Product Description
Deka 8G31DTM Deep-Cycle Gel Battery
The Deka Marine Master 8G31DTM is a 12‑volt gel deep‑cycle battery (Group 31) engineered for both industrial and recreational applications. Built with recombinant gel electrolyte and Power‑Perform® full‑frame plates, it offers exceptional cycle life and durability. Ideal for demanding environments—from RV's, marine use or commercial purposes—it delivers reliable, long-lasting power. With features like ultra‑low self‑discharge (<2%/month) and maintenance‑free operation, the 8G31DTM ensures dependable performance and longevity.
8G31DTM Features:
- Recombinant Gel Electrolyte Technology – Virtually eliminates spills, gassing, and terminal corrosion
- 100% Maintenance‑Free Operation – No need to check water or electrolyte levels
- Power‑Perform® Full‑Frame Plates – Designed with a specialized oxide formulation for enhanced durability and longer cycle life
- Thick Gel and Tight‑Pack Design – Resits vibration damage and extends operational life
- Ultra‑Low Self‑Discharge – Less than 2% per month, ideal for seasonal or infrequent use
- Nut & Bolt Terminals – Ensures secure, reliable connections; hardware included
- Proudly Made in the USA – Manufactured by East Penn and backed by a 1‑Year Warranty
Why Choose the 8G31DTM?
The 8G31DTM stands out in Deka’s Marine Master line for its rugged, dual‑purpose performance. Built with recombinant gel technology and Power‑Perform® plates, it delivers superior cycle life and reliability in demanding environments. Its sealed, maintenance‑free design and low self‑discharge make it perfect for applications with intermittent usage—like marine systems, RVs, or seasonal equipment. Whether you're relying on it for engine starting, deep‑cycle use, or backup power, this battery offers dependable durability and comes with the reassurance of domestic manufacturing and a one-year warranty.
Applications:
- Marine: House battery banks, trolling motors, lighting, bilge pumps, and onboard electronics
- RVs: Durable power for appliances, electronics, and entertainment systems
- Industrial Equipment: Floor scrubbers, forklifts, pallet jacks, scissor lifts
- Solar Energy Storage: Off‑grid systems requiring robust deep‑cycle performance
- Standby Power: Emergency lighting, UPS systems, telecom backup
- Large Mobility Devices: Power wheelchairs, track chairs, and similar applications
8G31DTM Battery Cross‑Reference
Group 31 replacement for models: 1031MF/PMF, 1131MF/PMF, 1231MF/PMF, 31‑PC2150S, 7T31, 7T31P, 8A31DTM, 8G31, CT2500, DC31DT, DP31CS, DP31DT, DURHR12-430C/FR-A, HEPPC2150T-M, MB137-120, MR137-120, NSB‑AGM31, ODX‑AGM31, SLI31AGM, SLI31AGMDPM, SLI31CS, SLI31DTMAGMDC, SLI31DP, SLI31MDC/MDCP, SLI31PA/SA, SLI31PHP/SHP, SLR125, XCA31-1400, XTR31-135.
Note: The Marine Master 8G31DTM is the same as the Intimidator 8G31, but with the addition of marine terminal studs.
Important: Always confirm your battery's dimensions, terminal configuration, and specifications before purchase to ensure proper fit.
| Voltage | 12V |
| Type | Gel Deep Cycle |
| Capacity | 97.6 Ah |
| Cold Cranking Amps |
550A |
| Group Size | 31 / 31M |
| Terminals | 5/16" Studs (hardware included) & SAE Posts |
| Polarity | + Left / - Right |
| Length | 12.95" |
| Width | 6.73" |
| Height | 8.50" 9.37" w/terminals |
| Weight | 68.5 lbs |
| Warranty | 1 Year |
Extend the Life of Your Battery
Keeping your battery charged between uses with a quality maintainer is essential for maximizing its lifespan. Save 10% on a NOCO Genius 10 or the waterproof NOCO GENPRO 10 Chargers & Maintainers when bundled with battery using the option above.
Deka Marine Master Information
Deka Deep-Cycle Gel Battery Series Spec List
East Penn Gel Battery SDS
