Installation Guide (This is NOT included with every battery. You may want to print it)
User Manual (This is included with every battery)
LFX Battery Specification
Frequently Ask Questions
|Who should choose a Shorai LFX Battery?|
|Racers or performance minded enthusiasts - installing a Shorai LFX battery is one of the quickest ways to remove 3 to five pounds of dead weight from your machine. Weight that is often
mounted up high on your vehicle and has a negative effect on handling.
Owners that are tired of buying a new battery every year - Shorai LFX batteries will maintain a full charge for at least a year. When time comes to put your street bike, snowmobile, watercraft, ATV, or lawn tractor into storage, just make sure the battery is fully charged, and put it away. For added security, disconnect the positive terminal to avoid any accidental drain on the battery.
Environmentally conscious owners - Shorai LFX batteries contain no lead or acid and are safe to throw away.
|YTX5L-BS or YTZ7S Shorai Replacement Choices
Most late model 4-stroke offroad bikes come with either a Yuasa YTX5L-BS (80 CCA) or YTZ7S (130 CCA) battery as standard equipment and the YTZ7S is often used as an upgrade option for the YTX5L-BS as the case sizes are almost identical. Shorai offers 3 replacement choices for YTX5L-BS or YTZ7S applications:
LFX07L2-BS12 Specs 12v, 7 A/Hr PbEq, 102 CCA, Weight 1.01 lbs
This battery is a good choice for racers due to its light weight and easily handles most light to medium duty applications. This LFX07L2-BS12 battery is 3.07 lbs lighter than the lead-acid YTX5L-BS.
Heavy Duty Recommendation:
LFX09L2-BS12 Specs 12v, 9 A/Hr PbEq, 135 CCA, Weight 1.23 lbs
If you run grip heaters, extra lights, or start and stop your engine frequently and don’t mind a slight increase in weight and cost compared to the standard recommendation, this is a good choice. This LFX09L2-BS12 battery is 2.97 lbs lighter than the lead-acid YTX5L-BS.
EXTRA Heavy Duty Recommendation:
LFX14L2-BS12 Specs 12v, 14 A/Hr PbEq, 210 CCA, Weight 1.61 lbs
The LFX EXTRA Duration recommendation is for those who want the strongest possible cranking performance and lifespan, and don't mind a slight increase in weight and cost compared to the standard recommendation. Users with extra electrical accessories used regularly when the vehicle isn't running will benefit from this very powerful battery. This LFX14L2-BS12 battery is 2.59 lbs lighter than the lead-acid YTX5L-BS.
|Shorai Battery Frequently Asked Questions|
Q. How do I maintain my Shorai LFX Battery?
A. LFX™ batteries should be recharged whenever voltage drops to 13.1 volts, or sooner. If you have a vintage, custom, or off-road vehicle which has NO draw on the battery when key is OFF, then you should only need to charge your LFX™ battery once a year.
However, most modern street bikes have a draw even when key is off, to support clock, computer, alarms, or other devices. This draw will eventually drain the battery, which is damaging and could void your warranty. So if you are not riding twice a month, then you should charge the battery every few weeks.
"Smart" lead-acid chargers with automatic cutoff may be used for periodic charging, but will NOT work as a tender/maintainer and should be disconnected immediately after charge has finished.
Older lead chargers without automatic shut-off should never be used. Improper charging is dangerous and will void your warranty. A Shorai BMS Charger - with Store Mode - is highly recommended for anyone who rides less than twice a month. Alternatively, you may disconnect the negative cable from the battery for storage, and charge once per year in that case.
Q. What makes Shorai LFX different from other batteries?
A. Shorai LFX batteries contain Shorai-proprietary eXtreme-Rate Lithium Iron prismatic cells (chemistry LiFePO4). Shorai LFX contain no poisonous lead, no dangerous acid, and do not create explosive gasses during charge, as traditional Lead-Acid batteries do. Compared to lead-acid, Shorai LFX lithium are also extremely light, have much lower self-discharge rate, do not sulfate (i.e. do not degrade while sitting unattended), and are environmentally friendly.
