# Battery pack cap at 91% **URL:** \ **Category:** DIY\ **Tags:** bmv, cerbo\_gx, diy, offgrid\ **Created:** [3 March 2025 15:14 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997 "2025-03-03T15:14:39Z")\ **Posts on this page:** 8\ **Page:** 2
**Author:** ![Pierre](https://avatars.discourse-cdn.com/v4/letter/p/d07c76/32.png) [@Pierre](https://community.victronenergy.com/u/Pierre)\ **Post date:** [4 March 2025 07:48 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997/21 "2025-03-04T07:48:44Z")
ho ok, I didn’t know it was normal behavior Thanks for the explanations ! 🙂 And so we can create our own charts… interesting ! 🙂 ---
**Author:** ![Pierre](https://avatars.discourse-cdn.com/v4/letter/p/d07c76/32.png) [@Pierre](https://community.victronenergy.com/u/Pierre)\ **Post date:** [4 March 2025 08:13 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997/22 "2025-03-04T08:13:20Z")
playing with the charts makes me wonder. As for the cars batteries, there is a temp to reach to optimize the charge of the cells… I suppose temp could as well impact the charging process ? ![image](https://europe1.discourse-cdn.com/victron/original/3X/0/e/0e584a84578d5a4afb17e7d49337a5a681f83f35.png) ---
**Author:** ![Pierre](https://avatars.discourse-cdn.com/v4/letter/p/d07c76/32.png) [@Pierre](https://community.victronenergy.com/u/Pierre)\ **Post date:** [4 March 2025 21:15 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997/23 "2025-03-04T21:15:44Z")
@nickdb I just finish to read your link about Pylontech and Victron. The answer of my previous question about the temperature was in it 🙂 Thanks again, I’ll keep it in my bookmarks for sure ^^ ---
**Author:** ![moranchoj](https://avatars.discourse-cdn.com/v4/letter/m/2acd7d/32.png) [@moranchoj](https://community.victronenergy.com/u/moranchoj)\ **Post date:** [10 March 2025 11:41 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997/24 "2025-03-10T11:41:04Z")
It is normal. I also have 2 pylontech us5000 with mpii 5kw and mppt 250/80 that I installed almost 3 years ago. I am off-grid too. Pylontech bms manages battery charge and tine to tine it decides to cap max SOC lower than 100% for some weeks and later moves again to 100% SOC. In my case use to be at 95%, 98% or 93%. I want to understand that there is sone cell imbalance and bms limits max charge until cell imbalance is solved. I was surprised when I installed the batteries for the first tine as I stayed more than 2 months lower than 100% and later SOC reached 100%. Actually i am in the period where SOC is capped to a maximum of 95%. ![IMG_1277](https://europe1.discourse-cdn.com/victron/original/3X/1/d/1d377fe5f9ba0b2cf9c90f67e0bec926b5009972.jpeg) ---
**Author:** ![Pierre](https://avatars.discourse-cdn.com/v4/letter/p/d07c76/32.png) [@Pierre](https://community.victronenergy.com/u/Pierre)\ **Post date:** [10 March 2025 11:54 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997/25 "2025-03-10T11:54:47Z")
Hi Josep, Thanks for the info ! ---
**Author:** ![moranchoj](https://avatars.discourse-cdn.com/v4/letter/m/2acd7d/32.png) [@moranchoj](https://community.victronenergy.com/u/moranchoj)\ **Post date:** [10 March 2025 12:17 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997/26 "2025-03-10T12:17:59Z")
Look at this. This is august 2024. SOC reaches 98% and stays there for almost all the day and later jump to 100% suddenly. I am not an expert at all but i eant ro understand that the reason is that there is cell imbalance and the bms algorithm limits charge while cell balancing is done. An expert as @nickdb or @alexpescaru should confirm. ![IMG_1278](https://europe1.discourse-cdn.com/victron/original/3X/c/2/c297c5d47f2bfb4b0a09c4a86e4bed8eafe8924b.jpeg) ---
**Author:** ![Pierre](https://avatars.discourse-cdn.com/v4/letter/p/d07c76/32.png) [@Pierre](https://community.victronenergy.com/u/Pierre)\ **Post date:** [18 March 2025 20:16 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997/27 "2025-03-18T20:16:34Z")
Hi Josep, After some days, the charge came back to 100% indeed 👌 Thanks ! And Thanks anybody else, I’ve learned a lot with those exchanges 🙂 ---
**Author:** ![system](https://europe1.discourse-cdn.com/victron/original/1X/21a9a7b5db7c6339715f993568736a7053199995.png) [@system](https://community.victronenergy.com/u/system)\ **Post date:** [1 April 2025 20:16 UTC](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997/28 "2025-04-01T20:16:37Z")
Closed on 1 April 2025 20:16 UTC This topic was automatically closed 14 days after the last reply. New replies are no longer allowed. [Previous page](https://community.victronenergy.com/t/battery-pack-cap-at-91/23997.md?page=1)