEVER. Now, I’m not saying that they don’t fail, any piece of electronics can fail, regardless of how expensive it is or where it was made. When it comes to cart use, as long as you don’t try to pass motor current through the It, the Chinese BMS will be just as reliable as anything else you purchase, especially JBD, who are an OEM manufacturer for some name brand BMS’s. Quote:
Cheers Pat. |
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08-07-2021, 09:39 PM | #10 | |
Gone Wild
Join Date: Feb 2015
Location: Myrtle Beach, S.C.
Posts: 226
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Re: Need new a BMS- Need some help
Quote:
thank you very much for the detailed write up!. I wills end you a PM on the box. Will probably go ahead and order this BMS . Thanks again for all the help |
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