Optima Blue Top BTDC4.2 battery - 12V 55Ah 765A

The Optima BlueTop BT DC 4.2 is no ordinary battery. Thanks to its patented SpiralCell technology, it combines two worlds: lightning-fast starting power and deep discharge capability (Dual Purpose). Whether you need to start a demanding engine or power your electronic accessories for hours, this battery delivers.

Why choose the Optima BlueTop BT DC 4.2?

SpiralCell Technology: Unlike flat plates, Optima's cells are spiral-wound, providing a much larger reaction surface. The result: 765A of starting power in a compact casing of only 25cm.

Vibration Resistance (x15): This is the most robust battery on the market. It resists vibrations 15 times better than traditional batteries, which is crucial for rough seas or high-speed boats.

Convenient Dual Terminals: It is equipped with dual terminals (standard push-in posts + stainless steel threads). You can connect your engine cables to the main terminals and your accessories (fishfinder, pumps, VHF radio) directly to the threads for a clean and secure installation.

Multidirectional Mounting: Completely waterproof and airtight, it can be installed in any position, even lying on its side, without any risk of leakage.

Uncompromising Durability

The Optima BlueTop has a significantly longer lifespan and much faster charging than conventional batteries. Its low self-discharge makes it the ideal battery for boats that remain in port or on a trailer during the winter.

Recommended Uses

The Optima BT DC 4.2 is the perfect solution for:

• Combined starting and servicing: Ideal for fishing boats (bass boats), RIBs, and waterski boats.
• Outboard and Inboard Engines: Capable of starting even the most stubborn engines while managing onboard electronics.
• The bow thruster: Its high intensity makes it an excellent battery dedicated to maneuvers.