# Lithium Cells in BMS disappeared, no Power **URL:** \ **Category:** GEM Forum\ **Created:** [July 16, 2024, 12:04am UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085 "2024-07-16T00:04:23Z")\ **Posts on this page:** 13\ **Page:** 2
**Author:** ![AssyRequired](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/assyrequired/32/7621_2.png) [@AssyRequired](https://community.electricforum.com/u/AssyRequired)\ **Post date:** [July 27, 2024, 1:49am UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/21 "2024-07-27T01:49:33Z")
I think I killed him. He hasn’t been seen in 3 days? I originally had instructions typed out all working from the little white plug and thought better of this and did not post. I then rewrote so that black meter probe is attached to battery post at the blue wire connection instead. I may not have been clear enough? ---
**Author:** ![djgabriel2004](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/djgabriel2004/32/12304_2.png) [@djgabriel2004](https://community.electricforum.com/u/djgabriel2004)\ **Post date:** [July 27, 2024, 7:12am UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/22 "2024-07-27T07:12:06Z")
> [@AssyRequired](#): > > Orient the header /collector Yes you were, I was only remarking that part because I was the one that used to test the pins with both probes in the connector and… Ive learned the hard way ---
**Author:** ![EOppegaard](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/eoppegaard/32/7550_2.png) [@EOppegaard](https://community.electricforum.com/u/EOppegaard)\ **Post date:** [August 15, 2024, 7:45pm UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/23 "2024-08-15T19:45:32Z")
I’m alive @AssyRequired . Sorry for the extreme delay here, life got in the way a bit. | Pin | Voltage | | --- | --- | | 0 | | | 1 | 3.963 | | 2 | 7.92 | | 3 | 11.89 | | 4 | 15.85 | | 5 | 19.80 | | 6 | 23.76 | | 7 | 27.71 | | 8 | 31.47 | | 9 | 35.62 | | 10 | 39.38 | | 11 | 43.4 | | 12 | 47.4 | | 13 | 51.4 | | 14 | 55.3 | | 15 | 59.3 | | 16 | 63.2 | | 17 | 67.2 | | 18 | 71.1 | | 19 | 75.1 | | 20 | 79.1 | | 21 | 83.0 | | 22 | 87.0 | | 23 | 25.6 | | 24 | 27 | | 25 | 87.0 | | | | ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [August 17, 2024, 2:01pm UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/24 "2024-08-17T14:01:22Z")
its a 22s battery so 23 and 24 aren’t used. The rest look good. Looks like you just need a new bms. Get the one for 24s not the 20s one ---
**Author:** ![EOppegaard](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/eoppegaard/32/7550_2.png) [@EOppegaard](https://community.electricforum.com/u/EOppegaard)\ **Post date:** [August 17, 2024, 3:43pm UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/25 "2024-08-17T15:43:52Z")
Thank you @LithiumGods ! Is this the correct one? > **[JKBMS B2A24S20P 7S-24S Active Balance BMS Balance Current 2A Continuous...](https://jikongbms.com/product/jkbms-b2a24s20p-7s-24s-active-balance-bms-balance-current-2a-continuous-current-200a-lifepo4-li-ion-lto-battery/)** ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [August 17, 2024, 3:55pm UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/26 "2024-08-17T15:55:25Z")
yes that will work aaaaaaaaaaaaaaa ---
**Author:** ![EOppegaard](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/eoppegaard/32/7550_2.png) [@EOppegaard](https://community.electricforum.com/u/EOppegaard)\ **Post date:** [August 18, 2024, 6:28am UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/27 "2024-08-18T06:28:53Z")
Thank you. I have ordered a replacement from the link referenced. Hopefully there is a way to transfer configuration from one device to another. ---
**Author:** ![EOppegaard](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/eoppegaard/32/7550_2.png) [@EOppegaard](https://community.electricforum.com/u/EOppegaard)\ **Post date:** [August 26, 2024, 3:19am UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/28 "2024-08-26T03:19:40Z")
@LithiumGods and @AssyRequired thank you for all the help. The replacement BMS should be here shortly, is there a way to transfer the configuration over from one BMS to the other? Or should I start trying to take screenshots of everything now to get to to match up? ---
