Marine battery OPTIMA BTDC-4.2 12V 55Ah 765A
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The OPTIMA battery BTDC-4.2 of 55 Ah and 765 A is an AGM spiral cell BLUE TOP, with pure lead and maximum vibration resistance. Installation available in Málaga.
- Sealed and waterproofDoes not spill or leak; maintenance free.
- Starting and ServicesStarts the engine and powers the onboard systems.
- SpiralCell spiral cellPure lead that withstands vibration and shaking.
The brand
OPTIMA, SpiralCell technology from the Clarios group
OPTIMA is Clarios' high-performance range based on SpiralCell technology: sealed pure lead cylindrical cells in AGM. It is completely leak-proof and maintenance-free, and its construction makes it practically immune to vibration and deep discharge.
It is identified by the color of the top — red, yellow or blue — which indicates its use: starting, dual purpose or marine. All share the same spiral cell; the internal configuration changes according to the application.
The range
OPTIMA BLUE TOP
Apply the pure lead SpiralCell technology to the marine environment: sealed and waterproof, resists waves, vibration, and deep discharges from onboard consumption. It does not leak even when the boat tilts and requires no maintenance.
The OPTIMA BLUE TOP is the spiral cell marine battery: starts the boat engine and powers the onboard services. It is recognized by its blue cover and usually has double terminals.
The product
The OPTIMA battery BTDC-4.2 offers a capacity of 55 Ah and a cold cranking current of 765 A, with the AGM spiral cell technology.Measure 254×175×200 mm.Position the positive terminal on the left.

Buy and installation in Málaga
Pickup in store in Málaga. You can buy it on the website and pick it up the same day at our facilities, or order installation if you prefer us to install it and check the alternator.
Which way is the positive terminal facing?
The positive terminal is on the left, looking at the battery front on with the terminals towards you.
What is OPTIMA's SpiralCell technology?
They are pure lead cells wound in a spiral instead of flat plates. They increase the active surface area and vibration resistance, and allow the battery to be mounted in almost any position.