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Zhongneng Chengyu Power Co.,Ltd

Address: No.216 Changjiang Road, Huangdao Development District, Qingdao City, Shandong Province, China


Tel: +86-532-86934246

Fax: +86-532-86934246

Flooded Tubular VRLA Battery

Flooded Tubular VRLA Battery

OPzS2-300-Y Product Features: Cycle life: >2200 at 80% DOD Self discharge rate ≤5%/month High charge acceptance performance; Wide operation temperature: -40℃~ 70℃ Good deep discharge recovery performance. Positive plate: tubular type, with die-casting thick Pb-Ca grid, it has very good...

Product Details

Flooded Tubular VRLA Battery are designed with a combination of die-casting Tubular positive framework and superfluous electrolyte technologies to offer a very  high lever of reliability and a long service life. Opzs batteries used special filter and proof design to ensure no acid fog runs over and burning proof, and also convenient examine and maintenance.


Main Parameters








Dry Weight


Wet Weight


Terminal Type



Sealed Type



Brand Name

Product Features

1. Positive plate: tubular type, with die-casting thick Pb-Ca grid, it has very good corrosion resistance and very long service life;
2. Negative plate: pasted flat type, radial grid design, good high rate discharge performance;
3. Separator: Porous corrugated plastic board combine with microporosity rubber separactor, more space for electrolyte storage, improving the speed of electrolyte diffusion, avoid the short circuit after deep dischrage.

4. Battery case: Using high strength AS transparent container, nice apperance corrosion resistance, high quality, directly seeing the electrolyte condition.

5. Flooded electrolyte design: contain more electrolyte, space between plates and separators are full of electrolyte thus means good heating capacity and avoid “thermal runaway”

6. Electrolyte: adopts Germany gas sillocon dioxide, electrolyte in gel state in the battery without flowing, leakage and lamination can be avoided.

7. Safety Valve: adopt Germany technology, constant opening and closing, accumulator case expansion, damage and electrolyte dry up can be avoided.

Product Specification of Flooded Tubular VRLA Battery

Voltage Per Unit2V
Capacity300Ah@10hr-rate to 1.85V per cell @25℃
Dimension(LxWxH)145 x 206 x 410mm
Approx WeightWithout Electrolyte 18.5kg With Electrolyte 24.5kg

Max. Discharge


1400 A (5 sec)
Internal ResistanceApprox. 0.70 mΩ




Discharge: -15℃ ~50℃;
Charge: 0℃~40℃;
Storage: -15℃~50℃

Optimal Operating



25℃± 5℃

Float charging


2.23 to 2.25V(DC)/cell at 25℃

Maximum Charging


Cycle Service2.40 to 2.45 V(DC)/cell at 25℃
Self Discharge

Self-discharge rate less than 3.5% per month at 25℃.

Please charge batteries before using.

TerminalThread insert & Bolt (F10-M8)
Container MaterialA.S. (UL94-HB), and UL94-V0 is Optional.


Compliant Standards

IEC60254- 2005
DIN/ EN 60254-2
GB 7403-2008
Passed ISO9001, ISO14001, OHSAS18001, UL, CE certificate


Datasheet of Flooded Tubular VRLA Battery






UPS System/ Solar Photovoltaic System
Automatic System/ Communication System
Electrical Power System/ Nuclear Power System
Data Processing System/ Emergency Lighting System
Power Station, Transformer Substation Switch Operation System Traction forklifts
Traction electric vehicles/ Electric cars
Photovoltaic / Wind Power

electric-cars.jpg   light-supply-system.jpg

Electric Car                                                    Light Supply Power

power storage plant.png   solar system.png

Telecommunication                                               Solar System

Battery Structure

1. Container and lid
Container and lid is PP material, based on the heat sealing technology to avoid leak of the electrolyte.
2. Negative plate
Thick with cage design for improved holding of the active material and high electrical conductivity.
3. Separator
Microporous polyethylene envelops, to ensure high performance and complete insulation between positive and negative plates,while allowing the free flow of electrolyte throughout the cell.
4. Positive plate
Matured tubular positive plate technology, use imported non-woven calandria in all plate calandria.
5. Terminal
Positive and negative terminal with large copper core cast lead alloy to ensure the battery large current discharge performance.
6. Safety valve
Unique mist collection reflux design, reduces water loss, and reduces maintenance frequency.
7. Flexible connector
With copper core to avoid loose caused by vibration and facilitate maintenance. Holes reserved on the protection cover of the connector for testing the battery voltage.


All batteries are used for carton packaging, all wooden wooden pallets are used. Of course, it can also be packaged in accordance with the requirements of the customer.

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Product Processing

We strictly control every process. Every part of the product is the best quality. We hope that our customers can use our products and feel our sincerity and strength.

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Use and maintenance

1. Please use constant-voltage charge.

2. In floating charge, the voltage is 2.23 to 2.27 per unit cell.In cycle use,

3. the voltage is 2.35 to 2.45 per unit cell,the max.current is no more than 25%C

4. Please do tighten the bolts to avoid sparkle and poor contact when the battery is in use

5. Please do not use it near the heat source and open flame

6. Please keep it at low temperature.Please change it while there is liquid leaking or damage

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