Shorai LFX User manual
InstructionDisclaimer
Dennis Kirk provides instructions to help our customers better understand how to install the
products we sell. The instructions are exact copies of what the manufacturer includes with the
product being sold.
That means the quality and accuracy of the instructions is solely dependent on what the
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To the best of our knowledge the instructions and application information contained in the
instructions is accurate. However, Dennis Kirk assumes no liability related to any errors that
may be contained in the copy of the manufacturer’s instructions we provide. Buyers are solely
responsible to insure that product use is consistent with their application.
800-969-7501 so we can further assist you regarding additional product information or any other
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Thank you for doing business with Dennis Kirk.
Do not throw away the box or any
foam packaging until after
installation is complete!!
See http://www.shoraipower.com/guides
for install guides, product manuals, and specifications.
CAUTIONS
xDo not short terminals together!
xDo not short, nor attach anything to the 5-pin
BMS port except Shorai BMS01 Chargers.
xDo not open or damage the battery case
xUse anti-corrosion spray on terminals during
use in salty and/or wet environments
xKeep batteries away from pets and children
xDo not allow discharge below 13.0V
(resting 13.0V for 12V types, 6.5V for 6V types)
xDo not allow charge voltage in excess of
14.8V (7.4V for 6V types)
xLead-acid chargers which employ a high-
voltage “anti-sulfation” routine may ‘error”
during charge, or cause overcharge damage..
Standard lead-acid chargers with peak charge
voltage spec. of 14.4V or less may be used.
However, for best performance and battery
life, we recommend Shorai Battery
Management Charger #BMS01
xFully discharge before disposal
CONTENTS
xShorai LFX Starter Battery, with one set
terminal screws/nuts
xSpare set terminal screws/nuts (A3 steel, tin
plated)
xFive Shorai Decals, in three sizes
xVarious sheets of high-density, adhesive-
backed foam sheets for LFX fitment to stock
battery box (if needed)
xOuter packaging, with battery specifications
and dimensions listed
xThis User’s Guide
INSTALLATION
First, remove the original lead-acid battery from
your vehicle, according to the maker’s guidelines.
Compare the original battery side-by-side with
the new LFX battery. First check that the Polarity
(+/- terminals) arrangement is the same on both. If
not, contact Shorai directly for advice. Next check
that the LFX battery does not exceed the size of the
original in any dimension (length, width, height). If
the LFX is larger in any dimension, and therefore will
not fit into the stock battery box, please contact
Shorai directly.
Assuming that polarity and size are correct, now
compare the original battery to find any dimension in
which it is larger than the LFX replacement.
For example, the two may have the same width, but
the original is 25mm taller, etc. For any such
difference, apply the appropriate thickness of the
included adhesive-backed foam pieces to the
vehicle’s battery box, so the LFX battery fits snugly
inside and can attach to the battery cables. (Image
below: 5mm= 0.2”)
The LFX batteries can bolt cable eyelets to either
the top or front sides of the terminals. Choose
whichever allows best cable fit. Max torque for the
terminal screws is 30kg/cm (27 inch/lb.). Do not
over-tighten. A quality anti-corrosion spray on the
terminals is recommended if used in salty and/or wet
environments.
Check that the positive terminal of the LFX
battery cannot short against any part of the vehicle;
and be sure that the original positive terminal cover,
if any, is re-installed on the LFX battery before the
battery box cover is fitted.
Shorai LFX batteries are charged to 60% of
capacity when shipped. As such it is best practice to
charge the battery before first use. Do avoid
extended cranking tests after install. Owners of
Shorai BMS01 charger systems may use the CHARGE
mode to fully top the battery, as the BMS01 will
insure ideal cell balance and perform diagnostics to
guarantee best performance. Otherwise an hour on a
proper lead acid charger before first use should be
adequate (max charge rate should be 2A in this case).
USAGE
The most damaging two conditions for any starter
battery are prolonged storage at high temperatures,
and allowing the battery to be deeply discharged.
Compared to lead-acid batteries, LFX have less
than 1/4th the average self-discharge rate, and
therefore can be stored much longer without a
charge. In fact, if there is no current flow in the
system when your vehicle’s key is OFF, Shorai LFX
can be stored one year or more, without damage.
Vehicles which do have a current drain while
turned off will need the battery periodically charged,
depending on the rate of current drain. If you ride at
least two hours per month year-round, that is usually
sufficient. For storage in excess of a month, the
Shorai BMS01 Battery Management System is highly
recommended, as it has a dedicated STORE mode
which monitors battery voltage levels and
automatically restores ideal voltage levels for best
battery life, while also balancing the internal cells and
monitoring battery condition. Seasonal storage can
also be achieved by disconnecting the negative
battery cable, to eliminate any key-off draw on the
battery.
High temperatures accelerate aging for any
battery type. When LFX are stored, the ideal
temperature for maximum lifespan is 1qC (34qf). As
such, it is always best to locate your vehicle in the
coolest possible location while in storage. If you
know that your vehicle will be unused for an
extended period of time - and during that time it will
be exposed to high temperatures - you may remove
the LFX and store it in a cool place - even a
refrigerator. If so, do be sure that the terminals are
taped and the battery bagged in plastic to avoid
possibility of shorting or corrosion. Running the
BMS01 system STORE MODE on the LFX battery
before cool storage will insure optimal results.
Again, these temperature notes generally apply
to batteries of any type, and that it is not necessary
to be overly concerned. This storage advice is for
those who want the longest possible lifespan from
their new Shorai LFX batteries.
Thank you for choosing Shorai LFX! We hope and
expect that you’ll be pleased with the performance of
our products, for years to come. Do be sure to
contact us if you have questions, problems, or
suggestions; we’re here to help.
SHORAI INC.
845 STEWART DR., SUITE D
SUNNYVALE, CA 94085
TEL: 408-720-8821
FAX: 408-720-1537
See shoraipower.com for full product details, install
guides, RMA Return forms, and much more…
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