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Earth X Lithium

Use the chart and button
below to order the
correct battery for you
Which battery is right for me?

Since Earth X batteries are designed for
a specific bike and its needs, you will
need to order a specific battery.  But
since we love you guys, we took a little
bit of the guess work out of it:
the RSV4
uses the ETX18B
.  For all other bikes,
use the chart below
Earth X batteries are designed to be a drop-in replacement of a standard 12 volt lead-acid battery, so no
special or expensive charger is required.  Our batteries will work with any vehicle charging system and
“modern” lead-acid battery chargers, thanks to the built-in battery management system.  And they are
an exceptional value given the fact they last years longer than a lead-acid battery.

There is a lot of talk about lithium batteries these days, but not all lithium batteries are equal.  There are
dozens of different types of chemistry used in lithium batteries.   These batteries use cells made of
Lithium Iron Phosphate (LiFePO4) chemistry that was developed in the U.S.A.  This chemistry is the
highest performance and safest on the market today.

Lithium batteries are fundamentally different than lead-acid batteries.  The lithium cells inside the 12V
battery need electronics to monitor and balance the voltage/charge of the individual cells.  Other
companies sell a balancing charger, which you have to plug-in periodically to "top off" and balance the
cells.  Inside every one of our batteries is a microprocessor Battery Management System (BMS) that
monitors the charge level of each cell and balances the charge when needed, protecting the cells from
overcharge or over-discharge. What this means for you is more starting power, longer battery life, and
the safest lithium motorsport battery on the market.  

All types of lithium batteries (not just these) require a “BMS” that monitors and balances the cell charge.
Our newest generation BMS now comes complete with over discharge protection in addition to over
charge protection, short circuit protection and cell charge balancing!

More detailed information such as charging and construction details is listed below the reference chart
Other Facts About Lithium Batteries

Lithium batteries voltage remains relatively constant while
discharging, while voltage for a lead-acid battery decreases.
A lithium battery can use 100% of its storage capability
(measured as Amp-Hour, Ah), while a lead-acid battery
typically only uses 30%. Lithium battery’s cranking power will
not drop-off, and it will crank your engine longer. But when
the lithium battery runs out of power it does so abruptly. Just
like your lithium powered hand tools.  LiFePO4 cells by the
nature of their chemistry are 3.3 volt. 12V lithium batteries,
like our motorsport batteries, are created by using 4 cells in
series (technically it is a 13.2 volt battery). The lithium cells
(in series) in a 12V battery pack diverge in both levels of
charge and capacity with each charge/discharge cycle. This
condition reduces the performance of the battery (reduces
capacity) and can lead to overcharging or over discharging a
cell. A cell is permanently damaged if over charged or over
discharged just one time. In the case of overcharging, cells
can rupture, and the entire battery will need to be replaced.
Inside every one of these batteries is a microprocessor
Battery Management System (BMS) that monitors the charge
level of each cell and balances the charge when needed,
protecting the cells from overcharge or over discharge.

Battery Charging

Unlike lead-acid batteries, you don’t need to trickle charge
these batteries during the off season. We recommend that
you do NOT trickle or float charge them. No maintenance is

In the event you have to charge the battery, use any
“modern” lead-acid battery charger or 13.2V Lithium battery
charger. By “modern” we mean a charger that was built in
the last 10 years that automatically turns off when the battery
is fully charged (based on volts). Also, be sure the charger’s
voltage level does not exceed 15V. If the charger does not
display the voltage reading, then use a voltmeter to check
the voltage while charging.
Select Model
The key advantages of Earth X lithium battery over lead acid
batteries are;

  • Light-weight -- 70-80% less weight
  • Long Service Life -- Up to 2000 charge / discharge
    cycles (~3-8 years), over 4 times the life of a lead-acid
  • Longer Storage Life – due to extremely low self-
    discharge rate, no need for charging in the off-season
  • Environmentally Friendly -- non-toxic, non-
    contaminating, lead free and no hazardous materials
  • Wide Operating Temperature Range (-30 C–+60C) --
    lithium batteries are dry cell technology and will not
  • Fast Charge -- can be fully charged in less than a half
  • Maintenance Free
  • No Special Mounting Direction
  • Safety and Reliability -- internal cells are continually
    monitored by an integrated battery management system

The key advantages of Earth X lithium batteries over
competitors lithium batteries;

  • All our products are engineered in the USA
  • We use American battery technology, the most
    advanced lithium battery technology in the world
  • Our batteries are assembled in the USA with US and
    foreign components.
  • Built-in battery management system for maximum
    performance and longest life -- no expensive
    balancing charger needed.
  • Flexible battery connection -- our batteries can be
    used in either left or right side polarity applications.
    You also have the option to connect the battery leads
    directly to your vehicle.
  • Integrity - our battery specifications are accurate.  We
    won't tell you our battery has 500CCA when it does not.  
    We test all our batteries to industry standards (SAE, UL,
Case Sizes (LxWxH)

  • Case A: 4.5x2.6x3.7in

  • Case B: 5.3x2.6x4.1in

  • Case C: 5.9 x 3.4 x 4.5in

  • Case D:6.9 x 3.4 x 4.5in

  • Case L:5.4 x 3.5 x 4.9in