What are the AA batteries?

The size and specification of No. 7 Battery is a standardized size battery, which is also called AAA Battery -No.-noBatterytLR03LAM4/AM4) with a diameter of 10.5, a height of 44.5 mm and a cylindrical battery No. 7 batteries are mainly polymer lithium batteries, lithium iron phosphate batteries, nickel metal hydride batteries and dry batteries.

Introduction of No. 7 battery capacity

1. There is no fixed capacity of polymer lithium battery 7 lithium battery, the minimum is generally 160 mah, the production equipment is good, strong technical strength can do 1700 mah so. Shenzhen grep battery can do 1000 mah to 1650 mah of battery 7. 2. Lithium Iron Phosphate Battery 7 is similar to polymer lithium, but with a smaller capacity, usually 1200 mah, but because of the high manufacturing cost, it is difficult to compete with other low-cost no 7 batteries, so there are very few lithium iron phosphate no 7 batteries on the market. 3, ni-mh battery to do 7 batteries, battery capacity is generally 900 mah, large can do 1200 mah. Currently on the market to see the number 7 nickel-metal hydride battery than lithium iron phosphate, mainly because of its relatively low production costs, in the small battery area, can be replaced with each other is too strong. 4. No. 7 dry cell battery with a nominal capacity of 1000 mah (continuous discharge at 20 + 2 ° C to a termination voltage of 0.9 V with a load resistance of 3.90) . Because of the size of such a size of the battery, in actual use, more used for small electrical consumption of small appliances, the general 900 mah is more appropriate, and in manufacturing costs, dry batteries are the cheapest, it is therefore more competitive and therefore has the largest share of the market.

Number Two, number seven battery voltage V

1, polymer lithium battery do No. 7 battery nominal voltage is 3.7 V, there are table 4.2 V, this statement is generally said by the battery, in fact, a No. 7 Battery is a battery. Other higher voltage, basically through the series way to achieve. Lithium iron phosphate battery do 7 battery nominal voltage is 3.2 V, but also 3.65 V high-voltage version, this is also according to a (1 battery) , that is, the voltage of a single cell. 3. NI-MH battery do 7 battery nominal voltage is 1.2 V, is a single cell nominal, the current domestic standard voltage is 1.2 V. 4. dry-cell 7 is an older battery with a nominal voltage of 1.5 v. the material is similar to that used in older torches.

No. 3 and No. 7 batteries can be charged

Battery 7 can be charged when the production is to determine whether it can be charged, the current battery is basically a secondary battery, that is, rechargeable batteries, and rarely a disposable battery. As a result, most current AA batteries are rechargeable. Of course, whether the No. 7 battery can be charged or not depends on its purpose and instructions. Like the usual use of remote control batteries these, the basic is not rechargeable.