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


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Rechargeable Flooded Battery

Rechargeable Flooded Battery

OPzS2-3000-Y Product Features: Cycle life: >2200 at 80% DOD Self discharge rate ≤5%/month High charge acceptance performance; Wide operation temperature: -40℃~ 70℃ Positive plate: tubular type, with die-casting thick Pb-Ca grid, it has very good corrosion resistance and very long service...

Product Details

Rechargeable Flooded Battery are standby batteries with tubular plates, especially designed as battery backup power for all industrial applications which demand low-maintenance as well as average and long discharges. Our OPzS series have Deep cycle performance and long service life, Low self-discharge, High charging efficiency, Safe sealed technology, Eco-friendly. Thanks to the OPzS stationary battery series, we can offer a reliable and environment-friendly energy source for back-up systems for innumerable applications, such as: telecom business, the railways, electricity cabins, uninterruptible power supplies, UPS, electricity and nuclear power plants, wind and solar energy etc.

Product Features of Rechargeable Flooded Battery

Cycle life

>2200 at 80% DOD

Self discharge rate


High charge acceptance performance

Wide operation


-40℃~ 70℃

Positive plate

 tubular type, with die-casting thick Pb-Ca grid, it has very good

corrosion resistance and very long service life


PVC-SiO2 separator imported from Europe, low internal resistance,

high pore rate and long life


electrolyte design

contain more electrolyte, space between plates and separators are

full of electrolyte thus means good heating capacity and avoid “thermal runaway”

Battery case

made of high strength PP and durable design

Safety valve

has good sensitivity, safe and reliable, equipped with double flame

arrester/acid filter

Specification of Rechargeable Flooded Battery

Voltage Per





Dry WeightWet Weight

576 x 212 x 827


Discharge CurrentInternal ResistanceCycle ServiceCharging Current
8000 A (5 sec)0.11 mΩ2.40 to 2.45 V(DC)/cell at 25℃300A
TerminalFloat charging VoltageContainer Material
F102.23 to 2.25V(DC)/cell at 25℃

A.S. (UL94-HB), and UL94-V0 is


Optimal Operating Temperature Range25℃± 5℃
Operating Temperature RangeDischarge: -15℃ ~50℃; Charge: 0℃~40℃; Storage: -15℃~50℃
Self Discharge

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

Please charge batteries before using.

Compliant Standards

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


Datasheet of Rechargeable Flooded Battery




Why Choose us?


1. About Us: The company professional to do batteries;



2. Equipment & Technology: The quality of VRLA battery and production is the biggest supplier in;



3. Service: Stable product quality, supply, the good faith management.



solar lights, garden lights, solar hybrid street lighting, solar photovoltaic power generation in various fields of emergency lighting, communication systems, power generation systems independent users, as well as road vehicles and other new energy sources.



Traction Forklifts


Golfs Cars




Solar System

Wind Energy



Chengyu headquartered in Liangshan industrial park, Liangshan county, birthplace of legendary novel<All Men Are Brothers>, covering an area of 39990㎡, its workshop takes 19060㎡, in combination with engineering and equipment, enable Chengyu Power to maximize productivity and ensure the supply of high quality products to the field of Transportation, IT, Telecommunications, renewable energy, oil and gas infrastructure, power production and distribution, military as well as consumer products.

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