Light Aircraft Association

I currently fly a SkyRanger Swift. This time of year our grass runway is often unserviceable for months at a time, resulting in the battery losing charge. I normally remove the battery and charge it on the workbench but I am wondering if I could charge it insitu via the fitted 'cigarette lighter' so...

I want to fit an MGL Avionics Duel range fuel flow sender in my 582 SkyRanger. This is a simple fit as I already have an MGL EFIS monitoring other engine parameters plus providing flight instruments. The BMAA tech office have asked me if there are any aircraft already flying with one of these sender...