Running tempest weather flow from 12v

Just another RV full timer here and am frustrated with low battery levels with my station. We are not always to pull into a site that gets full sun and therefore battery power is most of the time below 2.5v

Anyone been able to hook the 12v power from RV in order to keep the station fully charged?

If so please share components used.

get a power booster from weatherflow. it accepts 12V as input.

this is the power booster Sunny talks about.

A more detailed page for its options

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