**Author:** ![AssyRequired](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/assyrequired/32/7621_2.png) [@AssyRequired](https://community.electricforum.com/u/AssyRequired)\ **Post date:** [August 26, 2024, 3:27am UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/29 "2024-08-26T03:27:14Z")
Screen shots of your present settings is always a good idea. Start with basic Lipo settings and custom tune from there. Settings page with Adv tab open, One/two pages are all you need. ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [August 26, 2024, 9:12am UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/30 "2024-08-26T09:12:38Z")
With your battery, start with the LI-ion default and build off that. Feel free to call me if you get stuck. You bought the battery from me so I have all the settings. ---
**Author:** ![EOppegaard](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/eoppegaard/32/7550_2.png) [@EOppegaard](https://community.electricforum.com/u/EOppegaard)\ **Post date:** [September 1, 2024, 9:35pm UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/31 "2024-09-01T21:35:04Z")
@LithiumGods so you did a hell of a good job making up the bus bar that connects the negative from the battery to the BMS, but I don’t think I have the skill/tools to remake it. The BMS uses two 7AWG cables, which, if my math is right, comes to an effective 4AWG connection. If I take 2AWG cable that I have on hand, crimp an eyelet on one end to connect to the battery, and then a butt splice on the other to both of the 7AWG wires from the BMS, then solder them for good measure, would this work? Not sure if I am over or under thinking this. ---
**Author:** ![AssyRequired](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/assyrequired/32/7621_2.png) [@AssyRequired](https://community.electricforum.com/u/AssyRequired)\ **Post date:** [September 2, 2024, 1:13pm UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/32 "2024-09-02T13:13:09Z")
I have seen a few different generations of that connector bar. I see a corner of it in the pic, but not the whole thing. (pic please) Me(personally) likes the fewest connections as possible. ---
**Author:** ![EOppegaard](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/eoppegaard/32/7550_2.png) [@EOppegaard](https://community.electricforum.com/u/EOppegaard)\ **Post date:** [September 3, 2024, 3:20am UTC](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085/33 "2024-09-03T03:20:32Z")
So, I went a different direction. I didn’t want to experience this water ingress issue again, and our NEV lives most of its life outside and can be exposed to Florida downpours. I wanted a bit more protection than just the vinyl cover again. I got an IP67 box and put the BMS inside. To connect all the larger gauge wires, I went with 3 port Polaris connectors. This combined the two on each side of the BMS with the battery- and the P- I used 2 Gauge wire and ran out the Polaris connector, through a cable gland and to the battery and the fuse post. I ran the connectors through cable glads for all the individual cell wires and while not watertight as it’s a multi wire situation, it’s definitely pretty well sealed. Once I decide I am happy, I’ll likely silicone around all of the glands. So far, I am using the default lithium profile, and have been updating a few of the values that are different from the original profile screenshots I saved. A few don’t seem to want to send/save, so I will continue working on it. Connected up the charger and all seems to be doing well, likely will take it out for a drive tomorrow. ![PXL_20240903_030858043.MP](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/3X/3/f/3f652d8e15f3c2a7b1c2804d978d2e339d5a82d3.jpeg) ![PXL_20240903_031035841](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/3X/9/c/9c6d098baadeafd1b16da6627a91031aef0ffa4c.jpeg) ![PXL_20240903_030944881](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/3X/3/a/3ae4fd79144a3946fd430dcb6b801c4a13219b5b.jpeg) ![PXL_20240902_211718177](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/3X/9/e/9e59eada43601208fc9e709c42e9d4f0af61717c.jpeg) [Previous page](https://community.electricforum.com/t/lithium-cells-in-bms-disappeared-no-power/28085.md?page=1)