# Multiplus 12/3000/120-50 120v voltage swings in Absorption and Float **URL:** \ **Category:** DIY\ **Tags:** rv, multiplus, diy\ **Created:** [6 September 2025 20:10 UTC](https://community.victronenergy.com/t/multiplus-12-3000-120-50-120v-voltage-swings-in-absorption-and-float/44927 "2025-09-06T20:10:04Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![owenb79](https://avatars.discourse-cdn.com/v4/letter/o/8baadc/32.png) [@owenb79](https://community.victronenergy.com/u/owenb79)\ **Post date:** [7 September 2025 01:51 UTC](https://community.victronenergy.com/t/multiplus-12-3000-120-50-120v-voltage-swings-in-absorption-and-float/44927/3 "2025-09-07T01:51:45Z")
If you have a GX device, you can use node red like I have done in here, to throttle the charge current when the voltage rises. I have a bunch of different 12V batteries in parallel and this helps them all balance out without tripping a BMS. > [@Stopping the bounce?](https://community.victronenergy.com/t/stopping-the-bounce/42672): > > Built this little setup to run my pool pump (working really well) but I think it could be improved to stop the controller from trying to charge the battery bank at 99% The solar panels make just a bit more or just a bit less than the 430watts my pump needs This works well but causes the charging to constantly bounce between charging and idle when production is right at that level. I’ve read I could change some settings and stop the charging function until the battery reaches 90% I think … --- _[View the full topic](https://community.victronenergy.com/t/multiplus-12-3000-120-50-120v-voltage-swings-in-absorption-and-float/44927)._