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EarthX Advanced Lithium Battery

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You've found it. This is (in our humble opinion) the holy grail of batteries.

Why? Well, it's the only lithium battery contender with a fully integrated on-board battery management system. Sound like marketing mambo-jambo? It's not. 

Brass tacks differentiators:

  • It will protect itself from over-discharging.
  • It will protect itself from over-charging.
  • Due to the built-in management system, you can use a cheap/generic charger, rather than forking up for a specialty li-ion charger. 
  • EarthX makes these bad boys in Colorado, which we think is pretty cool (as opposed to shipping them from over seas).
  • EarthX backs these up with a full value 2 year warranty, which is music to anyone's ears who has ever dealt with a "lemon" lithium battery. 

If you're on one of the larger adventure bikes and tend to run a bunch of electronics/heated gear through winter weather, you may want to consider upgrading from the ETX24C to the "Ultra Cranking" ETX36C for some extra cold season ooomph. 

Here's what EarthX has to say about them:

Exclusive Features:
–Over discharge protection (#1 killer of all batteries and other brands do not protect against this and void the warranty)

–Over charge protection (Other brands do not protect against this and void the warranty)

–Built in cell balancing technology (Other brands must use a special balancing charger in order to level the charge of each cell. Your vehicle is what charges the battery most of the time, if you do not have built in cell balancing technology, how is your battery balanced while using it?)

– Short circuit protection up to 1,000 amps (Other brands void the warranty if you short the battery)

–Excessive cranking protection (Lithium technology is different than a lead acid battery and needs to be protected from heat)

–2 year full coverage warranty (Not a prorated warranty that offers you the replacement at a discounted rate if they don’t void the warranty)

–Unique and exclusive design (Custom design with the terminals down the center and most models come with solid brass terminal adapters for extremely easy installation)

– Designed, engineered and assembled in the USA

Why choose an EarthX lithium battery? S P E E D
S= SPEEDY CHARGING- EarthX ETX batteries will charge 2-3X faster than a lead acid battery.

P= POWERFUL and LONG LASTING- EarthX ETX batteries crank your engine over easily and will improve your starting performance as their nominal voltage is 13.3V compared to a lead acid which is only 12.6V. Also EarthX ETX batteries life span is much longer than a lead acid battery and can last years longer!

E= EXTREMELY LIGHT WEIGHT- EarthX ETX batteries are up to 80 percent lighter than their lead acid equivalents. Lighter weight = better performance! This saves an average of 2-3 lbs. for dirt bikes, 6-8 lbs. for street bikes and 10-20 lbs. for touring and cruiser bikes.

E= ENVIRONMENTALLY FRIENDLY- EarthX ETX batteries are environmentally and user friendly. Nonhazardous, nontoxic, nonpoisonous. Will not sulfate, will not corrode, will not freeze, will not boil over, will never need water added and will not spill acid EVER!

D= DISCHARGE RATE- EarthX ETX batteries have a much slower discharge rate than a lead acid and the need to charge them is greatly reduced. 



  • ETX36C - 990/1090/1190/1290 Adventure/Duke/RC8/SM "Ultra Crank"
  • ETX24C - 990/1090/1190/1290 Adventure/Duke/RC8/SM
  • ETX18F - 390/620/625/640/690 Enduro/Duke/RC
  • ETX12A - 350/400/450/600/626 EXC/XC 
  • ETZ5G - 450 SX 2014+

Select your bike from the dropdown.



This product can expose you to chemicals known to the State of California known to cause Cancer or birth defects and reproductive harm. For more information go to:

Customer Reviews

3 Based on 6 Reviews
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    David C.
    United States United States

    It fucking fried my power

    It fucking fried my power commander i will never buy again JUNK

    Norberto L.

    Costs more than it seems to be worth

    As per title above

    CHRIS K.
    United States

    Dead battery

    1 volt showing. Would not charge using correct charger. EarthX was good about the warranty. Shipped new one right out.

    Randall V.
    United States

    Earthx battery in KTM 1090 is not the same as stock

    The center mounted terminals on the battery make it extremely difficult to mount this battery using the stock bolts and wires. It was a big letdown for me to have to remove the rubber battery tray cuz it just wouldn't fit. it also required flexing the big and thick heavy battery wires in a way that was very difficult and I don't believe will be good for the wires or the battery terminals.

    Patrick Smit
    Perth Australia

    Strong and Tough

    Great product. Easy to fit the 1190 Adventure R with supplied foam spacers. Impressive cranking power. The battery survived a 100km/h crash that destroyed the bike.

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