Rolls S12-128AGM AGM VRLA Deep Cycle Battery – 12V 115Ah (128Ah @ 100Hr)
Rolls S12-128AGM AGM VRLA Deep Cycle Battery – 12V 115Ah
High-capacity sealed AGM battery engineered for superior deep cycle performance, long service life, and dependable energy storage across renewable, backup, marine, and industrial applications.
Reliable High-Capacity Deep Cycle Power
The Rolls S12-128AGM delivers robust deep cycle performance with a 115Ah (20Hr) capacity and extended 128Ah (100Hr) rating, making it ideal for applications requiring sustained energy delivery and long runtime.
Built by Surrette Battery Company in Canada, this premium AGM battery is trusted worldwide for use in solar energy systems, UPS backup, marine power, and industrial equipment.
AGM-S Series Advantages
True Deep Cycle Performance
Optimized for repeated discharge cycles with excellent capacity retention.
Sealed AGM Technology
Maintenance-free and leak-proof design for safe indoor or remote installations.
Low Self-Discharge
Retains 91% charge after 3 months and 64% after 12 months.
Heavy-Duty Construction
ABS casing provides durability against vibration and harsh environments.
Advanced Engineering Features
High Capacity Design
Extended runtime for demanding applications.
Thick Plates
Improves cycle life and structural durability.
Corrosion Resistance
Enhances long-term reliability.
Pressure Valve System
Maintains safe internal pressure during charging.
Low Internal Resistance
Supports efficient charging and high output.
Maintenance-Free
No watering required under normal use.
Performance Characteristics
Temperature Performance
- 102% capacity at 40°C
- 85% capacity at 0°C
- 65% capacity at -15°C
Self-Discharge
- 91% after 3 months
- 82% after 6 months
- 64% after 12 months
Charging & Usage Guidance
Charging Specifications
- Recommended charge current: 23A
- Max charge current: 40.2A
- Bulk voltage: 14.5–14.9V
- Float voltage: 13.6–13.8V
Best Practices
- Recharge after each use
- Use AGM-compatible chargers
- Avoid charging frozen batteries
- Ensure proper ventilation
Applications
- Solar & renewable energy storage
- UPS and backup power systems
- Marine and RV applications
- Off-grid installations
- Industrial and commercial equipment
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🔋 What’s mAh All About?
🔋 What’s mAh All About?
mAh stands for milliamp hours—basically, how much "fuel" your battery can hold. A higher or lower mAh than your original battery? No worries! 🙌 It won’t affect charging or operation—just means your device might run a bit longer or shorter between charges. Still 100% compatible. Still 100% awesome. 💪✨
Before ordering please read
Before ordering please read
Ensure the original battery model number is mentioned in our product description and verify that your device model number is also listed in the description.
How to Look after your new lithium battery!!
How to Look after your new lithium battery!!
See how to look after your battery if its lithium Lithium Care
Delivery and Shipping
Delivery and Shipping
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Technical Specifications
| Battery Details | |
|---|---|
| Voltage | 12V |
| Capacity (20Hr) | 115Ah |
| Capacity (100Hr) | 128Ah |
| Reserve Capacity (RC @ 25A) | 165 Minutes |
| Battery Type | AGM (Sealed Lead Acid) |
| Container / Cover | ABS |
| Terminals | M8-TP08 |
| Handles | Strap |
| Weight | 32.7kg |
| Length | 328mm |
| Width | 175mm |
| Height (incl. terminals) | 237mm |
| Performance & Electrical | |
| Cold Crank Amps (CCA) | 605A |
| Marine Crank Amps (MCA) | 720A |
| Maximum Discharge Current | 1100A |
| Recommended Charge Current | 23A |
| Maximum Charge Current | 40.2A |
| Charging Voltage (Cycle) | 14.5V – 14.9V |
| Charging Voltage (Float) | 13.6V – 13.8V |
| Capacity by Hour Rate | |
| 100 Hour Rate | 128Ah / 1.28A |
| 20 Hour Rate | 115Ah / 5.75A |
| 10 Hour Rate | 99Ah / 9.90A |
| 8 Hour Rate | 96Ah / 12.0A |
| 5 Hour Rate | 87Ah / 17.4A |
| Temperature Performance | |
| 40°C | 102% Capacity |
| 25°C | 100% Capacity |
| 0°C | 85% Capacity |
| -15°C | 65% Capacity |
| Self Discharge | |
| After 3 Months | 91% |
| After 6 Months | 82% |
| After 12 Months | 64% |
| Typical Applications | |
| Applications | Solar Energy Systems, UPS Backup, Marine Power, Industrial Equipment, Renewable Energy Storage |
OEM Battery Cross Reference
| Model | Voltage | Capacity | Type |
|---|---|---|---|
| Rolls S12-128AGM | 12V | 115Ah / 128Ah | AGM Deep Cycle |
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