Capacity
50AH |
Voltage
38.4V |
Weight
33 lbs |
Size
13” x 6.75” x 9” |
Warranty
10 years |
BMS: Yes
Chemistry: LFP
Efficiency: 98%
Memory: None
Max Charge/Voltage: 43.2V
Peak Discharge: 150A
Cut-off Voltage: 33V
Max Charge/Discharge Current: 50A
Operating Temp: -4°F – 140°F
Low Temp Charging Protection: Yes
Cell Type: Prismatic
Bluetooth: Yes
From an engineers point of view, using a 36V battery vs 3x 12V batteries is absolutely a no brainer. 36V batteries have electronics built in specifically designed for 36V applications, creating a true, no drama set up that will power your adventures for many years. 3x 12V can become misbalanced causing them to not work together in sync, causing you headaches that you shouldn’t have to deal with. Lithium batteries should simplify and eliminate battery stress, not cause you more! We take that assignment personally and are determined to make it a reality.
THE MILLERTECH® SPORT SERIES LITHIUM BATTERY
10 YEAR GUARANTEED WARRANTY IS SIMPLE!
TERMS:
From the date of your battery purchase through year number 10 of ownership, your battery is covered. If it stops working during this time, we will repair or replace it with a battery of equal or greater value for FREE!
SHIPPING:
We cover all shipping costs associated with shuttling your battery back and forth for repair or replacement. It is our warranty; it is our cost; not yours.
EXCLUSIONS:
There are NONE! You trusted Millertech®, and if it’s within the warranty period your Millertech® battery is completely covered for everything!
PROOF OF PURCHASE:
You don’t need one. If it’s Millertech®, it’s covered!
FOR WARRANTY SERVICE CALL:Â 855-MAX-LITH
Customer Reviews
Cliff Rhodes
Rating: 5/5
Great for all day fishing!
I spoke with Roman at Miller tech and gave him all of the info he needed in order to suggest the right combination for my usage. He advised going with the 2 36volt 50amp hour batteries. At a full charge, I was able to fish all day Saturday and from 7am to 1 pm on Sunday before they died. So I got roughly 14 hours of use on one charge. Very impressed and will only use these batteries going forward.
Mon Oct 13 2025 14:33:41 GMT+0000 (Coordinated Universal Time)
Ronald Lee
Rating: 5/5
outstanding battery
Outstanding battery and sales support. Battery delivered immediately and was exatly as ordered and no issues. Have used Millertech batteries before and technical support staff are responsive and can immediately resolve any issues on line. Great company that stands behind their product and customer support.
Mon Jun 30 2025 13:49:16 GMT+0000 (Coordinated Universal Time)
Mike Sanders
Rating: 5/5
Awesome Baterries
Love my 2 new lithium 36 volt 50 amp trolling motor batteries. Fishing all day 12 hours and batteries r still showing above 90 percent at the end of the day. đź‘Ť
Sat May 10 2025 05:39:08 GMT+0000 (Coordinated Universal Time)
Tob Fowler
Rating: 5/5
Received my battery and charger today still have to install Going on a week bass trip to California Delta may 12th it’ll get a good test. To be honest I’m a disappointed that it’s made in China when a family man designed it here in the USA.
Sat Apr 26 2025 02:57:42 GMT+0000 (Coordinated Universal Time)
Charles Nyce
Rating: 5/5
36V 50AH Sport Series Lithium Battery w/ Bluetooth (3650-BT)
Mon Mar 31 2025 10:35:46 GMT+0000 (Coordinated Universal Time)
KEVIN PADUK
Rating: 5/5
Best customer service
Bought 2 36v 50amp batteries plus 36volt charger,arrived within 24hrs ,1 battery didn't come with handle made a call came to my home the next Day+ shirt and hat. every question I had they answered. There Customer service is A+ I would refer them to anybody looking to power anything with a Battery.
Mon Mar 17 2025 15:03:54 GMT+0000 (Coordinated Universal Time)
Mark Dorsey
Rating: 5/5
Good Choice
I've been researching replacing three 12 volt lead acid batteries with one 36 volt Lithium for several months. There are a LOT of options out there! I really liked the options available from Millertech and all the reviews were positive. I have not been able to run the new battery as of yet so I cannot talk of how it does with my trolling motor. That being said the ordering was super easy, the staff was very
helpful answering all my questions and after my new battery and charger arrived I followed the instructions on setting it up and initial charging and it was really easy. I have to say customer service was far above what I was expecting and way above most companies selling online these days. I am extremely happy that I chose to go with Millertech!
Sat Jan 04 2025 04:37:19 GMT+0000 (Coordinated Universal Time)
don Stavinoha
Rating: 5/5
To busy to go use the boat
I have not used the boat busy with grand kids foot ball & basketball. Check back with me in about 30 days
Sat Nov 02 2024 12:58:35 GMT+0000 (Coordinated Universal Time)
Paul Kothe
Rating: 5/5
New to Lithium Batteries
This is my first set of lithium batteries. I only had a chance to use them for testing. They are powering my new PowerPole Move trolling motor and on my 24 foot bay boat it is a great upgrade form the 24 volt lead acid setup I had before. With twin 36 volt I should have a great deal more run time as well. Looking forward to seeing how far they will go in a day. The bluetooth app works great and gives you plenty of information on your batteries.
Wed Aug 21 2024 13:26:22 GMT+0000 (Coordinated Universal Time)
Stacy Kennemur
Rating: 5/5
36V
This is my 2nd 36V and will be parallel both batteries together. I love these batteries and are lighter than one 12V battery.
Sun Jul 14 2024 00:28:59 GMT+0000 (Coordinated Universal Time)
