This spare pack delivers up to 60 minutes* of run time at normal speed from its 13 000 mAh, 33.6 V Li-ion cells, which hold thrust steady right down to the last bar. A built-in LED gauge shows remaining charge at a glance. The slide-in design swaps packs instantly without tools or cables. An advanced BMS guards against over-charge, over-discharge, over-current, and short-circuit. Housed in an IP-sealed, corrosion-proof, impact-resistant shell. The battery weighs 3 kg / 6.6 lb, recharges fully in about 3 hours, and charges best between 5 °C and 40 °C (41_104 °F).
