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Quick Details

  • Place of Origin: Shandong, China (Mainland)
  • Brand Name: EVERBRIGHT
  • Model Number: R20
  • Battery Type: Zn/MnO2
  • Nominal Voltage: 1.5V
  • Size: D
  • Nominal Capacity: >2900 mAh
  • Chemical system: Zinc-manganese dioxide (Zn/MnO2)
  • Technology Criterion: IEC60085-2:2007,2006/66/EC
  • Certificate: SGS, ISO9001:2008,MSDS,SONCAP
  • Quality: Excellent
  • Jacket: Metal
  • Short circuit current: >5A
  • Continuous discharge time: >300 Minutes
  • Diameter: 32.30-34.20 MM
  • Height: 59.50-61.50 MM
  • Mercury & Cadmium: <0.01%

Packaging & Delivery

Packaging Details 1) 2 PCS Shrink Pack,24 PCS/Colorful Box,288 PCS/Colorful Carton,1,000 Cartons/20'FCL;
2) 2 PCS Shrink Pack,12 PCS/Colorful Box,240 PCS/Colorful Carton,1,200 Cartons/20'FCL;
Delivery Time Shipped in 30 days after payment

R20 UM1 1.5V D Size Batteries Suppliers Hot Sale In Africa

1.Basic information: 


R20 UM1 1.5V D Size Batteries Suppliers Hot Sale In Africa

Chemical System

Zinc-manganese dioxide  (Zn/MnO2)


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





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:


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?



With over 18 years' experience in battery business, we guarantee each single piece of battery is reliable in quality.


Efficient and excellent service is the basic requirement you can expect from us.


Your satisfaction with our batteries and our service is our responsibility.



4.Technical data:


                      Battery discharge curve 


5.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.


6.Internal structure:


7.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)


8.Packaging details:

Shrink pack



Colorful inner box

24 PCS

12 PCS

Colorful carton

288 PCS

240 PCS

Gross weight



Net weight



Carton size



1X20’FCL container

1,000 Cartons

1,200 Cartons


                                                       Colorful  inner box


                             Batteries have been put into the colorful  inner box


                                                      Colorful outer carton



9.Product procedure:



Zinc can

The zinc can is the negative terminal and anode material


Inserting the separator

The separator and the bottom paper are inserted to prevent battery short-circuit between the positive and the negative electrode.


Filling cathode material

The mixture of manganese dioxide, electrolyte and others are filled as the cathode material


Inserting carbon rod

The carbon rod for collecting electricity is inserted into the middle of the battery



The plastic gasket for sealing is fitted to prevent leakage and water evaporation


Fitting tinplate bottom and metal jacket

The tinplate bottom and washer are placed on the bottom of zinc can and covered by metal jacket


Finished product

The finished battery is packed by shrink after inspecting on its voltage, current and appearance







          Feel the new power of Everbright battery

            Enjoy the new power of Everbright battery



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




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