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6V and 12V Sealed AGM Starting & Deep Cycle Marine Batteries

Our deep cycle marine battery line includes include LifeLine, NorthStar, OPTIMA and Universal Power Group. We can ship sealed AGM batteries direct to your door or to any facility you are docking your boat for service and installation. If you are unsure which size battery you should be purchasing consider using our marine battery selector to assist in your search. Impact Battery also has a large selection of waterproof, multi-bank boat chargers.

Starting Batteries vs. Deep Cycle Batteries

Typical Boat that uses Deep Cycle Batteries

On the outside there really is no difference in appearance besides maybe the terminal type. However, once you get past the raw materials of the plastic case, lead, AGM material, and acid there are some fundamental differences.

Deep cycle batteries used in bass boats and speed boats as well as other applications such as RV's and golf carts are designed to provide a constant current over an extended period of time. To maintain the ability to supply power over longer periods of time the plates are made thicker. This initiates the deep cycle nature and allows discharge of up to 80% of their capacity routinely. They still have the ability to provide a short but less powerful burst of power compared to a similarly sized car battery, but this is not their primary function and is more like a byproduct.

As the name suggests, marine starting batteries are designed to turn over an engine by providing a high rate of current over a very short time period. These batteries cannot handle continuous load deep discharge situations. They will leave you wanting and will die a premature death when used for applications other than starting an engine. To achieve the necessary burst of current (CCA) these batteries need to lower their internal resistance. Generally speaking, this is accomplished by using thinner lead plates.

Dual Purpose starting / deep cycle AGM marine batteries try to maximize the Cold Cranking Amps (CCA), Reserve Capacity (RC) and Cycle Life. NorthStar, Optima Blue Tops and Odyssey batteries are the best in class for dual purpose specs. NorthStar batteries, which use 99.99% pure lead and are considered an ultra-premium AGM marine battery, lead in all three categories making them the market leader in deep cycle and starting power ability. Order your batteries online today!

Yes.. Weego can even jump a motor boat! Buy One Now before you get wet!

14 Item(s)
  1. $19.95

    The GCP1 is a Plug-N-Play AC Port Plug that integrates with any on-board battery charger without the need to modify existing wiring.
  2. $303.99

    NSB-AGM34M Pure Lead AGM Battery 1050CA, 134RC, 65AH
    • Cold Cranking Amps (CCA): 880
    • Dimensions (in): 10.9 x 6.75 x 7.76
    • Capacity Amp Hours: 65
    • Warranty: 4 Year
  3. $349.95
    As low as: $288.95

    12 Volt 80 Amp Deep Cycle GPL-24T Battery by LifeLine
  4. $327.99

    NSB-AGM24M Pure Lead AGM Battery 1000CA, 160RC, 76AH
    • Cold Cranking Amps (CCA): 840
    • Dimensions (in): 10.87 x 6.77 x 8.86
    • Capacity Amp Hours: 76
    • Warranty: 3 Year
  5. $369.95
    As low as: $308.95

    12V 100Ah Deep Cycle Lead Acid Battery by LifeLine
  6. $304.95

    The OPTIMA D27M Blue Top battery has low internal resistance, provides efficient output and is made by Johnson Controls.
    • Cold Cranking Amps (CCA): 800
    • Dimensions (in): 12.19 x 6.81 x 8.75
    • Capacity Amp Hours: 66
    • Warranty: 3 Year
  7. $379.99

    NSB-AGM27M Dual Purpose AGM Battery 1080CA, 195RC, 92AH
    • Cold Cranking Amps (CCA): 930
    • Dimensions (in): 12.44 x 6.77 x 8.86
    • Capacity Amp Hours: 92
    • Warranty: 3 Year
  8. $409.99

    NSB-AGM31M Pure Lead AGM Battery 1370CA, 220RC, 103AH
    • Cold Cranking Amps (CCA): 1150
    • Dimensions (in): 12.91 x 6.77 x 9.25
    • Capacity Amp Hours: 103
    • Warranty: 3 Year
  9. $468.95
    As low as: $398.95

    Group 31 12V 125Ah Deep Cycle Marine and RV Battery by LifeLine
  10. $398.95
    As low as: $338.95

    12V 105Ah Group 31 Deep Cycle Battery by LifeLine
  11. $284.95

    The OPTIMA D34M Blue Top battery has low internal resistance, provides efficient output and is made by Johnson Controls.
    • Cold Cranking Amps (CCA): 750
    • Dimensions (in): 10.06 x 6.88 x 7.94
    • Capacity Amp Hours: 55
    • Warranty: 3 Year
  12. $498.95
    As low as: $438.95

    This UB63800, L16 sized 6V 380Ah battery is used in Deep Cycle Solar, Standby, and Backup Power applications by Universal Power Group
  13. $539.95
    As low as: $448.95

    Supervisory Control and Data Acquisition 8D AGM Battery
  14. $39.95

    Fits standard Group 24 & 27 Size Batteries w/ External Battery Status Indicator and much more!
14 Item(s)