Dakota Lithium | Marine 4 Bank, 40-Amp (10-Amp Per Bank) 12V Onboard Lithium Battery Charger
Overview
ULTRA-FAST CHARGING FOR 12V DAKOTA LITHIUM BATTERIES
The Marine 4 is a rugged, onboard 12V lithium battery charger designed for maximum performance and reliability on the water. With 4 independent charging banks at 10A each, it rapidly charges up to four Dakota Lithium or any 12V lithium batteries, ensuring a balanced and fully charged battery bank every time.
Key Features:
- 4 Independent Charging Banks – Charges up to four 12V lithium batteries simultaneously at 10A per bank.
- Optimized for LiFePO4 – Engineered exclusively for lithium batteries to maximize lifespan and performance.
- Onboard Convenience – Waterproof and permanently installed for hassle-free charging.
- Durable & Waterproof – Fully sealed, shockproof aluminum case (IP67-rated) withstands extreme conditions.
- Passive Cooling System – Built-in aluminum fins dissipate heat for enhanced durability without fan failure.
- Versatile Compatibility – Ideal for golf carts, trolling motors, RVs, boats, and battery banks in series or parallel.
Designed for the toughest environments, this charger is built North Dakota tough to keep you powered wherever you go.
Specifications
For 12 volt lithium batteries
We highly reccomend you use a LiFePO4 compatible charger. 12v chargers for lead acid batteries may work, but will decrease performance and lifespan of the battery.
Free Adapter for 24V, 36V or 48V single batteries, by request
Easily charge a 24V, 36V, or 48V single battery, or a bank of 12V + 24V or 36V batteries. (adapter available by request for no additional cost)
Charger rating
INPUT 100-120VAC, 50/60HZ. OUTPUT: 14.4 volts, 40.0 amps, 10 amps per bank / channel
Terminal Connections
SAE connections make it easy to connect your charger to the battery. 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.
Smart BMS communication
Charger will restart or "wake up" a Dakota 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.
Lead Wire Lengths
Charger to SAE plug 36"SAE to ring terminals 24"Total length connected 60"AC Power Cord to Charger 60"
How fast will my battery charge?
Charges at a rate of 10 amps per battery (4 batteries supported). To determine your charging speed take the amp hour rating of your battery and divide by 10. For example, a 54 amp hour battery (Ah) would charge in 5.4 hours.
Can I charge my battery faster?
For most applications a charging time of 3 - 10 hours provides the longest lifespan for your battery. But if you have an application where you need rapid charging Dakota Lithium batteries can be safely charged in up to 1 hour (at a rate of 1C). For example, you could use a 20 amp charger with a 23 Ah battery for a 1 hour charge time. Charging at a 1 hour rate does reduce the lifespan over time. In our laboratory testing we found that the longest lifespan for Dakota Lithium batteries was at a charging speed of 0.3C or less (we recommend that the charger amp rating is 1/3 or less of the battery amp hour rating for longest lifespan).
What voltage should LiFePO4 batteries be charged at?
14.4 volts is recommended for Dakota Lithium (LiFePO4) batteries. This charger charges at 14.4 volts.
Waterproof
Built for marine use. IP 67. Internal components are sealed in a waterproof putty that makes it impossible for water to short circuit the charger. Wiring is SAE waterproof plugs.
