Battery Type	Capacity	Voltage @ 100% Capacity	Voltage @ 20% Capacity	Voltage @ End
Alkaline	110 mAh	1.55	1.20	0.90
2 cells	---	3.10	2.40	1.80
NiMh	40 mAh	1.30	1.18	1.00
2 cells	---	2.60	2.36	2.00
Single Li-Ion	210 mAh	4.10	3.70	3.00