Been surprised by the size of the battery charger seen in Initial Setup - Video #1
A really High-End recent (2017) one from the Canada-based Delta-Q, worth 500+ USD.
This charger contains Pre-loaded lithium charge profiles supporting various lithium-ion (Li-ion), lithium polymer (Li-Poly), or lithium iron phosphate (LiFePO4) cell and pack capacities.
Delta-Q IC1200 Charger 1200W with 48V 25A output.
It is possible to find cheaper 48V chargers such as the ones used in 48v Golf Carts but the recharge time is 4 to 6 hours instead of 2 hours (15 amps instead of 25).
48V 15 AMP Club Car Golf Cart Battery Charger for 190USD
I couln’t help looking at the battery life aspects. Lift have probably chosen Lithium-ion (Li-ion) cells because they have a better energy capacity, are cheaper and safer (explosion risk) than Li-Pos. However, both have a Recharge Life of 300 – 400 cycles, say 350. This means the battery pack should be renewed every 3 months in a school or rental place if recharged 4 times a day ! That’s a serious operational cost to take into account in a feasibility study ! From 8 or 9 am to 6 or 7 pm, only 8 persons riding 30 minutes each can use the board every day. That’s not many to make profits.