Tough Batteries For Tough Applications
MR137-120  +B31 Box Deep Cycle, High performance AGM Battery
MR137-120 +B31 Box Deep Cycle, High performance AGM Battery

MR137-120 +B31 Box Deep Cycle, High performance AGM Battery

Your Price:$309.99
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Part Number:MR137-B31
Quantity Pricing
  • 2 - 5
  • $288.29
  • 6+
  • $278.99
MR137-120 Battery Plus VBB31 Battery Box
 Nominal Voltage20Hr CapacityRC (min)
 MCA Terminal Posts DimensionsWeight
Charging Current*
Charging Voltage
Float Voltage
230 1740A 
8mm (included)
12.9"w x 6.8"d x 8.5"h(8.7"th**) 
Recommended Charging Options:
  • AC Chargers: Any Quality Brand AGM- Smart & Microprocessor controlled- charger with the recommended specs above can be used. Battery Charger Guide.
  • Vehicle Alternator: 14V-15V.
  • RV Converter: 14V-15V.
  • Solar Panel: 175W-450W.
  • Wind Turbine: 175W-450W.
  • Charge Controller: 20A-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.
*** 3sec Pulse Hot Cranking Amps.

Operating Temperature Range:

  • Discharge: -4~140F
  • Charge:     14~140F
  • Storage:     -4~140F

Temperature Compensation:

  • Cycle use:     -30mV/C
  • Standby use: -20mV/C

UPC: 804879255352

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.

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