This is a Racers Edge RCE2104 LiPo Battery Charging Safety Briefcase (240 x 180 x 65mm).
Safely and conveniently store, transport, and charge a wide range of LiPo packs with Racer's Edge new safety briefcase. Easily holds up to five 6S packs. Constructed from durable and flame resistant ballistic material with heavy-duty stitching and aggressive hook & loop closures. Also features a convenient carrying handle.