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Relationship between remaining battery voltage and its percentage
Type of battery 0% 100%
1.2V Rechargeable battery 0.90V 1.29V
1.5V Heavy duty
1.14V 1.50V
1.5V Alkaline
3.0V 2.00V 3.00V
6.0V 3.58V 6.00V
9.0V Heavy duty
7.50V 9.00V
9.0V Alkaline
12.0V 6.00V 11.90V
