You cannot run a boat on the water without a deep cycle marine battery as it provides power for all the electronic equipment, trolling motor and other onboard appliances. My trolling motor used to die went fishing, so I know how important it is to have the marine battery on the board.
There are several types marine batteries out there which can make your choice difficult. However, I would like to recommend AGM batteries. The best AGM battery for boat will retain the charge better, has longer lifespan and lower self-discharge rate than most others type of batteries. Due to this, AGM is the most common and versatile marine battery.
VMAXTANKS MR107 is deal deep cycle battery for trolling motors that have the thrust of about 30 to 55 pounds. If you use it for more powerful trolling motors, it may quickly run out the battery capacity. The first thing to talk about this battery is its sturdy and easy-to-carry design. Its case is made of ABS plastic. It also comes with a metal handle at top for convenient transport.
This 100% sealed battery is water-proof, which help protect the internal part and ensure it is long lasting. It has the unique structure that makes it keep its charge for such a long time. Even if you do not regularly use it, this battery still retains its full charge for up to 6 months. The lead-tin materials help promote its strength and service life.
VMAXTANKS is great to power for even heavy trolling rigs due to its high ampere output. Under proper maintenance and temperatures, this battery can last for up to 10 years. This is amazing lifespan for the money you have to pay to get it. Vmaxtanks also provides you 1 year warrantee for this battery.
Mighty Max Power Boat is what you need if you are looking for the battery for the small to medium trolling motor. Although it only provides 55Ah amp hour rating but this battery is very reliable and inexpensive. If you have the small boat, you will love this battery as it has a very small compact size that can be placed at anywhere in the boat. It measures 9” x 5.4” x 9.1” and weighs 38.58 pounds, the ideal size for even tenders, inflatables, fishing kayaks, or canoes.
Not only that, Mighty Max Power Box is also great battery for fishing and traveling, as it can last for a week without being recharged. This sealed AGM battery is spill-proof, do not need to be maintained. It has wide operating temperatures what make it ideal for infrequently. With about $110, you can get this reliable compact battery, Mighty Max manufacturer also offers 30 days refund policy and 1 year warranty for thif product.
Optima Batteries 8016-103 BlueTop is one of the mos powerful batteries on the market due to this, it can provide enough power for most the onboard appliances and for running colling motors as well. Most the case, you will need at least 2 batteries for trolling motors and starting the boat. However, with this Optima BlueTop you can used it as a starting battery and also a deep cycle battery, it provides dual-functionality. The Optima has the capacity of 15 times more vibrations resistant than other marine batteries out there. It also great to be used in cold weather.
The Optima provides 750 amps output, the reserve capacity is 120 minutes. It is also lightweight and compact enough to do not take lots of space in your boat. There is the problem with the Optima is that it is features glass mat technology in the construction, if you overcharge the battery, the glass mats may be damaged. Therefore, you have to make sure that you charge it.
The Optimal manufacturer also offers a 2-year warranty for this product, that means you can replace the battery if there are any quality control issues from the manufacturer.
Universal Power Group has the 100Ah capacity, it provides a reserve capacity of 120 minutes. If you use the battery infrequently, this one can retain its charge for up to 6 months. This battery is power enough to run all the appliances in your boat and trolling motor.
The product is also very versatile as it can be used as marine battery for boats and also can be used in RVs, campers and for home use. However, what I dislike about it is that it is relatively heavy. The sharp edges also make it a little bit hard to store.