Rolls Surrette 4-KS-21PS 4V Solar Flooded Lead Acid Battery
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4V Industrial Deep-Cycle Battery engineered for large solar, off-grid, and commercial energy storage systems.
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High-Capacity Energy Storage designed for long-duration discharge and reliable power delivery in large battery banks.
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Heavy-Duty Plate Construction built for deep cycling, extended service life, and consistent performance under frequent discharge.
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Strong Reserve Power Output ideal for continuous-load and mission-critical backup power applications.
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Rugged Dual-Wall Housing with polypropylene/HDPE construction and flame-arrestor vent caps for safe, long-term operation.
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Rolls Surrette 4 KS-21PS 4V Flooded Deep Cycle Battery
The Rolls 4 KS-21PS is a heavy-duty 4-volt industrial deep-cycle battery built for demanding energy storage environments. Designed for solar arrays, off-grid power systems, renewable energy installations, and commercial backup applications, it delivers dependable long-duration power where reliability and consistency are essential.
Constructed with robust internal plates, the 4 KS-21PS is optimized for repeated deep-cycle operation, maintaining stable output and long service life under frequent discharge conditions. Its strong reserve capacity makes it an excellent choice for large battery banks that require sustained energy delivery over extended periods.
Housed in a rugged dual-wall polypropylene and HDPE enclosure, the battery is engineered for durability, safety, and longevity. Flame-arrestor vent caps support proper ventilation and routine maintenance, ensuring dependable performance in harsh or high-demand environments. The Rolls 4 KS-21PS is a proven solution for large-scale energy storage systems that demand strength, endurance, and long-term deep-cycle reliability.
4 KS-21PS Specifications
- Series: 5000
- Model: 4 KS 21P
- Volts: 4V
- Design: SPEC
- Cells: 2
- Plates/Cell: 21
- Terminal Type: Flag
- Included Hardware: Stainless Steel Hex Cap Screw, Nut, Lock & Flat Washer
- Terminal Size & Thread: 5/16"-18
- Cables: 19" 4/0 interconnect cables
- Warranty: 5 Years
Charging Specifications
- Charge Voltage Range: 2.45–2.50 V/cell @ 25°C (77°F)
- Float Voltage: 2.25 V/cell @ 25°C (77°F)
- Self-Discharge Rate: 5–10% per month @ 25°C (77°F)
Capacity & Performance
- Amp-Hour @ 100 hr: 1842 AH
- Amp-Hour @ 72 hr: 1740 AH
- Amp-Hour @ 50 hr: 1648 AH
- Amp-Hour @ 20 hr: 1428 AH
- Amp-Hour @ 15 hr: 1329 AH
- Amp-Hour @ 10 hr: 1269 AH
- Amp-Hour @ 8 hr: 1226 AH
- Amp-Hour @ 5 hr: 1141 AH
- Amp-Hour @ 1 hr: 644 AH
- Cold Cranking Amps (CCA): 3349 @ 0°F / –18°C
- Marine Cranking Amps (MCA): 4187 @ 32°F / 0°C
- Reserve Capacity (RC @ 25A): 3110 min
- Reserve Capacity (RC @ 75A): 1141 min
Physical Specs
- Weight: 227 lbs (103 kg)
- Length: 14" (356 mm)
- Width: 9" (229 mm)
- Height (Incl. Terminals): 25.12" (638 mm)
- Electrolyte Reserve: 3.75" (95 mm)
| Width | 9.38 |
|---|---|
| Height | 24.75 |
| Length | 15.75 |
| Condition | New |
| Country of Manufacture | Canada |
| Brand | Rolls Surrette |
| Warranty Life | 5 |
| Chemistry | Flooded |
| Output Voltage | 4V |
| Amperage(20 hours) | 1148 |
| Amperage(100 hours) | 1481 |
| Rechargeable | Yes |
| CCA | 2754 |
| Voltage | 4V |
