SR28-12 Storage lead acid battery

ModelVoltageCapacityWeightLengthWidthHeightTotal HeightTerminal type

12v 28ah Storage lead acid battery

Valve regulated lead acid series ups batteries are designed with AGM (Absorbent Glass Mat) technology, high performance plates and electrolyte to gain extra power output for common power backup system applications.


Capacity77°F(25℃)20 hours rate(1.4A 10.5V)28.0Ah
10 hours rate(2.7A 10.5V)27.0Ah
5 hours rate(4.8A 10.5V)24.0Ah
1 hour rate(20.5A 9.6V)20.5Ah
Internal ResistanceFull charged battery 77°F(25℃):8m
Capacity affected by Temperature(20 hour rate)104°F(40℃)102%
Self-Discharge(68°F(20℃)Capacityafter 3 month storage90%
Capacity after 6 month storage80%
Capacity after 12 month storage60%
Max discharge current77°F(25℃):300A(5S)
Charge(Constant Voltage)Float:13.6 to 13.8V/77°F/(25℃)
Cycle:14.5 to 14.9V/77°F/(25℃)
Max Current:7A

Battery Structure

1. Container/Cover: Made of UL94HB and LU 94V-0 ABS Plastic

2. Negative Plates: Use the special PbCa alloy grids, optimize the recombination efficiency and less gassing.

3. Separator: Import high quality AGM separator.

4. Positive Plates: PbCa grids minimize corrosion and prolong life.

5. Terminal post: Cooper material with maximum conductivity, enhance the high current rapidly.

6. Vent Valve: Allows the release of excess gas automatically for safety.

Solar street light system, solar power home system, Photovoltaic system, Alternative energy system, Electric Utility, Outdoor control equipment, Railroad Utility, control systems, power systems, wind energy systems, telecommunications/communication systems & ups system & etc.


Excellent safety performance.

Good discharging performance.

Good stock-proof performance.

Good impact-proof performance.

Good resistance to over discharge.

Good resistance to overcharge.

Good resistance to high current.

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Valve Regulated Lead Acid Battery

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