Tamiya item 15420 - Neochamp Rechargeable Mini 4WD Ni-MH Battery 2pcs. Battery & Charger (AA) Mini 4WD Series
These rechargeable Ni-MH batteries are lightweight (19g each) and might be recharged roughly 2,000 times. Minimal self-discharging permits durable battery power life. Battery life degree may change predicated on use conditions.