Millertech Marine 4-Bank LiFePo4 Lithium Battery Charger

(4 Reviews)
$429.00

Free shipping

This MillerTech, 4-bank, marine Lithium battery charger was specifically designed for the avid fisherman who only settles for the very best! Our goal, when designing and developing this charger was to create a high-quality, feature-rich, marine battery charger that is reliable and simple to use, making your experience seamless and enjoyable! Our charger produces 40A continuous, meaning 10A is going into each of your 4 batteries at all times, (from start to finish) unlike conventional chargers that taper off halfway through the charge and take a long time to actually complete the cycle. What this means for you, is less charging time and more fishing time, which is really all that matters, correct?


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Voltage
14.5V
Weight
24.4 lbs
Size
12” x 6.25” x 2.75″
Warranty
3 years

Technical Specs

Input 80-120V AC 60Hz
Output Power 40A = 10Ax4 (independent)
Output Voltage 14.5V

Protection Specs

Waterproof Rating IP67
Over voltage output protection Yes
Short circuit protection Yes
Reverse polarity protection Yes
Over current protection (dual blade): fuse) Yes

LED Indicator Specs

Fully charged or No connection Green
Normal Charging Red

  • It is extremely compact, with convenient mounting options that will make installation a breeze! Heavy Duty aluminum alloy body works great as a heat sync, plus creates a robust charger that is nearly indestructible.
  • No buttons to push, lights to diagnose, and no long user manual to ponder over. Simply mount it, connect it and use it!
  • This charger can also effectively charge your AGM or SLA batteries, (when charging these types, we recommend disconnecting the charger soon after the batteries become fully charged).
  • This charger can also be used in many different configurations!
    • Example: 1 battery = 4 positive leads and 4 negative leads, you will now be charging at 40A to 1 battery.
    • Example: 2 batteries = 1 lead set to each battery, remaining 2 lead sets are empty, now you are charging each battery at 10A Since each lead set is 100% isolated for all the others, this charger is truly versatile! If you at any time have questions about using this charger in your application, please contact us freely, we would be more than happy to discuss your needs with you and help you make the best decision. Your satisfaction is, and will always be our first priority!

THE MILLERTECH® MARINE CHARGER 3 YEAR GUARANTEED WARRANTY IS SIMPLE!

TERMS:
From the date of your charger purchase through year number 3 of ownership, your charger is covered. If it stops working during this time, we will repair or replace it with a charger of equal or greater value for FREE!

SHIPPING:
We cover all shipping costs associated with shuttling your charger 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® charger is completely covered for everything!

PROOF OF PURCHASE:
You don’t need one. If its Millertech®, it’s covered!

Customer Reviews

Justin L
Rating: 5/5
Exceeded expectations
We went with millertech because of the rave reviews and they haven't disappointed. Great products, and people behind them.
Mon Sep 29 2025 01:05:30 GMT+0000 (Coordinated Universal Time)
Sean Davis
Rating: 5/5
New Battery set up
Great choice wish would have done sooner.
Tue May 13 2025 17:36:07 GMT+0000 (Coordinated Universal Time)
Jeff Grzywinski
Rating: 5/5
Switched out the Minn Kota precision.
Works great. I feel like I get a better charge out of this than a standard marine charger.
Tue Apr 09 2024 01:52:12 GMT+0000 (Coordinated Universal Time)
David Hasty
Rating: 5/5
LIFE PO 4 bank Charger
Works great, first time switching over to lithiums and a 4 bank charger. Have no complaints, everything has worked flawlessy
Sun Apr 02 2023 02:49:08 GMT+0000 (Coordinated Universal Time)

What the pros are saying about Millertech batteries