# Controlled charging system **URL:** \ **Category:** Q&A and troubleshooting\ **Tags:** node-red, multiplus-ii, battery\_charging, beginner\ **Created:** [27 September 2025 14:25 UTC](https://community.victronenergy.com/t/controlled-charging-system/46097 "2025-09-27T14:25:54Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![bjorn.aenspeck](https://avatars.discourse-cdn.com/v4/letter/b/da6949/32.png) [@bjorn.aenspeck](https://community.victronenergy.com/u/bjorn.aenspeck)\ **Post date:** [27 September 2025 14:25 UTC](https://community.victronenergy.com/t/controlled-charging-system/46097/1 "2025-09-27T14:25:54Z")
Hi All, I have a working system with 2xMP2, Pylontech battery and SmartSolar system. Now during winter, I would like the system to ‘charge’ my batteries at a low charge current (max 2000W) from 30 up to 50%. This way I prevent overload on the grid side, and keep my batteries healthy. I have enough with 50% SoC to make it to next morning. Also, my minimum SoC is 20%, so then I fully connect to the grid. but then I need to avoid power peaking on ACout side, because if we use 15min more then 2500W from the grid, I have a higher power price to pay. with the help of my batteries I hope to avoid this. Any ideas ? I am already starting to play with NodeRED, but I’m not able to figure out how to control the charger? So, I also have ESS to inject y power to the grid. but when I activate the ‘charge schedul’e’ I’m not able to limit the charge power. ---
**Author:** ![BjoernK](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/bjoernk/32/89_2.png) [@BjoernK](https://community.victronenergy.com/u/BjoernK)\ **Post date:** [27 September 2025 14:28 UTC](https://community.victronenergy.com/t/controlled-charging-system/46097/2 "2025-09-27T14:28:51Z")
Look for „power assist“ in docs and VEconfigure ---
**Author:** ![bjorn.aenspeck](https://avatars.discourse-cdn.com/v4/letter/b/da6949/32.png) [@bjorn.aenspeck](https://community.victronenergy.com/u/bjorn.aenspeck)\ **Post date:** [27 September 2025 14:54 UTC](https://community.victronenergy.com/t/controlled-charging-system/46097/3 "2025-09-27T14:54:44Z")
Power assist is not the real item I need. I have considered thsi already. I want to charge my battery from the grid, with a maximum 2400W power, from 30% up to maximum 50% so, whenever my SoC reaches 30%, this ‘limited’ charger has to start working. once reached 50% it should stop charging. This to avoid my battery to drop to 20%, but still leaves me for using battery power when I use high power for short time. What i mostly look for, is the NodeRed function to activate my MP2 devices to start charging my natteries but at limited power (2500W max) ---
**Author:** ![kr0815](https://avatars.discourse-cdn.com/v4/letter/k/48db29/32.png) [@kr0815](https://community.victronenergy.com/u/kr0815)\ **Post date:** [27 September 2025 16:54 UTC](https://community.victronenergy.com/t/controlled-charging-system/46097/4 "2025-09-27T16:54:16Z")
you need 2 ations: First, set max charge power to 2400W Second, set desired SOC higher, so charging starts Lok at the Node “Settings Control” - then select venus settings Looks like you will have to give max Ampere instead of max Watt, but that should be easy to calculate But i think your logic is wrong, power assist is the right way - otherwise maybe the dishwasher runs and you are over the 2500W limit Also, if you set desired SOC to 30 % - it will never drop to 20% as long as there is AC Feed in available ---
**Author:** ![system](https://europe1.discourse-cdn.com/victron/original/1X/21a9a7b5db7c6339715f993568736a7053199995.png) [@system](https://community.victronenergy.com/u/system)\ **Post date:** [9 February 2026 19:17 UTC](https://community.victronenergy.com/t/controlled-charging-system/46097/5 "2026-02-09T19:17:22Z")
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