The No. 1 battery, the D-type battery, has a height of about 60.0mm and a diameter of about 32.3mm. Suitable for gas stoves, water heaters, electronic ignition equipment, flashlights, etc.
The No. 2 battery, the C-type battery, has a height of 49.5mm and a diameter of 25.3mm. Suitable for toys, flashlights, audio-visual equipment, etc.
No. 5 battery, AA battery, is about 49.0mm in height and 14.0mm in diameter. Suitable for alarm clocks, electric shavers, electronic toys, radios, remote controls, etc.
 AAA battery, the height is about 44.0mm, the diameter is about 10.0mm. It is mostly used for remote control and other occasions where the volume is limited but the power consumption is not too large.
The 9-volt battery, or PPP3 battery, has a height of about 48.5mm, a thickness of about 17.5mm, and a width of about 26.5mm. Mostly used for walkie-talkies, wireless microphones, multimeters, remote control toys, smoke alarms, etc.