OPTIMA Batteries 8052-161 - D31M Group 31 BLUETOP Dual Purpose (Deep-Cycle & Starting)

$374.96

BENEFITS OF THE BLUETOP®:

  • Both dual-purpose and starting applications available
  • Up to three times more recharges
  • More than 15 times the vibration resistance
  • Completely spillproof, mountable in virtually any position
  • Maintenance-free
  • Optimal starting power (Dual purpose and starting applications available

OPTIMA® BLUETOP® D31M group 31 batteries are our most powerful and have the largest energy storage capacity. Usually they can be mounted anywhere a (slightly shorter) group 27 would be used. Ultra high-performance SPIRALCELL TECHNOLOGY® AGM (absorbent glass mat) dual-purpose battery for marine and RV. BLUETOP® has three times the cycling capability (rechargeability) with ultimate cranking power for your boat or RV in a maintenance-free package. Perfect for multiple high-demand accessories and trolling motors with 15 times the vibration resistance and lighter weight. Lower internal resistance provides more efficient power output and faster recharges.
The OPTIMA® model number for this battery is D31M. If you are replacing an OPTIMA® battery you already have, this model is the same as batteries marked 8052-161, 9052-161, 27931, D31M-1125, BLUED31M, 27551, SC31DM, or N99D31MBLUE

 *Pricing is based on exchange unit

Battery Model: D31M
Part Number: 8052-161
NSN: 6140 01 502 4405
UPC Code: 8 11405 00161 1

Performance Data

Cold Cranking Amps: 900
Cranking Amps: 1125
Nominal Voltage: 12 volts
Open Circuit Voltage (fully charged): 13.1 volts
Internal Resistance (fully charged): 0.0025 ohms
Capacity: 75 Ah (C/20)
Reserve Capacity: BCI: 155 minutes (25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off)

Physical Characteristics

Plate Design:

High purity lead-tin alloy.  Wound cell configuration utilizing proprietary SPIRALCELL TECHNOLOGY®.

Electrolyte:

Sulfuric acid, H2SO4

Case: Polypropylene
Case Color: Light Gray
Cover Color: “OPTIMA“ Blue
Group Size: BCI: 31
Post Type: Dual SAE & 5/16 Stainless Stud
Weight: 59.8 lb
Length: 12.19
Width: 6.56
Height: 9.38

Power

CCA (BCI 0°F): 900 amps
MCA (BCI 32°F): 1125 amps

Recommended Charging

The following charging methods are recommended to ensure a long battery life: (Always use a voltage regulated charger with voltage limits set as described below.)
Model: D31M These batteries are designed for starting and deep cycle applications and for use in vehicles with large accessory loads.


Recommended Charging Information

Alternator: 13.65 to 15.0 volts
Battery Charger: 13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate
Float Charge: 13.2 to 13.8 volts; 1 amp maximum; (indefinite time at lower voltages)
Rapid Recharge (Constant voltage charger): Maximum voltage 15.6 volts. No current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below 1 amp.
Cyclic or Series String Applications::

14.7 volts.  No current limit as long as battery temperature remains below 125°F (51.7°C).  When current falls below 1 amp, finish with 3 amp constant current for 1 hour. All limits must be strictly adhered to.

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