While there are other companies now offering Lithium-Iron based powersports batteries, all except Shorai use cylindrical cells originally made for power tool applications. Such cells are inferior to Shorai Prismatic LFX, for several reasons.
First, the cylindrical cells come only in one size, so that the possible shapes and sizes of the starter batteries they make are very limited. As such, battery fit into many vehicles may be poor, or impossible as they are too wide, or too tall. LFX prismatic cells, on the other hand, are rectangular packages which we can freely design and size according to the size requirements of the battery case. As such, Shorai LFX offer perfect drop-in fit in many vehicles and - if the LFX is slightly smaller in one dimension - high-density, adhesive-backed foam shims are included in the package. These can be applied to the battery box in a few minutes, to insure a perfect “as original” fit. No saws, cutting torches, or duct tape required!
Second is the pedigree. While power-tool cells may crank a vehicle successfully, they were not originally intended for the high current discharges in starter systems. As a result, cranking performance suffers compared to Shorai LFX, and the batteries will wear out more per every start. By contrast, Shorai LFX are the result of years of our own research and development, and are designed and produced in our own tightly controlled factory. Shorai LFX have been used in some of the most extreme high-current projects in the world, including autonomous aircraft, boats, and submarines, electromagnetic rail gun research, and more. In short, LFX have been designed from the “ground up’ to be a powersports starter battery with long lifespan and high performance, under a wide range of temperatures.
Finally there is quality control. Every Shorai LFX is built in our own ISO 9000:2008 certified factory. The primary cell ingredients are sourced from Japan, which allows us to produce the most consistent and reliable cells. Then we do individual cell quality control and matching over a six-week period, for every cell we make. This test period is two to four times longer than typical and is expensive for us. But it is worth it, in terms of product quality in the long run.
Q. Why are Shorai LFX priced below other lithium starter batteries?
A. Shorai LFX batteries are produced exclusively in our own dedicated factory, in large volume, by an experienced production team. The resulting high yields reduces our costs, and the factory-direct connection allows us to offer pricing which is competitive with traditional OEM lead-acid batteries, and lower than any other lithium-based alternative.
Q. How does the LFX "PBeq AHr" capacity rating compare to lead-acid Ahr ratings?
A. First, we need to understand that the primary job of a starter battery is to flow a large current (amperage) for a short time, in order to start a vehicle. In order to do that efficiently, the battery must have low internal resistance. Holding all other considerations equal, the larger the battery is in capacity the lower the resistance, and the better able it is to crank a vehicle under high loads.
Lead-acid makers have therefore used AHr(capacity) ratings as shorthand to indicate cranking ability, rather than a real usable capacity. The lead-acid capacity rating itself is based on a complete discharge at a low discharge rate. Under actual cranking conditions they will deliver considerably less than spec capacity. And because lead-acid batteries begin sulfating when only a small percentage of the capacity has been used, and their internal resistance rises as they are discharged, the actual capacity which can be USED may be as little as 20% of the mfg. rating. Discharge in excess will not only damage the lead-acid battery, it may not allow proper starting as voltage sags.
Shorai LFX are based on a completely different chemistry. Not only do they have less than 1/3 the internal resistance per capacity than do lead-acid, they are also the ultimate "deep-cycle" battery. The internal "completely discharged" capacity of a Shorai LFX is 1/3 the rated "PBeq" capacity. For example, the LFX18 12V series have 6Ah cells internally. But the cells are capable of 80% discharge without damage and while retaining more cranking ability. As such, the USABLE capacity(or "reserve capacity") of an LFX18 12V battery is on or very near par with 18AHr-rated lead acid batteries, while providing superior cranking performance and a vast reduction in weight. The Shorai PBeq AHr (lead-acid equivalent) rating system therefore allows users to compare a very different technology from lead-acid, but on a close apples-to-apples basis when making a choice.
Q. How does the LFX "CCA" cold-cranking rating compare to lead-acid Ahr ratings?