Rolls S6 L16-HC 6V 445Ah Flooded Deep Cycle Lead Acid Battery

6V Deep Cycle Battery | 445Ah at 20-Hour Rate | Approximately 2.67kWh Nominal Capacity | Flooded Lead Acid | L16 Format | Series 4000

The Rolls S6 L16-HC is a high-capacity 6V flooded lead acid deep cycle battery designed for renewable energy storage and applications requiring dependable repeated charge and discharge cycles.

Part of the Rolls FLA Series 4000, this L16-format battery delivers 445Ah at the 20-hour rate, equivalent to approximately 2.67kWh of nominal stored energy. Its heavy-duty construction, serviceable flooded design, and deep cycle performance make it a practical choice for compatible solar battery banks, off grid power systems, and stationary energy storage applications.

The battery features a durable polypropylene container, vented construction with integral flame arrestor vent caps, and LT terminals with included stainless steel connection hardware.

Multiple batteries can be connected in properly designed series and parallel arrangements to build higher-voltage or higher-capacity battery banks.

Key Features and Benefits

• 445Ah Deep Cycle Capacity: High-capacity energy storage rated at the 20-hour discharge rate.
• 6V Nominal Voltage: Suitable for building compatible 12V, 24V, and 48V battery banks.
• Approximately 2.67kWh Nominal Energy: Provides substantial stored energy for renewable energy applications.
• Flooded Lead Acid Technology: Serviceable battery construction for applications where routine maintenance is practical.
• Rolls Series 4000: Designed for deep cycle operation and repeated charging and discharging.
• L16 Battery Format: Established battery size for stationary deep cycle energy storage.
• Heavy-Duty Polypropylene Construction: Impact-resistant container and cover.
• Vented Design: Integral flame arrestor vent caps.
• LT Terminals: Includes stainless steel connection hardware.
• Flexible Battery Bank Configuration: Can be connected with compatible batteries in properly designed series or parallel arrangements.
• 3-Year Manufacturer Warranty: Backed by Rolls' published Series 4000 warranty term, subject to manufacturer conditions.

Designed for Deep Cycle Energy Storage

Unlike batteries primarily designed for engine starting, the Rolls S6 L16-HC is engineered for deep cycle applications where stored electricity is discharged and replenished regularly.

Its high amp-hour capacity makes it suitable for battery banks supporting solar charge controllers, compatible inverter/chargers, and other stationary DC energy storage equipment.

Battery bank voltage and capacity depend on the number of batteries installed and how they are connected.

Common Applications

• Off grid solar systems.
• Solar battery banks for cabins and remote properties.
• Residential renewable energy storage.
• Stationary backup battery banks with compatible equipment.
• Remote power systems.
• Other deep cycle applications requiring serviceable flooded lead acid batteries.

Battery Bank Configuration

The Rolls S6 L16-HC has a nominal voltage of 6V. Multiple batteries may be connected in series to achieve a higher battery bank voltage.

• 12V Battery Bank: 2 batteries connected in series — 445Ah, approximately 5.34kWh nominal energy.
• 24V Battery Bank: 4 batteries connected in series — 445Ah, approximately 10.68kWh nominal energy.
• 48V Battery Bank: 8 batteries connected in series — 445Ah, approximately 21.36kWh nominal energy.

Note: These are nominal energy calculations based on the 20-hour amp-hour rating. Usable energy depends on discharge rate, depth of discharge, temperature, battery age, and system efficiency. Batteries are sold individually unless otherwise specified.

Charging and Maintenance Requirements

As a flooded lead acid battery, the Rolls S6 L16-HC requires an appropriately configured charging system and regular maintenance.

The manufacturer specifies a recommended charge current of 50A and maximum charge current of 85A, along with cell-level charging and float voltage ranges at 25°C (77°F).

Charging Specifications

• Charge Voltage: 2.45–2.50V per cell at 25°C (77°F), equivalent to 7.35–7.50V per 6V battery.
• Float Voltage: 2.25V per cell at 25°C (77°F), equivalent to 6.75V per 6V battery.
• Recommended Charge Current: 50A.
• Maximum Charge Current: 85A.
• Self-Discharge: Approximately 5–10% per month at 25°C (77°F).

Flooded lead acid batteries require appropriate ventilation, electrolyte monitoring, and maintenance in accordance with the manufacturer's instructions. Charging equipment must support the correct battery chemistry and charging profile.

Product Specifications

Installation and Safety Considerations

• Install in a suitable, well-ventilated battery enclosure or designated battery area.
• Use charging equipment configured for flooded lead acid batteries and the correct system voltage.
• Follow manufacturer recommendations for electrolyte levels, maintenance, and charging.
• Use properly sized battery cables, overcurrent protection, and compatible terminals.
• When building a battery bank, use appropriately matched batteries and follow manufacturer guidance for series and parallel configurations.
• Protect the battery from short circuits, sparks, flames, and incompatible charging conditions.
• Provide suitable lifting and handling equipment for the 122.5 lb battery.

Important: This is a serviceable flooded lead acid battery, not a sealed AGM or lithium battery. It requires ventilation and periodic maintenance. Usable energy is less than nominal stored energy and varies with operating conditions.

Frequently Asked Questions