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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
Ron Hise

Works great


very nice charger


I purchased two 20A chargers in March 2021 to charge my trolling motor batteries (often while I’m on multi-day fishing/camping trips). They were great…quiet enough to charge the batteries in a motel room while I was sleeping and they worked exactly as described by DL. Both units were stolen from my truck in May. I ordered two more 20A chargers. One of these did not work. I informed the company via email, got a response within hours, and received a replacement charger in two days (along with a pre-paid shipping label to return the non-functioning unit).
Obviously, it would have been better if all units functioned, but I was impressed by the rapid response when one unit did not. Time will tell how long the charger will last, but at this point I recommend it.

William E.

Great chargers. I checked and they do produce the rated 20 A and ramp the amps down as the battery nears full charge. Seems well-built.

Ken H.

This worked very well and quite running fan. I switched it over to a solar charger but will use it again.

Zhuyin Chen

Like this product


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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