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Everything You Need to Know

About Deep Cycle Marine Batteries

Deep cycle batteries are an important component for many applications that require continuous and steady power over extended periods of time. Unlike regular car batteries, deep cycle batteries are designed to provide a deep discharge of 80%~90% DOD, allowing for the use of most of their capacity.

There are various types of deep cycle batteries available, including lithium batteries and lead-acid batteries. Each type has its advantages, but lithium batteries stand out for their lighter weight, more usable energy, efficient recharging, longer lifespan, durability, safer installation, and environmental friendliness.

Leo I
Leo I
I have two 100Ah batteries on my boat, great product, quality and amazing warranty. Highly recommend Tournament Lithium
L Kelly
L Kelly
Had an issue with my tournament lithium. Bought it from a dealer. I fish tournaments on the weekends and have one this weekend. Michael was great got bk to me immediately and after a discussion on what the battery was doing agreed it was faulty and swapped it out with a new one. Good customer support. Uptime is key
Adam Lucas
Adam Lucas
So...after fishing on a couple boats with GPS anchors...I had to have one...gotta have know the deal. Called great customer service...bought a 36v unit. They have only tested with a certain battery...this battery was VERY expensive. The hunt was on. I found Tournament Lithium's website...found a 36v 100ah battery and was immediately intrigued. I called the number...left a a call back from Mike, the owner. We talked for at least a half an hour (about more than batteries) and decided on the 36v 100ah battery package (battery, charger, mounting bracket, and hold-down strap)....for only $2000us (no loonies or toonies down here). It arrived, well-packaged, in a couple of days. Now here is why you need to buy from TL...I had to extend the the charger leads to accommodate the battery location vs the charger location). Called Mike. left a message...he called me back...again! We spoke for at least another half an hour discussing amperage drawn and wire gauge. Mike said he would have to confirm with the factory and will get back to me. Within 2 days we had our answer. YOU WILL NEVER GET CUSTOMER SERVICE LIKE THIS FROM THE OTHER BATTERY MANUFACTURERS...Mike is the man for customer service!
Rob Matthews
Rob Matthews
Running 12v 100ah x2 Tournament Lithium batteries for my 80lbTerrova. Incredible run time, quick charging and a huge weight savings from lead acid!! Increase your time on the water and less time charging.
Frank Di
Frank Di
I have been running 120 AH tournament lithium batteries for 1 year now with out any issues. Plenty of power and the reduced weight in the back means quicker hole shots and better gas mileage. Also it’s a local company and any warranty issues will be quickly dealt with. Buy with confidence!
Shalena Thompson
Shalena Thompson
Needed a battery for my kayak trolling motor and came across Tournament Lithium and their 100ah Kayak specific battery. Very pleased with its performance and appreciated it's light weight. I have peace of mind knowing I won't run out of power on the water. Would recommend to anyone looking for a reliable power source.
Andrew Klassen
Andrew Klassen
I'm absolutely blown away by the performance of these batteries. As a guide, I've used a lot of different makes and models over the years. I now have 3 of the 12V 120AH Extreme models, and 2 12V 100AH Flagship models. I've never used a more powerful battery. Super light, amazing performance in the boat, charges fast, and an unbeatable warranty. I can't say enough good things about them!

Types of Deep Cycle Marine Batteries

When it comes to the types of deep cycle batteries, they can be divided into four categories:

Flooded Lead Acid Deep Cycle Battery – the oldest type of car battery still in use, requiring charging when the DOD drops to 50%~70% and being stored upright in a ventilated environment to avoid leakage.

Absorbent Glass Mat (AGM) Deep Cycle Battery – a type of Valve Regulated Lead Acid (VRLA) battery that requires a unique charger due to its sensitivity to overcharging.

Gel Cell Deep Cycle Battery – another type of VRLA battery, also requiring a special charger and regulator.

Lithium Deep Cycle Battery – a newer option compared to lead-acid batteries, offering advantages such as being lighter, having a higher usable capacity, faster recharge rate, longer cycle life, and providing constant voltage over any rate of discharge. The most recent type of lithium battery is Lithium Iron Phosphate (LiFePO4), commonly used in deep cycle applications.

Deep cycle batteries are commonly used in various applications that require continuous power for longer periods, such as electric golf carts, floor cleaning machines, scissor lifts, wheelchairs, scooters, forklifts, recreational vehicles, boats, and renewable energy systems.

The lifespan of deep cycle batteries can vary depending on the type and maintenance. On average, lithium batteries last 4-10 years.

To ensure the longevity and proper functioning of deep cycle batteries, it is important to follow maintenance tips such as using a matching charger, avoiding inverted battery packs, storing in a dry and ventilated environment, avoiding exposure to outdoor elements, and not touching the positive and negative electrodes simultaneously.

Deep cycle batteries offer reliable and long-lasting power for a wide range of applications. Choose the right type of deep cycle battery for your needs and enjoy uninterrupted power when you need it most.

Salt Water Fishing Lithium Batteries

Tournament Lithium

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