The 9V battery is an extremely common battery that was first used in transistor radios. It features a rectangular prism shape that utilizes a pair of snap connectors which are located at the top of the battery. A wide array of both large and small battery manufacturers produce versions of the 9V battery. Possible chemistries of primary (non-rechargeable) 9V batteries include Alkaline, Carbon-Zinc (Heavy Duty), Lithium. Possible chemistries of secondary (rechargeable) 9V batteries include nickel-cadmium (NiCd ), nickel-metal hydride (NiMH ), and lithium ion. The performance and application of the battery can vary greatly between different chemistries, meaning that some chemistiries are better suited for some applications over others.
9V Battery Nominal Voltage:
9 Volts
Capacity (Alkaline) ≈
550 mAh
Capacity (Carbon-Zinc) ≈
400 mAh
Capacity (Lithium Primary) ≈
1200 mAh
Capacity (NiMH) ≈
175-300mAh
Operating Temperature:
0°C – 60°C
Length:
17.5 mm
Height:
48.5 mm
Wid