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BENEFITS OF THE BLUETOP®:
OPTIMA® BLUETOP® D27M 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 D27M. If you are replacing an OPTIMA® battery you already have, this model is the same as batteries marked 8027-127, 9027-127, BLUES27M, SC27DM, or N99D27MBLUE.
*Pricing is based on exchange unit
| Battery Model: | D27M |
| Part Number: | 8027-127 |
| NSN: | Number applied for, product currently available |
| UPC Code: | 8 11405 00166 6 |
Performance Data |
|
| Cold Cranking Amps: | 800 |
| Cranking Amps: | 1000 |
| 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“ Blue |
| Group Size: | BCI: 27 |
| Post Type: | Dual SAE & 5/16 Stainless Stud |
| Weight: | 53.8 lb |
| Length: | 12.19 |
| Width: | 6.81 |
| Height: | 8.75 |
Power |
|
| CCA (BCI 0°F): | 800 amps |
| MCA (BCI 32°F): | 1000 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.) |
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. |

