BT DCM 5.5 Optima Blue Top Marine Battery – (8052-188) BTDCM5.5 AGM

£269.99 Inc VAT

Guaranteed next working day delivery on orders before 1pm


If you`re looking for pure power, then look no further. The OPTIMA® BLUETOP® battery delivers the power you can rely on. Its patented SPIRALCELL TECHNOLOGY® means more running time, faster recharge, and up to twice the life of traditional marine batteries. And it’s specifically built to handle the demanding challenges of marine applications.

The OPTIMA® BLUETOP BT DCM 5.5 battery is completely spill-proof and maintenance-free. It’s lightweight and can be mounted virtually anywhere and in any position. It’s over 15 times more resistant to vibration than other batteries, which matters in the hull of a boat. And it retains its charge longer and recharges faster thanks to its remarkably low self-discharge rate. And that can mean a quicker return to the water after the off-season.

BLUETOP® Deep Cycle

OPTIMA’s BT DCM 4.2, BT DCM 5.0 and BT DCM 5.5 BLUETOP batteries are dual-purpose batteries. They can be used in any deep-cycle (marine accessory, house applications, trolling motor, bow thrusters) or starting applications.


  • Both dual-purpose and starting applications available
  • Lasts up to 3 times longer than other marine batteries
  • More than 15 times the vibration resistance
  • Completely spill-proof
  • Mountable in virtually any position
  • Maintenance-free
  • Optimal starting power (dual purpose and starting applications available)
  • Works well as a boat battery or RV battery

Additional information

Weight 26.5 kg



12 Volt

Ah Capacity

75 Ah




325 mm


165 mm

Height (inc. Terminals)

238 mm


1 Year



Data Sheet

Optima BT DCM5.5 DatasheetOptima BT DCM5.5 Datasheet


The Go Batteries Promise

  • Next working day delivery on UK orders *
  • Minimum 12 month guarantee
  • Free telephone support
  • * Guaranteed next working day delivery on orders placed before 1pm. For International and non-standard UK deliveries, please email: or call +44 (0)1926 400080 for delivery options and advice. We`ll always do our best to get orders to you as fast as possible.

NOTE: Delivery costs are calculated based on post code and shown at the checkout stage From £7.99 – Nationwide Delivery (Terms) * For Highlands and Islands and non-standard UK delivery, please call us on +44 (0)1926 400080 for delivery options and advice. We’ll always do our best to get orders to you as fast as possible

Free disposable gloves with all orders


The BLUETOP Advantage

OPTIMA Batteries - Frequently Asked Questions

OPTIMA – Frequently Asked Questions