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  • Ultra Fast 12V 20A Lithium LiFePO4 Battery Charger
Ultra Fast Charging for 12 volt Dakota Lithium batteries

Ultra Fast 12V 20A Lithium LiFePO4 Battery Charger

(33 reviews)
  • Free Shipping to Lower 48
  • Free Fast Charge Anderson plug wiring kit included
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Ultra Fast 12V 20A Lithium LiFePO4 Battery Charger

(33 customer reviews)



20 amp LiFePO4 charger for fast charging of larger batteries. Optimal for Dakota Lithium 54Ah, 100Ah, and 170Ah batteries. All 12 volt Dakota Lithium batteries should be charged using a LiFePO4 compatible charger.

Available on backorder

SKU: 12v20acharger Categories: ,
Need tons of power? Bulk pricing discount
Need tons of power? Bulk pricing discount


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

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).

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.

Add-On for 54Ah, 100Ah, or 170Ah

A 10 amp charger is included with every Dakota Lithium 54Ah and 100Ah battery purchase. This charger is an add-on and charges twice as fast. Great for RVs, Boats, Solar, or other applications where you need to charge your batteries as fast as possible.

Suitable for:

  • Charging 12v batteries fast
  • Charges at a rate of 20 amps
  • Optimal for Larger 54Ah, 100Ah, 170Ah batteries
  • Compatible with all 12 volt Dakota Lithium Batteries 23Ah and larger
  • LiFePO4 Compatible Charger
  • Lithium Titinate Oxide (LTO) Battery Charger
33 reviews for Ultra Fast 12V 20A Lithium LiFePO4 Battery Charger
Bill Hassett

Great product and a good aggressive company

Henry C

Charger worked great . Would have purchased at least a 200 Ah battery if you could ship using OTHER THAN FEDEX. Fedex uses contractors who are less than adequate for rural deliveries, rural deliveries are necessary for off grid development. If you plan on providing for this market, then maybe you should change your delivery service. If you can’t use other than FEDEX than forget my business. I can be quixotic.



I’ve been doing solar and LiFePO4 battery installations for a while now and this is one of the best chargers I’ve ever had the pleasure of using. Fantastic.

William D

Great little Lithium charger.

Kerwin Lewis

I wished the connections was different but ok

Phillip Snartland

The charger works great. I will be using it to charge the LiFePO4 battery on my camper.



Gary Thomas

Great product charges fast but easy on the battery

William M.

Well built and does a great job!


For more information or larger quantity inquiries, visit our B2B page or please call our sales team at 1-855-743-3279.

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