HibikiB

Riding a Specialized Sirius frame with Dawes Galaxy Cross steel fork and it's wheelset.
Specialized Nimbus 32mm tyres at 100psi on 622x19, Truvative Touro crankset 52/42/30T, Shimano 9spd 11/32T, both SRAM shifters on left, XT RD, Magura hydro brakes F225 & R622, 35x620 bar, Nukeproof Electron Evo composite sealed bearing pedals and an SMP Hybrid saddle.
Heavily loaded and
Pulling a single wheel Adventure trailer.

I LIKE SHORE FISHING. HEADWINDS ARE A PROBLEM.
I have a front 36v/250w hub motor wheel. I want to overvolt to 48v or 44.4v
The fork is steel or chrome-moly with proper front eyelets and is made for loaded touring. I have a Tubus Tara rack which can be modified to whatever configuration necessary to carry batteries.
I want to carry the charger/s and a caravan hookup cable to the campsites 40-60 miles away, into the wind.
I need to choose the battery / technology that saves bulk and weight _when mounts and charger are included in the load_.