Many parts are interchangeable between models.
Roto Drill Electric Nitro Starter Battery 7.2v NiMH 2000 mAh WITH USB Charger
Drill Electric Nitro Roto start Battery 7.2v NiMH 3600 mAh RC Rechargeable
7.2v NiMH 3600 mAh RC Rechargeable Battery + USB Charger - Tamiya Connector
7.2v NiMH 3600 mAh RC Rechargeable Car Truck Buggy Battery - Tamiya Connector UK
GP RECYKO PRO Rechargeable AAA Battery Micro NiMH 800 mAh 1.2 V Pack of 4
Nitro Engine Roto Start Battery 7.2v NiMH 3000 mAh RC Rechargeable UK