XTR31-135
Superior Plates with an expected life span of 10 to 12 years in float service applications.
VMAX XTR31-135 AGM Dual Purpose Battery
High Cranking Power Meets True Deep Cycle Performance
The VMAX XTR31-135 is the ultimate dual-purpose Group 31 AGM battery, combining exceptional starting power with deep cycle endurance in one rugged design. With a massive 1500 Marine Cranking Amps for confident engine starts and 135Ah / 265 minutes of reserve capacity for extended run time, it’s the perfect choice when you need both high cranking performance and long-lasting energy. Built with military-grade plates and 100% virgin lead, it delivers unmatched durability, extreme vibration resistance, and years of reliable service in marine, RV, and industrial applications.
Key Benefits
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Dual-Purpose Design – Delivers both high starting power and deep cycle capacity.
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Massive Cranking Power – 1500 MCA ensures quick, confident engine starts. (1500MCA/1150CCA)
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Long Runtime – 135Ah capacity and 265 minutes of reserve power.
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Military-Grade AGM Technology – Heavy-duty plates with premium Absorbed Glass Mat separators for extreme durability.
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True Deep Cycle Performance – Withstands repeated deep discharges without capacity loss.
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Maintenance-Free & Spill-Proof – Safe for indoor or enclosed spaces, mountable in any position.
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Rugged, Vibration-Resistant Construction – Designed for harsh marine, RV, and off-road environments.
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Low Self-Discharge – Holds charge for months when not in use.
Applications
Ideal for:
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Boats requiring both starting and deep cycle capacity
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Trolling motors (12V, 24V, 36V systems)
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Marine electronics (fish finders, GPS, sonar, chartplotters)
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RV house battery banks with starting needs
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Golf Carts, UTV, Low Speed Electric vehicles
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Trucks, Trailers, Commercial Vehicles
Charging Compatibility & Recommendations
This battery works with any high-quality AGM charger or RV converter that meets the following:
For maximum lifespan and performance, pair with a VMAX smart charger.
RV note: Compatible with any RV converter/charger designed for sealed lead acid/AGM batteries.
Specifications
General
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Model: XTR31-135
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BCI Group Size: 31
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Battery Type: AGM Dual Purpose (Starting + Deep Cycle)
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Voltage: 12V
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Capacity: 135Ah @ 20hr rate
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Reserve Capacity (RC): 265 minutes @ 25A
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Marine Cranking Amps (MCA): 1500
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Max Discharge Current: 1000A (5 seconds)
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Service Life (Float Mode): 10–12 years
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Cycle Life (Approx.): ~300 cycles @ 100% DOD; ~600 @ 75% DOD; ~1000 @ 50% DOD; ~2600 @ 25% DOD; 3500+ @ 10% DOD
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Self-Discharge Rate: 1–2% per month @ room temperature
Discharge Ratings
Physical
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Dimensions: 12.9"Wx6.77"Dx8.66"h/9.84th
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Weight: 78 lbs
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Case Material: Heavy-duty ABS (vibration & impact resistant)
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Terminal Type: SAE + 5/16" Stud (nuts and washers included)
Electrical
Charging Parameters
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Bulk/Absorb Voltage: 14.4V–14.9V
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Float Voltage: 13.2V–13.8V
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Recommended Charger Current: 13–20A (10–15% of 20hr Ah rating)
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Charger Type: AGM-compatible multi-stage smart charger
Certifications & Safety
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Spill-Proof & Leak-Proof: Sealed, maintenance-free construction
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Non-Hazardous Classification: Suitable for air, sea, and ground transport
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Shock & Vibration Resistant: Designed for marine, off-road, and industrial use
Warranty & Shipping
Order Today
Get the best of both worlds—powerful cranking and all-day deep cycle performance—in one rugged, maintenance-free battery. Order your VMAX XTR31-135 today and experience the unmatched versatility of the ultimate dual-purpose Group 31 battery.
Recommended Charging Options:
- AC
Chargers: Any Quality Brand AGM-
Smart & Microprocessor controlled- charger with the recommended specs above
can be used.
- Vehicle Alternator: 14V-15V.
- RV Converter: 14V-15V.
- Solar Panel: 175W-450W.
- Wind Turbine: 175W-450W.
- Charge Controller: 15A-UP
* Warning:
Do not use a charger with smaller amperage than the recommended Charging
Current shown above.
Maintainers should ONLY be used to maintain a fully charged battery but NEVER
as a charger.
**Total Height including terminal post.
Operating Temperature Range:
- Discharge: -4~140F
- Charge: 32~120F
- Storage: -4~140F
Temperature Compensation:
- Cycle
use: -30mV/C
- Standby
use: -20mV/C
UPC:030955763507
BCI Group Codes*:
Matching Termination: 31 (+ on L.H.S. & -
on R.H.S)
* Matching is based on closest
dimensional specifications. Differences in hold downs and termination may
require some accommodations and/or the extension of one or both vehicle's
battery cables.
