We offer Deep Cycle Lithium Batteries that can be combined in series for 12V, 24V, or 36V Trolling motors. Our Lithium Batteries will work with all trolling motor brands and are a drop in replacement from your AGM Batteries.


12V 50AH Lithium trolling motor Battery

The SB50 - 12V 50AH Lithium Battery is ideal for anglers wanting a light weight - cost efficient Lithium Battery for their trolling motor.

Type of Use : Mid Level - Average 4 - 8 hours of fishing.

Price: $599.99 ea.

12V 50AH Lithium Ion Battery

12V 75AH Lithium trolling motor Battery    | Group 24

The Group 24 - 12V 75AH Lithium Battery is ideal for most trolling motors and is widely used by anglers who want enough power to last throughout an entire day of fishing. 

Type of Use : Mid - High Level - Average 6 - 10 hours of fishing.

Price: $949.99 ea.

12V 75AH Lithium Ion Battery

12V 80AH Lithium trolling motor Battery   | Group 27

The Group 27 - 12V 80AH Lithium Battery is commonly used for Anglers wanting to have enough power to last all day and still have power left over.

Type of Use : High Level - Average 8 - 14 hours of fishing.

Price: $999.99 ea.

12V 80AH Lithium Ion Battery

12V 100AH Lithium trolling motor Battery   | Group 31

The Group 31 12V 100AH Lithium Battery is the Ultimate Lithium Battery for any trolling motor. Used widely by Professional Sports fishing and Bass Anglers, the SB100 provides enough power to keep your trolling motor running at maximum performance through out the entire day. 

Type of Use : High - Professional - Average 12 - 24 hours of fishing.

Price: $1249.99 ea.

12V 100AH Lithium Ion Battery

2014 Ranger Z520

Lithium Trolling Motor Battery

2015 Ranger Z520C

2015 Skeeter FX21

Our Trolling Motor Lithium Battery review from one of our customers-

Lighten up, go lithium!

I first heard of lithium ion marine batteries from watching a YouTube video of Bassmaster Elite Series Pro, Aaron Martens.  Aaron seemed genuinely impressed by the batteries and explained many of the benefits.  After doing some research, I decided that these batteries were out of my price range ($1,000+ per battery).  That was over a year ago and with gas prices pushing $4 a gallon; I was desperately searching for a way to increase my fuel efficiency.  Lithium batteries are much lighter than AGM batteries, typically last 3-4 times longer, and fully recharge in as little as 2 hours.  I’m a sucker for trying out new cutting edge technologies so this was more than enough for me to justify the higher prices and make the switch to lithium. 

I decided to purchase my batteries from Smart Battery, LLC (  They offer the best prices in combination with the best warranty on the market.  Their customer service is also top notch.  I sent an e-mail message and received a reply within minutes.  Shortly after, my lithium ion batteries were on their way!
My previous 36 volt system consisted of 3 Sears Platinum Marine DieHard batteries.  My cranking battery was not replaced.  Each one weighs 75 pounds for a total of 225 pounds.  Add 30 pounds from the Dual Pro on-board charger and the total weight increases to a whopping 255 pounds.   The lithium ion battery weighs just 28 pounds for a total of 84 pounds for a 36 volt system.  I chose not to mount the charger on-board even though it is much lighter than the Dual Pro.  The final weight difference equals 171 pounds!  So was switching to lithium worth it?  Let’s take it to the lake and find out!

Does it float your boat?

Since my boat was now 171 pounds lighter I decided to see if it made a difference in how the boat sits in the water.  There are claims that bass boats will sit up approximately two inches higher in the water column as a result of the weight reduction.  I decided to test this claim.  I weigh approximately 180 pounds or about as much as the weight saved by switching from AGM batteries to lithium ion batteries.  For this experiment, I sat in the back of the boat where my new lithium ion batteries are located and got my dad to measure the water line on the side of the boat.  I then stepped out of the boat and measured the water line again.  The results were that my boat with the lithium ion batteries sat approximately 1.5 inches higher in the water column.  Of course this is a very simple test, but it does prove that the weight difference will increase how high your boat will sit up in the water column. 

