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OPTIMA D31M

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Model No OPTIMA D31M
Description Optima D31M Blue Top Deep-cycle/Starting Marine Battery
Weight(kg) 27.3
Product Rating Batteries Direct 5 Stars Rating - The best quality product of its type with a proven reliability and excellent warranty support
Brand Optima
Comments
Optima Blue Top Marine Battery
 
Model Voltage

CCA (Amps)

Ah (@ C20)
RC (in mins)
Weight (kg)
Terminals
Dimensions** (L x W x H)(mm)
34M
12
800
50
110
17.5
+ Dual -
254x171x199
D34M
12
750
55
120
19.6 + Dual -
254x171x199 
D27M
12
800  66 140  24.4 + Dual -
309x173x222   
D31M
12
900  75
155  27.3
+ Dual -
329x171x238   
 *Specifications may change without notice **Dimensions are overall maximum and include all handles
 
Optima Blue Top Marine Battery

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.

Warranty: 2 years private use, all OPTIMA® have their warranty details on the top label and are honoured by the warranty stated on that label. 

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: 27.3 KG
Length: 329 mm
Width: 171 mm
Height: 238 mm

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.

Authorised Optima Batteries Distributor
Warranty Info OPTIMA D31M1410227497_1.pdf 
 



8052-161 9052-161 27931 D31M-1125 BLUED31M 27551 SC31DM N99D31MBLUE Optima D31M Blue Top Marine Battery

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