MK Battery Deka 8AGC2 6V 190Ah Deep Cycle AGM Battery

The MK Battery Deka 8AGC2 is a high-capacity 6V deep cycle AGM battery designed for applications requiring dependable rechargeable energy storage without the routine watering associated with conventional flooded lead-acid batteries.

Manufactured in the USA by East Penn Manufacturing, this battery features valve-regulated absorbed glass mat (AGM) technology, durable polypropylene construction, and forged terminals for secure electrical connections.

With a rated capacity of 190Ah at the 20-hour discharge rate, the 8AGC2 provides approximately 1.14kWh of nominal stored energy. Its sealed, valve-regulated construction makes it a practical choice for compatible solar energy storage, stationary battery banks, and other deep cycle power applications.

The AGM design immobilizes the electrolyte within fiberglass separators, reducing maintenance requirements while providing reliable deep cycle operation when used with properly configured charging equipment.

Key Features and Benefits

• 190Ah Deep Cycle Capacity: Rated at the 20-hour discharge rate for rechargeable energy storage applications.
• 6V Nominal Voltage: Suitable for building compatible 12V, 24V, and 48V battery banks.
• AGM Battery Technology: Absorbed glass mat construction immobilizes the electrolyte and supports low-maintenance operation.
• Valve-Regulated Design: Self-sealing vents help manage internal battery pressure.
• No Routine Watering: AGM construction eliminates the regular electrolyte watering required by flooded batteries.
• Deep Cycle Performance: Designed for repeated charging and discharging in compatible applications.
• Lead-Calcium Plate Alloy: Manufactured with lead-calcium battery plates.
• Forged Terminals and Bushings: Provide durable electrical connection points.
• Durable Polypropylene Housing: Designed for dependable service in appropriate battery installations.
• Wide Published Temperature Range: Manufacturer lists an operating range from -40°F to 140°F, subject to appropriate charging and operating conditions.
• Made in the USA: Manufactured by East Penn Manufacturing Co., Inc.

Valve-Regulated AGM Battery Technology

The MK Battery Deka 8AGC2 uses absorbed glass mat technology, a type of valve-regulated lead-acid battery construction.

Unlike conventional flooded lead-acid batteries, AGM batteries hold their electrolyte within absorbent fiberglass separators. This design reduces the need for routine maintenance and eliminates regular watering.

The battery includes self-sealing pressure-relief vents and must be charged using equipment configured for AGM battery chemistry.

Although the battery is valve-regulated, it is not intended to operate in a completely sealed, unventilated compartment. Installation must follow applicable battery safety and ventilation requirements.

Deep Cycle Energy Storage Applications

The Deka 8AGC2 is designed for applications requiring repeated charging and discharging rather than primarily for high-current engine starting.

Its 6V nominal voltage and 190Ah capacity make it suitable for properly designed battery banks using compatible charging equipment and electrical components.

Potential Applications

• Off-grid solar battery storage.
• Residential and remote DC energy storage.
• Compatible renewable energy battery banks.
• Stationary auxiliary power systems.
• Other deep cycle applications requiring AGM battery technology.

System compatibility depends on charging profiles, discharge requirements, battery bank design, and equipment manufacturer specifications.

Battery Capacity and Performance

Battery amp-hour capacity changes with the discharge rate. The Deka 8AGC2 has the following manufacturer-published ratings:

• 100-Hour Rate: 220Ah.
• 20-Hour Rate: 190Ah.
• 5-Hour Rate: 163Ah.

At the 20-hour rate, the nominal energy calculation is 6V × 190Ah = approximately 1.14kWh.

Actual usable energy depends on discharge rate, operating temperature, depth of discharge, battery age, and system efficiency.

Charging Requirements

The manufacturer specifies the following charging voltage ranges at 77°F (25°C):

• Cycle Charging Voltage: 6.9–7.3V.
• Float Charging Voltage: 6.7–6.8V.

Charging equipment must support valve-regulated AGM batteries and be configured according to the manufacturer's requirements.

Temperature compensation, charging current limits, and any additional charging procedures should be confirmed using the current manufacturer charging instructions for the exact battery model.

Important: Do not use flooded lead-acid charging settings or perform equalization charging unless specifically authorized by the battery manufacturer.

Product Specifications

Battery Bank Configurations

Multiple Deka 8AGC2 batteries can be connected in series to build higher-voltage battery banks when permitted by the manufacturer and system design.

• 12V Battery Bank: 2 batteries in series — 190Ah, approximately 2.28kWh nominal energy.
• 24V Battery Bank: 4 batteries in series — 190Ah, approximately 4.56kWh nominal energy.
• 48V Battery Bank: 8 batteries in series — 190Ah, approximately 9.12kWh nominal energy.

These calculations use the manufacturer's 20-hour capacity rating. Usable energy will be lower depending on the selected depth of discharge and operating conditions.

Note: This listing is for one 6V battery unless otherwise specified.

Installation and Safety Considerations

• Use a battery charger or solar charge controller configured for AGM lead-acid batteries.
• Provide ventilation appropriate for valve-regulated lead-acid batteries.
• Install using properly sized battery cables and overcurrent protection.
• Use compatible terminals and secure all electrical connections according to manufacturer instructions.
• Use suitable battery enclosures or trays that accommodate the battery dimensions and weight.
• Protect the battery from short circuits, excessive heat, and incompatible charging conditions.
• Use appropriately matched batteries when building series or parallel battery banks.
• Follow applicable electrical codes and manufacturer installation requirements.

Frequently Asked Questions