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Optima Blue Top Marine Battery - 8027-227 12V 66Ah - BTDCM5.0, 2 Years Warranty
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CCL 15-009 Brass Positive Battery Terminal M8 Stud
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Technical Specification
PRODUCT NUMBER EP600LSLC75-12
Voltage 1212
Capacity (AH) 7075
Cold Cranking Amps (EN1) 760
Terminal Type F8
Length 278260
Width 175168
Height 190215
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Q 1. What is the voltage and capacity of the Optima Blue Top BTDCM5.0?

A. The BTDCM5.0 (8027-227) is a 12-volt battery with a rated capacity of 66 Ah at the C20 rate.

Q 2. What is the cold cranking amp (CCA) rating of the BTDCM5.0?

A. The Optima Blue Top 8027-227 is rated at 845 CCA, measured to the EN standard, providing sufficient starting power for mid-sized marine engines.

Q 3. What terminal type does the BTDCM5.0 use and what is its polarity configuration?

A. The battery uses dual SAE post and stud terminals (type DT) with a polarity configuration of 2. This allows connection via standard SAE leads or bolt-down ring terminals.

Q 4. Is the Optima Blue Top BTDCM5.0 a starting battery, a deep-cycle battery, or both?

A. The Blue Top range is dual-purpose, combining engine-starting capability with deep-cycle performance to support auxiliary loads such as trolling motors, navigation systems, and onboard electronics.

Q 5. Does the BTDCM5.0 support start-stop vehicle systems?

A. The AGM technology used in this battery is compatible with start-stop systems in principle. However, fitment should be verified against the vehicle or vessel manufacturer's specification and the product label before installation.

Q 6. Is the Optima Blue Top 8027-227 spill-proof and safe for use in enclosed or angled battery compartments?

A. Yes. The sealed AGM construction contains no free liquid electrolyte, making the battery spill-proof and suitable for installation in enclosed compartments or at angles where a conventional flooded battery would not be appropriate.

Q 7. Are there any direct cross-reference part numbers for the BTDCM5.0?

A. No direct cross-reference codes are listed for this SKU. Compatibility should be verified by comparing the physical dimensions, voltage, capacity, and terminal configuration against the original battery specification.

Q 8. What warranty does the Optima Blue Top BTDCM5.0 carry?

A. The battery is covered by a 2-year warranty against manufacturing defects under normal operating conditions. Proof of purchase must be retained to support any warranty claim.

Q 9. What are the delivery and returns terms for the BTDCM5.0?

A. Standard delivery is 1–3 working days within the UK mainland. A 30-day returns policy applies; goods must be returned in their original condition.

Q 10. What are the physical dimensions and weight of the BTDCM5.0?

A. The battery measures 309 mm (length) × 172 mm (width) × 221 mm (height including terminals) and weighs 24.4 kg.

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