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Millertech 4 Bank, 40-AMP 12V Onboard Lithium Battery Charger

Original price $429 - Original price $429
Original price $429
$429 - $429
Current price $429

Often Purchased Together

This MillerTech, 4-bank, marine Lithium battery charger
was specifically designed for the avid fisherman that only
settles for the very best!

MillerTech's 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!

This charger produces 40A continuous, meaning 10A are
going into each of your 4 batteries at all times, (from start to
finish) unlike conventional chargers that taper off half way
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?
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, or 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 dis-
connecting 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!

We highly recommend you use a LiFePO4 compatible charger. 12v chargers for lead acid batteries may work, but will decrease performance and lifespan of the battery.


INPUT 80-120VAC, 60HZ. OUTPUT: 14.5 volts, 40.0 amps, 10 amps per bank / channel


Install the ring terminals using the bolts on your terminals. Bolt black to your black terminal. Red to your red terminal. Do not short circuit. Then connect the charger via the SAE plug when you need to charge.

Red light on the charger will turn on when charging. Light turns green when the battery is full or when no connection.


Charger will restart or "wake up" a Lithium BMS that has turned off a battery due to short circuit or excessive amp draw. Simply connect the charger to the battery to initiate a restart.


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