What's the number of Fu Nan battery?

Fu Nan batteries are mostly alkaline batteries, so it is necessary to add the letter L before the national standard models. Commonly used battery models are 1, 2, 5 and 7. To tell what kind of battery it is, you can tell from the model marked on the battery case:

1 battery, national standard model R20/LR20, English code d, diameter 34.2 mm, height 6 1.5 mm, is widely used, and D-type batteries can be found in civil, military and special DC power supplies.

No.2 battery, the national standard model is R 14/LR 14, the English code is C, and the diameter is Ф Ф 26.2 mm; ; The height is 50.0 mm.

No.5 battery, GB model R6/LR6, English code AA, diameter Ф Ф14.5mm; ; The height is 50.5 mm.

No.7 battery, the national standard model is R03/LR03, the English code is AAA, and the diameter is Ф Ф10.5 mm; ; The height is 44.5 mm.

Extended data:

Several methods to identify the authenticity of Fu Nan battery;

1. The design words on the trademark of genuine Fu Nan battery cannot be scraped off. If the combination of words on the trademark can be scraped off, it can be considered as a fake.

2. If you can't remove the production date code by wiping with alcohol or scraping with a knife, you can judge that the battery is a fake.

3. The fake shaped charge ring is attached with a plastic ring, which even falls off at a glance, which is very rough and uneven. Genuine and battery are integrated, which is the most obvious and easy to master.

References:

Baidu Encyclopedia-Fu Nan Battery