10-28-2019, 10:34 PM | #101 | |
Getting Wild
Join Date: Nov 2018
Posts: 92
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
Quote:
Underlying hardware dictates wiring. Two vendors can pick any arbitrary way to implement their BMS. Now looking at two charts, the only difference I see in fact Zeva requires a jumper to pin 16 from the last cell's pin. That's probably because pin 16 also supplies pack voltage to power the BMS. No such jumper on Chargery, so it powers itself in a different way. |
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10-29-2019, 08:59 AM | #102 | |
Just Gone
Join Date: Sep 2015
Location: North Carolina
Posts: 3,549
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
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11-01-2019, 06:50 PM | #103 |
Not Yet Wild
Join Date: Aug 2019
Posts: 6
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
Great post!! Thanks for all the details! Anything you would have changed at this point?
Is EV Supply still the best place for the leaf batteries? Sent from my iPhone using Tapatalk |
11-03-2019, 06:13 PM | #104 | |
Gone Wild
Join Date: Nov 2018
Location: Lady Lake, FL.
Posts: 457
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
Quote:
The EV Battery Center is no longer selling used batteries. Most people seem to be getting their modules from Ebay these days. I initially went with the Zeva BMS because that is what many of the guys used in their builds for the previous couple of years. It was a reliable system that I seen installed, met all the requirements, good customer support and it had a cool monitor. The only real downside was the price... My wife "owed" me at the time so I paid and got the cool monitor. There are cheaper BMS' available from China if you're willing to do your own research to ensure that it meets your needs safely. The same goes true for the Gigavac for HV/LV disconnects. In my next pack build I'll probably use a MZJ solenoid. I found that my daily driving was typically using only 10-20% and I would only dip into the pac to 80% a couple of times a month. With those driving habits to reduce stress on the cells I adjusted the charging voltage from 58.4 to 57v and the upper BMS settings to match. I also made more of the battery available at the bottom for us to use once we got comfortable with the discharge "cliff". I used to tell my wife to plug it in at 52v just to be safe now she has until 50v. Have fun and be safe. Sent from my SM-G960U using Tapatalk |
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11-04-2019, 12:24 PM | #105 |
Gone Wild
Join Date: Aug 2018
Location: Orange County, California
Posts: 279
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
Thanks MC .... Great write-up and Great Information.
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02-08-2020, 02:54 PM | #106 |
Not Yet Wild
Join Date: Dec 2019
Posts: 13
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
Awesome build. Do you have pictures of the in cart, pack install? I'm gathering research for the same pack build for my Carryall 6. Thanks.
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02-08-2020, 05:32 PM | #107 | |
Gone Wild
Join Date: Nov 2018
Location: Lady Lake, FL.
Posts: 457
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
Quote:
https://r.tapatalk.com/shareLink/top...ink_source=app Sent from my SM-G960U using Tapatalk |
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02-08-2020, 07:13 PM | #108 | |
Not Yet Wild
Join Date: Dec 2019
Posts: 13
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
Quote:
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02-09-2020, 08:09 AM | #109 | |
Gone Wild
Join Date: Nov 2018
Location: Lady Lake, FL.
Posts: 457
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
Quote:
http://www.buggiesgonewild.com/lithi...inese-bms.html I'm using a simular BMS in my current build. The $80 Bluetooth Smart BMS provides balancing and Overcharging (HV) protection but doesn't have a (LV) disconnect (Gigavac). In lieu of the Gigavac or Sergio's relay shut off to protect the battery against over discharging I'm installing a simple low voltage alarm which will start squealing at a preset voltage and not stop until the battery is charging. The Zeva and Chargery are both proving to be good systems but are quite pricey. Another member on BGW has put together more than 25 of these Leaf packs for friends of his and he used 2 Zeva BMSs early on but now uses these generic BMS exclusively without any issues. I'm not sure of the specifics for your cart but it really shouldn't be too difficult as far as the actual battery swap goes. In most cases the B- from your new battery goes to the controller B- and the B+ goes to the solenoid, just as before. Sometimes you need to bypass a plug-in safety switch or bypass the OBC, but there's a lot of help here on BGW that will know your cart and can help with your specific needs. Sent from my SM-G960U using Tapatalk |
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02-09-2020, 11:36 AM | #110 | |
Not Yet Wild
Join Date: Dec 2019
Posts: 13
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Re: DIY 101 - 14 cell Nissan Leaf lithium pack
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