VMAX MR86-50 12V AGM Marine Battery (50Ah)


MSRP: $169.99
(Save $20.06)
Free Shipping
Group Size:
In Stock
Adding to cart… The item has been added

Product Description

The VMAX MR86-50 is a heavy duty 12V AGM battery with 500 amp hours (Ah) of capacity. VMAX 12V AGM batteries are made with top grade plates and plate separators to provide superior performance and long life deep cycle capabilities.  This Group 21R AGM marine battery with an MCA rating of 450 amps make the MR86-50 dual purpose battery a great fit for endless applications.


  • Sealed Construction
    The unique construction and sealing techniques of a VMAX battery guarantee leak proof operation in any position with no adverse effect to capacity or service life. VMAX battteries are classified as non-spill able, non-hazardous, dry batteries making them NOT restricted for Surface, Maritime and Air Transport.
  • Electrolyte Suspension system
    A VMAX charge tank utilizes an electrolyte suspension system consisting AGM (Absorbed Glass Matt) of a high porosity that totally absorb and contain the electrolyte. No silica gels or any other contaminants are used.
  • Gas Generation Control
    A VMAX tank incorporates a built-in design that controls gas generation and induces recombination of more than 99% of gases generated during float usage.
  • Maintenance Free Operation
    There is no need to check specific gravity of the electrolyte or add water to a VMAX battery during float service life. In fact, there is no provision for this type of maintenance.
  • Low Pressure Valve Regulated System
    All VMAX batteries are equipped with safety release valves, designed to operate between 0.98-196.1kpa and automatically reseal. Hence, there is never an excessive accumulation of gas within the battery.
  • Heavy Duty Grids
    Heavy duty lead tin alloy grids manufactured with virgin lead provide an extra margin of performance and service life in either float or cyclic applications, even after repeated over discharges.
  • High Cyclic Service Life
    VMAX batteries are known to deliver one of the highest numbers of discharge / recharge cycles.
  • Long Float Service Life
    VMAX batteries have an expected life span of 8 to 10 years in float service applications.
  • Low Self Discharge
    The self-discharge rate of a VMAX AGM battery at room temperature is approximately 1-2% of rated capacity per month (compared to 2-3% for most other AGM batteries and 15-20% for Lead Acid batteries).
  • Versatile Operating Temperatures
    A VMAX battery may be operated over a broad range of ambient temperatures.
  • Ultra Low Resistance
    VMAX Batteries' Ultra Low Resistance make it up to 99% efficient (compared to 85-95% as in Lead Acid Batteries and 97% in most other GEL and AGM batteries).
  • Higher Power Density
    A special assembly technology is used to enhance power density to a considerable level.
  • Reliable Construction
    The extra strong construction ABS container reduces case bulging and plate warping, ensuring long life and high performance.

BCI Group 21R* (- on L.H.S. & + on R.H.S)
* Matching is based on closest dimensional specifications.

6mm hardware is included. Standard SAE Post Adapters are also available.

Recommended Charging Options:

  • Vehicle Alternator: 14V-15V
  • RV converter: 14V-15V
  • Solar Panel: 60W-225W
  • Wind Turbine: 60W-225W
  • Charge Controller: 10A-UP

Warning: Do not use a charger with smaller amperage than the recommended charging current shown below. Low amperage maintainers should ONLY be used to maintain a fully charged battery but NEVER as a charger.

VMAX MR86-50 Specs
Voltage 12V
Capacity 50Ah
RC (min) 100
HCA 840A
MCA 450A
Terminal Posts 6mm (Included)
(L x W x H)
Weight 32 lbs
Charging Current 3-15A
Charging Voltage 14.4V - 14.9V
Float Voltage 13.5V - 13.8V
Discharge Temp Range -4°F - 140°F
Charging Temp Range 14°F - 140°F
Storage Temp Range -4°F - 140°F

VMAX MR86-50 12 Volt AGM Battery (50Ah) | VMAX Marine Battery

Warranty Information

1 Year Warranty

Product Videos