MK Battery Deka 8A31DT 12V 104Ah Deep Cycle AGM Battery – 8A31DT-DEKA
MPN No: 8A31DT-DEKA
Expected ship date Nov 09 - 16
In Stock
347.59
-13%
$302.25
You will not be able to undo this action.

U.S. Warehouse
Trusted by Thousands
Expert U.S. Support

8A31DT-DEKA
MPN No: 8A31DT-DEKA
Expected ship date Nov 09 - 16
In Stock
347.59
-13%
$302.25
The MK Battery Deka 8A31DT is a durable, maintenance-free 12V 105Ah deep cycle AGM battery designed to deliver dependable power for deep-cycle energy storage applications. Manufactured in the USA by East Penn Manufacturing, this Group 31 battery uses advanced Absorbed Glass Mat (AGM) technology and a sealed, valve-regulated design for reliable performance without routine watering.
With a 105Ah capacity at the 20-hour rate, rugged polypropylene construction, and dual SAE/stud terminals, the Deka 8A31DT provides a practical energy storage solution for compatible solar battery systems, RVs, marine equipment, and auxiliary power applications.
12V Deep Cycle AGM Battery: Designed for repeated charging and discharging in deep-cycle applications.
105Ah Capacity: Rated at the 20-hour discharge rate, providing approximately 1.26kWh of nominal energy storage.
Maintenance-Free AGM Technology: Sealed, valve-regulated construction eliminates routine water refilling.
Group 31 Size: Standard battery group format suitable for compatible battery compartments and installations.
Dual SAE/Stud Terminals: Provides flexible connection options for compatible electrical systems.
Non-Spillable Design: Rated non-spillable under ICAO, IATA, and DOT classifications.
Wide Operating Temperature Range: Rated for temperatures from -40°F to 140°F.
Durable Construction: Lead-calcium plate alloy, forged terminals, and polypropylene case.
Made in the USA: Manufactured by East Penn Manufacturing.
| Specification | Details |
|---|---|
| Brand | MK Battery / Deka |
| Model | 8A31DT |
| MPN | 8A31DT-DEKA |
| Battery Type | Deep Cycle AGM |
| Technology | Valve-Regulated Lead Acid (VRLA) |
| Battery Group | Group 31 |
| Nominal Voltage | 12V |
| Capacity (C/100) | 110Ah |
| Capacity (C/20) | 105Ah |
| Capacity (C/5) | 86Ah |
| Nominal Energy | 1,260Wh (1.26kWh) at C/20 |
| Plate Alloy | Lead Calcium |
| Terminal Type | S/X (SAE/Stud) |
| Case Material | Polypropylene |
| Cycle Charge Voltage | 13.8–14.6V at 77°F |
| Float Charge Voltage | 13.4–13.6V at 77°F |
| Operating Temperature | -40°F to 140°F |
| Length | 12.93 in. |
| Width | 6.74 in. |
| Height | 9.40 in. (including terminals) |
| Weight | 67.5 lbs. |
| Manufacturer | East Penn Manufacturing |
| Country of Manufacture | USA |
The MK Battery Deka 8A31DT is suitable for appropriately sized and configured deep-cycle power systems, including:
Solar energy storage and small off-grid systems
RV and camper auxiliary battery systems
Marine house battery applications
Backup and standby power systems
Auxiliary electrical equipment
Other compatible 12V deep-cycle applications
The Deka 8A31DT combines sealed AGM construction with dependable deep-cycle performance. Its valve-regulated design minimizes routine maintenance, while the lead-calcium plate construction and robust terminals provide durability for demanding electrical applications.
For solar energy storage, the battery can be used with compatible lead-acid charge controllers and inverters configured for its specified charging requirements. Multiple batteries may be connected in appropriately engineered battery banks when higher system voltage or storage capacity is required.
Important: The 1.26kWh rating represents nominal stored energy, not guaranteed usable energy. Actual usable capacity depends on discharge rate, depth of discharge, temperature, and battery condition. Use an AGM-compatible charging profile and verify system compatibility before installation.