The battery of BBK morning education machine is No.5, and the battery models are generally divided into: 1, No.2, No.3, No.5 and No.7, among which No.5 and No.7 are particularly commonly used. The so-called AA battery is the No.5 battery and the AAA battery is the No.7 battery.

1, diameter of d battery (large battery /LR20/AM 1) Ф 34.2; Height 61.5 mm; ;

2. The diameter of type C battery (No.2 battery /LR 14/AM2) is Ф 26.2; Height 50.0mm；;

3. The diameter of 3.AA battery (No.5 battery /LR6/AM3) is Ф14.5; Height 50.5mm；;

4. The diameter of 4.AAA battery (No.7 battery /LR03/AM4) is Ф10.5; Height 44.5mm；;

The diameter of 5.AA/2 battery (No.8 battery LR 1/AM5) is Ф11.0; Height 30.0mm；;

6. The diameter of 6.AAAA battery (No.9 battery /LR6 1/AM6) is Ф 8.0; Height 39.5mm；;

The diameter of 7.AAAA/2 battery (Small 9 battery /LR6 1/AM6) is Ф 8.0; The height is 28.0 mm.

Buy batteries

1. Buy battery products marked with "National Inspection Exemption" and "China Famous Brand" and local famous brand battery products. The quality of these products is guaranteed.

2, according to the requirements of electrical appliances, choose the appropriate battery type and size, and according to the size and characteristics of electrical power consumption, choose and buy batteries suitable for electrical appliances.

3. Pay attention to the production date and shelf life of the battery, and buy a battery (new battery) with good performance.

4, pay attention to check the appearance of the battery, should buy beautifully packaged, neat appearance, clean, no signs of leakage of battery.

5. Because the mercury in the battery is harmful to the environment, in order to protect the environment, batteries marked with the words "no mercury", "0% mercury" and "no added mercury" should be selected when purchasing.

Refer to the above content: Baidu Encyclopedia-Battery