OPTIMA BlueTop 765 55Ah 12V lead battery has BTDC 4.2

The BLUETOP® has a duration of life and many more ups than a conventional battery. It is ideal for motorboats, complex electronic systems or recreational vehicles.
On the water, the engine resulting in you must be able to bring back you... Battery OPTIMA® BLUETOP precisely provides the energy that you can trust. Its patented SPIRALCELL® Technology is synonymous with a longer running time, of a faster reloading and a life expectancy up to two times higher than that of the water batteries conventional. In addition, it is designed specifically to meet the challenges posed by water applications.

The OPTIMA BLUETOP battery does not leak and requires no maintenance. Light, it can be mounted almost anywhere, in all positions. Its vibration resistance is 15 times higher than that of other batteries - this is not a thin advantage in a ship's hull! Finally, it hold a charge longer and recharges faster, thanks to its extremely low self-discharge rate. In other words, it allows a return on the faster water after the off-season.

The BLUETOP BT DC 4.2 and BT DC 5.5 Optima are batteries to dual application. They can be used for all applications to deep discharge (nautical accessories, motor boats, bow thrusters, domestic applications) or to start.