Re: marine battery
I guess it depends on what you read and where you are reading it. Do you want the best battery or the best battery for the average price?
Optima AGM batteries have gotten the highest ratings regarding discharge rate and shock absorption according to Consumer Reports, but you are going to pay for it. They average in the $175-250 range, mayber even more at some places.
Lifeline and Sears batteries rate highest next in both service and price with both being in the $100-150 range.
After that, you're probably looking at Wal-Mart, Pep Boys, Auto Zone, etc. Plan on $75-100.
There are some other things to look at first.
1) Do you want a starting battery, a deep cycle, or a combination?
2) Are you runnning radio, lights, depth finders, GPS, amplifiers, etc?
3) Do you have an open battery box or are you limiting the battery size to a specific spot?
4) Will you be topping them/it off with a Battery Tender or relying on the engine?
In most cases, a locally purchased marine battery will work just fine as long as it's cared for. Get the largest (CCA) size you can fit with the best warranty you can find (usually up to 3 years) and make sure if secured appropriately. Check the fluid often (if it's open wet cell) and keep it topped off with distilled water when needed. Try not to drain it past the 50% mark too often as that is what kills them. If you find that you drain it often, you need dual batteries and whatever way you want to isolate them.
