This is the Great Planes ElectriFly Compact E-Box Flight Box for electric aircraft.
Prebuilt from laser cut plywood and factory finished Designed to fit the Great Planes Triton, Hobbico Accu-Cycle Elite and the Hobbico Quick Field chargers. The charger's battery connectors must be changed to Banana Plugs, HCAP0310 Small enough to fit in a car-spacious enough to a hold a charger and most 12V batteries including the Hobbico TorqMaster, HCAP0800 Once handle is installed the charger cannot fall out even if box is tipped on its side Vents allow heat to escape to keep batteries cooler. Recessed battery jacks avoid fouling with 16AWG wire and spade clips.
Length : 6.9 in. (176mm)
Width : 6.8 in. (173mm)
Height : 10.2 in. (258mm)