$64.99 12V 10Ah MK Sealed Lead Acid (AGM) Mobility Scooter Battery - Lead Acid Mobility Scooter 
Amazon.com: Tenergy 10000mAh NiMH D Battery, Rechargeable High Capacity D Size Battery, High 
12V 7AH Lithium Replacement Battery for HKbil 6FM7.0 - MightyMaxBattery
