# Looking to heat batteries

**URL:** <https://community.victronenergy.com/t/looking-to-heat-batteries/20754>\
**Category:** DIY\
**Tags:** rv, cerbo\_gx, lithium\_battery, diy\
**Created:** [1 February 2025 22:52 UTC](https://community.victronenergy.com/t/looking-to-heat-batteries/20754 "2025-02-01T22:52:22Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**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:** [2 February 2025 09:16 UTC](https://community.victronenergy.com/t/looking-to-heat-batteries/20754/3 "2025-02-02T09:16:49Z")

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As @alexpescaru said, but make sure the relay has flyback protection otherwise surge current switching the relay may damage the Cerbo relay.

[Driving another relay with the Cerbo.](https://community.victronenergy.com/t/using-inverter-mppt-gx-device-programmable-relays-with-higher-current-inductive-or-capacitive-loads/99)

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