# Why does my state of charge not update **URL:** \ **Category:** DIY\ **Tags:** smart\_lithium, beginner, cerbo\_gx, victronconnect, vrm\ **Created:** [16 July 2025 21:22 UTC](https://community.victronenergy.com/t/why-does-my-state-of-charge-not-update/39720 "2025-07-16T21:22:03Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![VWTransportert6.1](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/vwtransportert6.1/32/30326_2.png) [@VWTransportert6.1](https://community.victronenergy.com/u/VWTransportert6.1)\ **Post date:** [16 July 2025 21:22 UTC](https://community.victronenergy.com/t/why-does-my-state-of-charge-not-update/39720/1 "2025-07-16T21:22:03Z")
Hi, I’ve only had the system for a week, but I’m struggling to understand something. When the DC-DC charger and MPPT start to slow down, it usually indicates the batteries are nearly full—but the GX Touch 70 and the data in VictronConnect don’t seem to update to reflect that. Last week, the battery level suddenly jumped from 44% to 100% in an instant. Since then, it’s just been steadily dropping again, even though the charging status suggests the batteries should be close to full again. Any idea what’s going on? ![Screenshot 2025-07-16 at 22.16.28](https://europe1.discourse-cdn.com/victron/original/3X/b/9/b99bcf0cd8717b6110984e27c5c486986bc7f88a.png) ![Screenshot 2025-07-16 at 22.11.09](https://europe1.discourse-cdn.com/victron/original/3X/2/5/253792505b197b83b7f2745354855bfa86c53ec0.jpeg) ![Screenshot 2025-07-16 at 22.10.57](https://europe1.discourse-cdn.com/victron/original/3X/9/5/95cdce5c406180b3aabbd35e6118ac7f865a7a5d.png) ---
**Author:** ![VWTransportert6.1](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/vwtransportert6.1/32/30326_2.png) [@VWTransportert6.1](https://community.victronenergy.com/u/VWTransportert6.1)\ **Post date:** [16 July 2025 21:24 UTC](https://community.victronenergy.com/t/why-does-my-state-of-charge-not-update/39720/2 "2025-07-16T21:24:11Z")
Also should I be concerned about these errors showing in VRM??? ![Screenshot 2025-07-14 at 22.50.51](https://europe1.discourse-cdn.com/victron/original/3X/d/4/d422d7bb7e6183e303cb8a4ba7c9fd56f379e26a.png) ![Screenshot 2025-07-14 at 22.50.12](https://europe1.discourse-cdn.com/victron/original/3X/8/5/858d7ce50db70b888bbd757866c3731cc93154b9.png) ---
**Author:** ![lxonline](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/lxonline/32/25567_2.png) [@lxonline](https://community.victronenergy.com/u/lxonline)\ **Post date:** [17 July 2025 06:00 UTC](https://community.victronenergy.com/t/why-does-my-state-of-charge-not-update/39720/3 "2025-07-17T06:00:56Z")
> [@VWTransportert6.1](#): > > these errors No. Don’t worry about those. For incorrect state of charge there is a [section in the manual](https://www.victronenergy.com/media/pg/Lynx_Smart_BMS/en/troubleshooting-and-support.html#UUID-999d3655-581e-3706-80c4-1c9358ddcd13) For more in-depth look at [settings and common problems there is a resource here.](https://community.victronenergy.com/t/frequently-asked-questions-and-commonly-encountered-issues-with-diy-installs/377) ---
**Author:** ![VWTransportert6.1](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/vwtransportert6.1/32/30326_2.png) [@VWTransportert6.1](https://community.victronenergy.com/u/VWTransportert6.1)\ **Post date:** [17 July 2025 18:45 UTC](https://community.victronenergy.com/t/why-does-my-state-of-charge-not-update/39720/4 "2025-07-17T18:45:02Z")
Many thanks. It does appear to be configured correctly in the BMS I think??? Now seeing balancer status as unknown. All batteries were charged fully before being installed to the system. ![Screenshot 2025-07-17 at 19.42.06](https://europe1.discourse-cdn.com/victron/original/3X/1/c/1c85eac2645915e2fa5d4caea905ff55245e861b.png) ![Screenshot 2025-07-17 at 19.03.51](https://europe1.discourse-cdn.com/victron/original/3X/4/d/4d741d1d9e0940083d8872b7a37a2c65e9a81f4f.png) ![Screenshot 2025-07-17 at 19.42.22](https://europe1.discourse-cdn.com/victron/original/3X/8/d/8d6bacedd415f13f67171da67a9d3b7cf5a68e3f.png) ---
**Author:** ![pwfarnell](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pwfarnell/32/2341_2.png) [@pwfarnell](https://community.victronenergy.com/u/pwfarnell)\ **Post date:** [17 July 2025 21:11 UTC](https://community.victronenergy.com/t/why-does-my-state-of-charge-not-update/39720/5 "2025-07-17T21:11:51Z")
What have you got connected to the left hand side of the BMS. Have you got a charger on the left hand side. Only the batteries should be on the left hand side. Image from the datasheet. ![Screenshot_20250717_220848_Chrome](https://europe1.discourse-cdn.com/victron/original/3X/c/9/c9b2ecdce3bc09103e02a6337aa015d8ec6c2116.jpeg) > **[Datasheet-Lynx-Smart-BMS-EN.pdf](https://www.victronenergy.com/upload/documents/Datasheet-Lynx-Smart-BMS-EN.pdf)** > > 564.24 KB ---
**Author:** ![pwfarnell](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pwfarnell/32/2341_2.png) [@pwfarnell](https://community.victronenergy.com/u/pwfarnell)\ **Post date:** [17 July 2025 21:15 UTC](https://community.victronenergy.com/t/why-does-my-state-of-charge-not-update/39720/6 "2025-07-17T21:15:11Z")
Have you grounded your batteries negative direct to the chassis. If you have then the alternator charge current is not being measured properly. If you need to connect your batteries to the chassis then the chassis connection is made on the right hand side of the BMS, the same as loads and chargers. ---
**Author:** ![VWTransportert6.1](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/vwtransportert6.1/32/30326_2.png) [@VWTransportert6.1](https://community.victronenergy.com/u/VWTransportert6.1)\ **Post date:** [17 July 2025 21:47 UTC](https://community.victronenergy.com/t/why-does-my-state-of-charge-not-update/39720/7 "2025-07-17T21:47:10Z")
Many thanks. I will ask for the wiring diagrams from the installer and then check it all matches up. I had it all fitted to the van before collection so not 100% sure.