Devo f7 will not turn on via battery

My devo f7 will not turn on via my lipo but will turn on via mains adaptor. The lipo is fine as I just ordered it and it also works in my devo f4 radio. Could there be something in my settings? Or is my devo f7 broken. Any help would be much appreciated. Thanks

A post was merged into an existing topic: Problem with devo f7 (won’t turn on)