Our 15ah 36V Commuter battery pack is comprised of Samsung 50S cells, and is designed specifically for long range with impressive power. A specs comparison chart is below. Please note that you must use a 36v (10s) nominal l-ion charger with a 5.5 x 2.1 mm DC barrel connector (ring = negative/tip = positive) for this pack. 

All our battery packs are carefully spot-welded using .3mm pure nickel connections, with a bms for balance on charge and discharge. They are then fully potted with Epic Resins S75253 thermal epoxy to isolate each cell a minimum of 2mm from any neighboring cell or surface, and encased in aluminum for high heat dissipation, fire-propagation resistance, shock absorption, and water resistance (read all about it here). Handmade in Los Angeles, our battery packs are arguably the toughest and most high-performance batteries of their size.