# Low battery alarm and no solar power yield **URL:** \ **Category:** Q&A and troubleshooting\ **Tags:** multiplus-ii, mppt, beginner, cerbo\_gx\ **Created:** [21 September 2025 11:09 UTC](https://community.victronenergy.com/t/low-battery-alarm-and-no-solar-power-yield/45741 "2025-09-21T11:09:38Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![frank.ren](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/frank.ren/32/1302_2.png) [@frank.ren](https://community.victronenergy.com/u/frank.ren)\ **Post date:** [21 September 2025 12:22 UTC](https://community.victronenergy.com/t/low-battery-alarm-and-no-solar-power-yield/45741/3 "2025-09-21T12:22:56Z")
Inspired by the following disucssion, I changed ESS mode from Optimised (with BatteryLife) to Keep batteries charged. The two MTTP’s shortly ramped up to generate power. Then they were throttled. One is shutdown complete, the other only generates 40W. > [@Photovoltaic System Drawing 100% Energy from the Grid Despite Full Batteries and Sunny Weather](https://community.victronenergy.com/t/photovoltaic-system-drawing-100-energy-from-the-grid-despite-full-batteries-and-sunny-weather/12870/3): > > Hi, my settings are set to Optimized (without BatteryLife) with a minimum SOC (unless the grid fails) at 20%. The issue is shown in the attached images: Image 1: Mode is set to “ON,” and as you can see, the energy is being drawn only from the grid. Image 2: Mode is switched to “Inverter Only,” and suddenly it starts drawing energy from the panels and the battery. Thank you for looking into this! Let me know if you need more details. blush A few more observations… --- _[View the full topic](https://community.victronenergy.com/t/low-battery-alarm-and-no-solar-power-yield/45741)._