1. Graphene / Lead-Acid Battery OptionsThis is the standard option configuration commonly found in retail builds for these workhorse commuter bikes:72V 20Ah (1,440 Watt-hours) — Standard package.72V 26Ah to 35Ah (1,872 to 2,520 Watt-hours) — Long-range/upgraded packs that extend mileage per single charge.2. Lithium-Ion / LFP Battery OptionsOften preferred for heavy-duty commercial or delivery services due to quicker charge times and a longer cycle life span:72V 30Ah (2,160 Watt-hours).72V 40Ah to 48Ah (Up to 3,456 Watt-hours) — Maximum capacity setups for high-mileage utility.