Faster top end speed?

Top end speed is crucial for beating the competition to the best fishing areas.  If you are a tournament angler you know that the best spots are often the most crowded spots.  Speed means everything to get to these locations before the crowd arrives.  My boat loaded down with two people, AGM batteries, 3/4 tank of gas, full live wells, and a moderate tournament load would peg out at about 69-71 MPH depending upon the conditions.   So how did my boat perform with a similar load but with my new lithium ion batteries?  Extremely fast hole shot with a top end speed of 74 MPH!  The boat consistently ran between 72-73 MPH.  You can expect at least a 2-3 MPH increase in top end speed.  

Better fuel efficiency?

The gas prices these days are ridiculous!  Gas prices are almost $4 a gallon in many parts of the country.  On average, I use about 25 gallons of gas per tournament.  This equals about $100 of gas per tournament.  The best way to improve fuel efficiency is by taking it easy on the throttle, but when you are in a tournament, it’s hard not to run your boat at wide open throttle.  I wanted to see if I gained any fuel efficiency at wide open throttle after switching to lithium.  I have a mercury smart craft gauge on my boat that instantly tells me my fuel efficiency in MPG (Miles per Gallon).    My boat loaded down with two people, AGM batteries, 3/4 tank of gas, full live wells, and a moderate tournament load would get about 2.8 MPG at wide open throttle.  A similar load with the lithium batteries showed a slight increase to about 3.1 MPG.  This equals about .3 MPG at wide open throttle.  I burned 845 gallons of gas last year.  My range with my AGM battery set up equaled 2366 miles at full throttle (2.8 MPG x 845 gallons).  The lithium ion battery set up increased my range to 2619.5 miles (3.1 MPG x 845 gallons) or 253.5 miles more than my previous set up.  This difference is equal to about 82 gallons or $327 of fuel if you average 3.1 MPG over the 253.5 miles.  The batteries are marketed to last 10+ years.  If they last this long, the batteries will pay for themselves in fuel savings.

Final thoughts

Switching to lithium has really been an exciting experience.  It’s not often that something as cutting edge as this comes along in the bass fishing industry.  The results of my testing suggest that there are benefits to switching to lithium.  The batteries have performed flawlessly in my testing.   They are the strongest batteries I have ever owned and they don’t weaken throughout the course of the day.  I cover a lot of water and at the end of the day they still only take 2-3 hours to recharge.  The performance of my boat has far surpassed my expectations.  It rides and handles like a completely different boat.  If you are conscious about your driving habits, you can expect a substantial increase in fuel efficiency.   A much quicker hole shot and faster top end speed can also be expected.  The only drawback of switching to lithium ion batteries would be the price tag.  If you are a tournament angler, the advantages of lithium ion batteries far outweigh the cost.  For more information on lithium ion batteries please check out the Chargex website at
***Test boat was a DC Nitro Z8 with a Mercury 250 Pro XS***

Lithium Batteries for your trolling motor

Hundreds of Anglers have purchased our Lithium Batteries for trolling motors to increase performance and decrease the weight of batteries in their boats. Our proven reliability and safety has made us one of the leading Lithium battery supplier worldwide for Lithium batteries used in trolling motor applications. 

On average a typical bass boat will require 3 - 12V batteries for a 36V trolling motor. A typical AGM group 31 lead battery weighs around 75 lbs. Times that by 3 and you have 225 lbs. of lead in the back of your boat. Add another group 31 for your engine and that is 300 lbs of lead acid batteries. The Chargex group 31 - 12V 100AH Lithium Ion Battery only weighs 28 lbs. and is the ultimate Lithium trolling motor battery that will outlast and outperform any other group 31 battery on the market. At just 28 lbs. by switching the trolling motor batteries from lead to lithium your removing 141 lbs. out of the boat. If your going to replace your engine battery with a lithium, you can remove over 200 lbs out of the boat. 

Most Professional Bass Anglers run 4 - Chargex Group 31 - 12V 100AH Lithium Batteries. This saves around 200 lbs of weight and helps them gain a 3 mph increase in top end speed, a faster hole shot and require less draft.