SKU:MR137

VMAXTANKS MR137 12V 120Ah AGM Deep Cycle Marine Battery

Name: VMAXTANKS MR137 12V 120Ah AGM Deep Cycle Marine Battery
Brand: VMAX USA
SKU: MR137
Price: 249.99 USD
Availability: InStock

$249.99 USD

$249.99 USD ~~$269.99 USD~~

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Vmaxtanks MR137 AGM Deep Cycle

12V 120Ah Group 31 Marine Battery

The Vmax MR137-120 Group 31 AGM marine battery is the perfect solution for reliable, long-lasting power on the water. Designed for boats and trolling motors, this 12V deep-cycle battery provides consistent energy for all marine needs. Maintenance-free and built to withstand harsh conditions, it ensures you stay powered during extended fishing trips or offshore excursions.

Ideal for marine use, the Vmax MR137-120 also supports off-grid solar systems, RVs, electric vehicles, and backup power solutions. Offering exceptional longevity and high discharge rates, this AGM battery delivers dependable performance in any environment. Choose the Vmax MR137-120 for reliable power wherever your adventures take you.

1-Year Manufacturer's Replacement Warranty.

Connect in Series or Parallel

BCI GROUP: 31

Specifications:

Nominal Voltage: 12V
Rated Capacity: 120Ah @ 20-hour discharge rate
Reserve Capacity (RC): 230 minutes (at 25A)
PHCA (Pulse Hot Cranking Amps): 1740A
MCA (Marine Cranking Amps): 900A
Internal Resistance: ≤ 6.0 mΩ
Dimensions:
- Length: 12.9 inches (328 mm)
- Width: 6.8 inches (173 mm)
- Height: 8.5 inches (216 mm)
- Total Height (including terminal post): 8.7 inches (221 mm)
Weight: 75 lbs (34 kg)
Terminal Posts: M8 (8mm x 1.25) (Included)

Charging Details:

Charging Current: 8A - 35A
Charging Voltage (Bulk Charge): 14.4V to 14.9V
Charging Voltage (Float): 13.5V to 13.8V

Recommended Charging Options:

AC Chargers: Any quality AGM Smart & Microprocessor-controlled charger with the recommended specifications.
Vehicle Alternator: 14V-15V
RV Converter: 14V-15V
Solar Panel: 175W-450W
Wind Turbine: 175W-450W
Charge Controller: 20A or higher

Warning: Do not use a charger with a lower amperage than the recommended charging current shown above. Small maintainers should ONLY be used to maintain a fully charged battery, NEVER as a charger.

Operating Temperature Range:

Discharge: -4°F to 140°F (-20°C to 60°C)
Charge: 14°F to 140°F (-10°C to 60°C)
Storage: -4°F to 140°F (-20°C to 60°C)

Temperature Compensation:

Cycle Use: -30mV/°C
Standby Use: -20mV/°C

Applications:

Marine use (boats, trolling motors)
Off-grid solar systems
RV and camper energy storage
Electric vehicles (EVs)
Backup power solutions

All VMAXTANKS AGM Batteries Feature:

Sealed Construction
The unique construction and sealing techniques of VMAX tanks guarantee leak-proof operation in any position with no adverse effect on capacity or service life. VMAX tanks are classified as non-spillable, non-hazardous, dry batteries, making them NOT restricted for Surface, maritime, or Air Transport.
Electrolyte Suspension system
VMAX tanks utilize an electrolyte suspension system consisting of AGM (Absorbed Glass Matt) of high porosity that totally absorbs and contains the electrolyte. No silica gels or other contaminants are used.
Maintenance Free Operation
During the float's service life, there is no need to check the electrolyte's specific gravity or add water to VMAXTANKS™.
Reliable, Rugged Construction
The extra strong ABS container reduces case bulging and plate warping, ensuring long life and high performance.
Low-Pressure Valve Regulated System
All VMAXTANKS™ are equipped with safety release valves, designed to operate between 0.98 and 196.1kpa and automatically reseal. Hence, there is never an excessive accumulation of gas within the battery.
Heavy Duty Military Grade Grids
Heavy-duty lead tin alloy grids provide an extra margin of performance and service life in either float or cyclic applications, even after repeated over-discharges.
Cyclic Service Life
VMAX is known to deliver one of the highest numbers of discharge/recharge cycles. Depending on the use and average depth of discharge, it can offer an average of:

Number Of Cycles Depth of Discharge

300 100%

600 75%

900 50%

1500 25%

3500+ 10%
Float Service Life
VMAXTANKS™ has an expected life span of 8 to 10 years in float service applications.
Low Self Discharge
The new VMAX tanks' self-discharge rate 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).
Operating Temperature
VMAXTANKS™ may be operated over a broad range of ambient temperatures.
Ultra Low Resistance
VMAXTANKS™ Ultra Low Resistance makes 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.