Product Main

Specifications

1.Basic information:
Product
R20 Size D UM-1 Metal Jacket Battery
Chemical System
Zinc-manganese dioxide  (Zn/MnO2)
Standard
IEC standard
Nominal voltage
1.5 Volts
Average capacity
>2900 mAh to 0.9 Volts
Open-circuit voltage
1.70 Volts
Closed-circuit voltage
1.52 Volts
Diameter
32.30-34.20MM
Height
59.50-61.50MM
Average weight
82.50 Grams
Shelf life
24 Months
Battery material
Manganese dioxide, Zinc, Acetylene black, Grophite powder, Carbon rod, Plating cap, Tinplate bottom etc

2.Detailed pictures below for your reference:
Full
Metal Jacket     
Metal jacket
Attractive out looking and more safe performance
Plating cap
Compose of metal and plastic not only make battery more attractive but also help battery more leakage proof

3.Why choose our battery?
 
Quality
With over 18 years' experience in battery business, we guarantee each single piece of battery is reliable in quality.
Service
Efficient and excellent service is the basic requirement you can expect from us.
Responsibility
Your satisfaction with our batteries and our service is our responsibility.

4.Quality control & performance:
1)Our battery is made of high quality raw materials which have been inspected strictly before usage.
2)Our workers and technicians closely watched each step in the battery production processes, strictly executed the quality management system to insure each battery up to IEC standard.
3)Our battery has the characteristics of high capacity, long-durability, super leak-proof, good performance of continuous discharge, long time of intermittent discharge, and it has low decline rate of capacity.

5.Chemical reaction:
In a zinc–manganese dioxide dry battery, the zinc can is the negative terminal through which the electric current flows into the device. The zinc is oxidised according to the following half-equation.
Zn(s) → Zn2+(aq) + 2 e− [E° = -0.7626 volts]
The positive terminal is a mixture of chemicals – usually a mixture of manganese dioxide powder, carbon and an electrolyte to increase the electrical conductivity. A carbon electrode rod also is placed inside the middle of the battery, connecting the two metal-capped ends of opposite charge and serving as the positive terminal.The reaction is as follows:2MnO2(s) + 2 e− + 2NH4Cl(aq) → Mn2O3(s) + 2NH3(aq) + H2O(aq) + 2 Cl− [e° ≈ +.5 v]and the Cl− combines with the Zn2+.There are other possible side-reactions, but the overall reaction in a zinc–manganese dioxide battery can be represented as:Zn(s) + 2MnO2(s) + 2NH4Cl(aq) → Mn2O3(s) + Zn(NH3)2Cl2 (aq) + H2O(l)

6.Packaging details:
Shrink pack
2 PCS
2 PCS
Colorful inner box
24 PCS
12 PCS
Colorful carton
288 PCS
240 PCS
Gross weight
25.50KGS
21.50KGS
Net weight
24.00KGS
20.00KGS
Carton size
430X295X220MM
515X280X145MM
1X20’FCL container
1,000 Cartons
1,200 Cartons

7.Product procedure:
 
 
1
Zinc can
The zinc can is the negative terminal and anode material
2
Inserting the separator

The separator and the bottom paper are inserted to prevent battery short-circuit between the positive and the negative electrode.
3
Filling cathode material
The mixture of manganese dioxide, electrolyte and others are filled as the cathode material
4
Inserting carbon rod
The carbon rod for collecting electricity is inserted into the middle of the battery
5
Sealing
The plastic gasket for sealing is fitted to prevent leakage and water evaporation
6
Fitting tinplate bottom and metal jacket
The tinplate bottom and washer are placed on the bottom of zinc can and covered by metal jacket
7
Finished product
The finished battery is packed by shrink after inspecting on its voltage, current and appearance

We promise to provide you with high quality battery as well as high efficiency services.