Dakota Lithium | Ultra Fast 12V 20A Waterproof Lithium LiFePO4 Onboard Battery Charger

Ultra Fast 12V 20A Waterproof Lithium LiFePO4 Onboard Battery Charger – Rapid, Rugged Charging for 12V Dakota Lithium Batteries

Get back to full power faster with the Ultra Fast 12V 20A Waterproof Lithium LiFePO4 Onboard Battery Charger. Designed for high-capacity 12V Dakota Lithium batteries, this charger delivers fast, efficient, and safe charging—even in tough environments.

Key Features:

• 20A Rapid Charging
  Recharges 54Ah, 100Ah, and 170Ah lithium batteries with speed and precision—ideal for larger systems that need minimal downtime.

• Optimized for LiFePO4 Batteries
  Tailored for 12V LiFePO4 chemistry, this charger ensures maximum performance, battery protection, and long-term health—especially for Dakota Lithium batteries.

• Rugged & Weather-Resistant Design
  Encased in high-tensile aluminum, this charger is built to handle heat, moisture, and vibration—perfect for marine, RV, or off-grid use.

• Safe & Easy Connection
  Includes an Anderson plug with ring terminals for secure, reliable, and plug-and-play charging.

• Not for Lead-Acid Batteries
  This unit is too powerful for SLA systems and should only be used with lithium-based batteries.

For smaller batteries, consider the 10A or 3A charger options.

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.

Charger rating
INPUT 100-120VAC, 50/60HZ. OUTPUT: 14.4 volts, 20.0 amps

Dimensions
5.67" x 6.22" x 2.72" (44mm x W:158mm x H: 69mm)

Terminal Connections
Anderson SB 50 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 Anderson 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.

How fast will my battery charge?
Charges at a rate of 20 amps. To determine your charging speed take the amp hour rating of your battery and divide by 20. For example, a 54 amp hour battery (Ah) would charge in 2.5 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).

Waterproof Rating
IP67

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.

Recommendation
The 12V 20a charger is great for DL+ 12V 60Ah, DL+ 12V 135Ah, DL+ 12V 320Ah