# Cerbo gx relay **URL:** \ **Category:** DIY\ **Tags:** smart\_battery\_sense, marine, beginner, cerbo\_gx\ **Created:** [22 March 2025 23:36 UTC](https://community.victronenergy.com/t/cerbo-gx-relay/26188 "2025-03-22T23:36:44Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![Rabthecrab](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Rabthecrab](https://community.victronenergy.com/u/Rabthecrab)\ **Post date:** [23 October 2025 15:38 UTC](https://community.victronenergy.com/t/cerbo-gx-relay/26188/3 "2025-10-23T15:38:20Z")
I’ve just created a feature request to be able to add a second battery voltage as an input parameter for the cerbo relays (so I can use the trickle charged feature of the multiplus ii). Seems like an obvious use case, not sure why Victron haven’t already done this. > [@Feature request : Cerbo GX to use starter/secondary battery voltage as relay trigger](https://community.victronenergy.com/t/feature-request-cerbo-gx-to-use-starter-secondary-battery-voltage-as-relay-trigger/47531): > > I’d like to use the trickle charge feature of my multiplus to keep my starter battery topped up in my camper van. However, the trickle charger is not clever enough to know when the battery is charged so I don’t use it in case it overcharges. I also have a Orion XS which reports the starter battery voltage (input voltage) to the cerbo GX which I also have installed. If the cerbo could use the input voltage from the Orion as a function parameter for a relay, I could start and stop the trickle cha… --- _[View the full topic](https://community.victronenergy.com/t/cerbo-gx-relay/26188)._