Deka Marine Master 8G31DTM 12V 97.6Ah Deep Cycle Gel Marine Battery

Deka 8G31DTM 12V 98Ah Deep Cycle Gel Battery – Group 31

Deka

$406.95
SKU:
DEKA-8G31DTM
Availability:
Email sales@gmienergy.com for current availability
Shipping:
Calculated in Cart
Bulk Pricing:
Buy in bulk and save

Bulk discount rates

Below are the available bulk discount rates for each individual item when you purchase a certain amount

  • Buy 2 - 3 and get $10.00 off each item
  • Buy 4 or above and get $20.00 off each item
Voltage:
12V
Type:
Gel
Capacity:
98Ah
CCA:
550A
Group Size:
31
Group Size:
31M
Terminals:
SAE Studs
Terminals:
SAE Posts
Polarity:
+ Left / - Right
Deep Cycle:
Yes
Dual Purpose:
Yes
Length:
12.5" - 12.9"
Width:
6.5" - 6.9"
Height:
8.5" - 8.9"
Weight:
67.5 lbs
Capacity Group:
50 - 100Ah
Height:
9.0" - 9.9"
Adding to cart… The item has been added

Product Description

**Limited Quantities Available. Email sales@gmienergy.com for current stock level.**

Deka Group 31 Gel Deep Cycle Battery

The Deka 8G31DTM is engineered for applications where dependable deep-cycle performance matters every single day. This 12V Group 31 gel battery uses a fully recombinant gel-electrolyte system to deliver exceptional durability, superior cycle life, and safe, maintenance-free operation. With a 97.6Ah capacity and Power-Perform® full-frame plate design, it’s perfect for applications ranging from mobility devices to industrial equipment, and any environment where long-lasting energy storage is critical.

The 8G31DTM’s gel formulation virtually eliminates spills, corrosion, and gas emissions, making it ideal for indoor or enclosed locations. Its ultra-low self-discharge rate—less than 2% per month—ensures that equipment remains ready for use even after long periods of downtime. Whether you depend on your battery for mobility, off-grid power, or reliability in the workplace, the 8G31DTM delivers proven, long-term performance backed by East Penn’s trusted manufacturing quality.

Features & Benefits

  • Recombinant Gel Electrolyte Technology – Virtually eliminates spills, gassing, and terminal corrosion.
  • Group 31 Replacement – Direct-fit for many marine, RV, and commercial equipment applications.
  • 100% Maintenance-Free Operation – No need to check water or electrolyte levels.
  • Power-Perform Full-Frame Plates – Engineered for enhanced durability and long cycle life.
  • Thick Gel And Tight-Pack Design – Resists vibration damage in harsh operating environments.
  • Ultra-Low Self-Discharge – Less than 2% per month, ideal for seasonal or stored equipment.
  • Deep-Cycle Optimized Design – Built for daily discharge and recharge applications.
  • Spill-Proof And Indoor-Safe – Ideal for mobility, medical, or enclosed spaces.
  • Dual Terminals – SAE posts + 5/16” studs for universal connections across a wide range of uses.
  • Proudly Made in the USA – Manufactured by East Penn for trusted performance and quality

Why Choose Deka Marine Master Gel Batteries?

Deka Marine Master deep cycle gel batteries are designed for excellent performance and extended service life. The gelled electrolyte and valve-regulated design provide spill-proof safety and virtually maintenance-free operation, making them a dependable choice for both indoor and outdoor use. Full-frame Power-Perform® plates deliver exceptional cycle life and durability in deep-discharge applications while providing a very low self-discharge and superior resistance to vibration damage. Deka gel batteries are ideal for applications from mobility scooters & medical devices, to industrial equipment & renewable energy systems. Built in the USA by East Penn Manufacturing to exacting standards, they offer the reliability and quality you expect from the Deka brand.

Deka 8G31DTM
Gel Battery Specs
Voltage 12 Volts
Capacity 97.6Ah
Group Size 31 / 31M
Type Deep Cycle Gel
Cold Cranking Amps 550A
Marine Cranking Amps 780A
Reserve Capacity 180 Minutes
Terminals M8 Studs
(hardware incl.)
& SAE Posts
Polarity + Left / - Right
Length 12.94" (329 mm)
Width 6.75" (171 mm)
Height 8.50" (216 mm)
9.38" (238 mm)
w/terminals
Weight 68.5 lbs (31.1 kg)


Deka Marine Master 8G31DTM Datasheet
Deka Marine Master Series Information

Deka 8G31DTM Battery Cross-Reference

Group 31 Batteries w/Automotive Posts: 1031MF/PMF, 1131MF/PMF, 1231MF/PMF31M, 31M-AGM, 31MDP, 8A31DTM, 8G31DTM, D31M, DC31DT, DP31CS, NSB-AGM31M, ODX-AGM31M, PC2150M, SLI31AGM, SLI31AGMDPM, SLI31DP, SLI31DTMAGMDC, SLI31MDC, SLI31MDP, SLI31PA/SA, SLI31PHP/SHP, SRM-31, XCA31-1400, XTR12-155, XTR31-135.

Group 31 Batteries w/Studs or Bolt Terminals: 31M, 31M-AGM, 31MDP, 31‑PC2150S, 7T31, 7T31P,  8A31DTM, 8G31, 8G31DTM, CT2500, D31M, DC31DT, DP31CS, DP31DT, DURHR12-430C/FR-A, HEPPC2150T-M, NSB‑AGM31, NSB-AGM31M, ODX‑AGM31, ODX-AGM31M, MB137-120, MR137-120, PC2150M, SLI31AGMDP, SLI31AGMDPM, SLI31CS, SLI31DP, SLI31DTMAGMDC, SLI31MDC, SLI31MDP, SLI31PHP/SHP, SLR125, SRM-31, XCA31-1400, XTR12-155, XTR31-135.

Group 31 Batteries w/Dual Terminals: 31M, 31M-AGM, 31MDP, 8A31DTM, 8G31DTM, D31M, DC31DT, DP31CS, NSB-AGM31M, ODX-AGM31M, PC2150M, SLI31DP, SLI31AGMDPM, SLI31DTMAGMDC, SLI31MDC, SLI31MDP, SLI31PHP/SHP, SRM-31, XCA31-1400, XTR12-155, XTR31-135.

Important: Always confirm your battery's dimensions, terminal configuration, and specifications before purchase to ensure proper fit and performance.

Recommended Chargers for the 8G31DTM

NOCO Genius 10 Amp Charger & Maintainer

NOCO GENPRO 10 Amp Waterproof Charger & Maintainer

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

Warranty Information

1 Year Warranty

Product Videos

!