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

Ultra Fast 12V 20A Waterproof Lithium LiFePO4 Onboard 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 Waterproof Lithium LiFePO4 Onboard 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 Category:
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).

Waterproof Rating


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.


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

Suitable for:

  • Charging 12v batteries fast
  • Charges at a rate of 20 amps
  • Optimal for DL+ 12v 60, DL+12v 135 & DL+ 12v 315Ah
  • 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 Waterproof Lithium LiFePO4 Onboard Battery Charger

Love this company’s products
Highly recommend


well made charger . great customer service

Ray Brignolio

We run a 60 amp hr 12 volt start battery in the race boat its a 1300 hp drag boat and we normally only top battery off for about 1/2 hour after
Racing all day it cranks faster the agm batterys ee have ran in the past and would probably last all weekend with out charging if needed
I have a 135 amp hr 12v start battery we use in our race trailer for the winch and rear door powers all the
12 volt lights and refrigerator
With out a problem
Been a big weight saving as it replaced 2 -12 volt lead acid batterys
That didn’t perform nearly as good
As Dakota lithium

Jake Bantra

Hands down the best customer service I have ever encountered. Long story short I had a 12v 60h battery go bad for some reason. I called the claim staff, Within 20 hours al the way from Seattle Washington to Kentucky I had a new battery on my door step. I told the guy I was leaving town to fish a big tournament and he took care of me like I was family. I also had him send me the biggest sticker they had to display on my boat.

Scott Baumgartner

Excellent charger


Easy to use fast

John D.

Cancelled this from order.

Jeffrey Maka

Just wish I had an extra set of ring leads for my other battery so I could attach the charger to either one

Ray Brignolio

Charges fast


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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