2x Ampsplus 16650 2000mAh 3.7V Lithium Rechargeable Batteries Button Top + Case
Battery: 16650. 16650 Battery Safety! 16650 3.7V Batteries can leak when misused or when defective! 16650, Battery, 3.7v, Li-ion. Nominal Capacity: 2000mAh. + Free battery protective plastic case with each pair of batteries.