Consider Optima Boat Batteries

Optima boat batteries are a real option. Whether you own a fishing boat, a sailing-yacht or a house boat or are upgrading a used boat, trailerboat or a powerboat the subject of the marine battery is going to confront you.

The leading battery brands all offer good quality products, whether it be Rolls, Surrette, Optima battery, Deka or Exide and many others.

It’s usually a choice between deep cycle boat battery, gel boat battery, AGM boat battery or a traditional flooded cell marine battery. Now the Lithium boat battery is starting to get popular. The demands that are now placed on the average boat electrical system have generally outgrown that of older traditional wet cell battery technology with the equally rapid advances in electrical and electronics systems.

Optima Boat Batteries

Optima boat batteries are among the most advanced AGM battery in today's market. The Optima is constructed by using spirally wound cells. This gives an Optima AGM battery many advantages over conventional flat plate batteries and other flat plate AGM batteries. This construction of spirally wound cells has real advantages for deep cycle batteries. These spiral cells allow the use of lead in its purest form at 99.99% for the internal battery grids. This contributes to a lower internal resistance allowing Optima Deep cycle batteries to handle high discharge and recharge rates. This means increased cranking amps and much faster recharge rates. No I don't get paid for endorsing, this is just a great product and have yet to find anyone who is unhappy with them. 

Optima Boat batteries are probably the best AGM batteries on the market, for boats they tick every box. Image Courtesy Optima Batteries

Optima Boat Batteries

Within an Optima boat battery, the lead plates and separator are wound and then tightly compressed into a cell tube. These tightly-coiled Absorbent Glass Mat (AGM) separators that are set between each cylindrical cell hold the electrolyte fluid similar to a sponge which eliminates acid spillages. This prevents any movement, plate shedding and breakage or fractures even when subjected to severe shock and vibration. I have read test results that show an optima battery being subjected to 5G vibrations for 12 hours and it still stayed operational. One of the factors within this battery type is that there is no free flowing acid that can leak or spill from the cells, so operation at any angle of heel or even inverted has no affect on performance. Because the cell is sealed there is none of that electrolyte acid spray on the battery top and so no impacts on the battery connection posts or cable connections and also to trap dust and salt causing eventual tracking and discharge across the top if not maintained.

Optima Boat Batteries

Battery charging offers significant advantages over the slow charging in flooded cell batteries. When charging an Optima Boat battery using a 100 amp alternator, charging into a 100% discharged battery (my worst nightmare), which is nominally at 10.5 volts, complete recharging will take approximately 35 minutes. They quote this test for an Optima D27F Deep cycle battery.  Optima Deep cycle batteries also accurately rated in amp hours (C20 rate). A fact is that many deep cycle batteries are often rated at 100 amp hours, but in reality it is possible only to discharge 70% of this value. With Optima Deep cycle batteries you can discharge 100%, although I don’t recommend you do that.  Check out Optima for yourself at Optima Battery website,

Optima Boat Batteries

Other advantages are the very high battery shelf life of around 12 - 18 months. I know like many the frustration of high self discharge rates and the dead battery when left without a charger.  Flooded cell batteries typically are discharged within only in 3 -6 months and the life reducing plate sulfation that it causes. I know many cruisers who use an AGM deep cycle on the engine doubling as an extra get out of jail power source. It makes good sense really. So look at Optima Boat batteries when selecting your next boat battery