EarthX® ETX36C Lithium Ion Battery w/ FULL BMS for large V-Twin Motors - 3.9 Pounds 320CCA 12.4Ah - 2 Year Warranty - Made in USA

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EarthX offers the most innovative and technology advanced batteries on the market with an exclusive fully integrated battery management system (BMS) to protect the cells for performance and longevity. 

The ETX36C is a lithium iron phosphate (LiFePO4) starter battery that weighs only 3.9 pounds, and has 320 cranking amps! 

This can also be used as a compact replacement size for the ETX36D or the ETX36E or an upgrade for ETX24C.

ETX36C Features:

  • Voltage: 13.2 Volt
  • Capacity: 12.4 Ah
  • Type: LiFePO4
  • Length: 5.9"
  • Width: 3.4"
  • Height: 4.5"
  • CCA: 320 CCA / 680 PCA
  • Warranty: 2 Year
  • Water Resistance: IP66 (Water/Wash Down)
  • Made In USA

EarthX 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 ifthey 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. You can choose an OEM fit or a compact fit
  • Designed, engineered and assembled in the USA

Why choose an EarthX lithium battery?   S.P.E.E.D

  • S = SPEEDY CHARGING- EarthX ETZ batteries will charge 2-3X faster than a lead acid battery.
  • P = POWERFUL and LONG LASTING- EarthX ETZ batteries crank your engine over easily and will improve your starting performance as their resting voltage is 13.3V compared to a lead acid which is only 12.6V. Also EarthX ETZ batteries life span is much longer than a lead acid battery and can last years longer!
  • E = EXTREMELY LIGHT WEIGHT- EarthX ETZ 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 ETZ 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 ETZ batteries have a much slower discharge rate than a lead acid and the need to charge them is greatly reduced.


  • Length = 5.9"
  • Width = 3.4"
  • Height = 4.5"
  • Weight = 3.9 Pounds


  • Length = 150
  • Width = 86
  • Height = 115


  • Battery (Charged)


  • 26012-0589
  • 26012-1275
  • 26012-1296
  • 26012-1357
  • 26012-1368
  • 26012-1371
  • 278001763-WP
  • 278001882-WP
  • 31500-HR0-F01
  • 31500-HR0-F01AH
  • 31500-ME9-677AH
  • 33610-03G00
  • 33610-03G10
  • 33610-10F10
  • 33610-10F11
  • 33610-31G00
  • 33610-31G01
  • 33610-38B30
  • 33610-38B50
  • 33610-38B60
  • 33610-45C00
  • 33610-45C30
  • 515176151-WP
  • 65948-00A
  • 65958-04A
  • CB16B-A1
  • ETX18C
  • ETX24C
  • ETX36C
  • ETX36C-WP
  • FTH16-BS
  • FTH16-BS-1
  • FTZ16-BS
  • FTZ16-BS-1
  • GYZ16H
  • LTX36C-WP
  • PC545
  • YB16
  • YB30CL-B
  • YTX14H-BS
  • YTX16-BS-1
  • YTX20CH

If you have a high compression V-Twin S&S engine greater than 110ci , you may exceed 680 cranking amps and will exceed the ETX36’s capabilities.

The ETX36 series is limited to 680 max cranking amps.  There are two upgraded options: ETX900 (900PCA) or the ETX1200 (1200PCA).

Big Dog motorcycles need the ETX900 and custom bikes/V-twins over 124ci need the ETX900 or ETX1200.

Terminal adapters are included with this battery if you have a front mount connection with the standard size of 6mm.

Keep in mind that we have a Lithium Ion battery for just about ANY application!