OPTIMA D27F YELLOW TOP DEEP CYCLE BATTERY, 1025 CRANK AMPS

OPTIMA® Batteries 8037-127 D27F YELLOWTOP® Starting and Deep-Cycle Battery

Battery Model: D27F
Part Number: 8037-127
Performance Data
Cold Cranking Amps: 830
Cranking Amps: 1025
Nominal Voltage: 12 volts
Open Circuit Voltage (fully charged): 13.1 volts
Internal Resistance (fully charged): 0.0025 ohms
Capacity: 66 Ah (C/20)
Reserve Capacity: BCI: 140 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“ Yellow
Group Size: BCI: 27
Post Type: SAE Post
Weight: 53.2 lb
Length: 12.16 in
Width: 6.762 in
Height: 8.61 in
Power
CCA (BCI 0°F): 830 amps
MCA (BCI 32°F): 1025 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: D27F
These batteries are designed for starting and deep cycle applications and for use in vehicles with large accessory loads..

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OPTIMA® YELLOWTOP® D27F Ultra high-performance  SPIRALCELL TECHNOLOGY® AGM (absorbent glass mat) dual-purpose (deep-cycle and starting) battery. OPTIMA® YELLOWTOP® batteries have three times the cycling capability (rechargeability) with ultimate cranking power for your car or truck to outperform traditional batteries. Perfect for powering heavy electrical loads, including winches, audio systems, inverters, and other demanding vehicle accessories and electronics. Lower internal resistance provides more efficient power output and faster recharges.

BENEFITS OF THE YELLOWTOP®:
Deep-cycle and cranking power
Up to two times longer life
More than 15 times the vibration resistance
Completely spillproof, mountable in virtually any position
Maintenance-free
Faster recharging
Optimal starting power
300+ discharge/recharge cycles

**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 2 amp constant current for 1 hour.
All limits must be strictly adhered to.