I wish that I could have experienced even half the success that I see many of you have had with the Lithium batteries in your FJR's. I have had nothing but problems in mine, costing me close to $1000, much of it, probably, needlessly, and due to a learning curve. I purchased an '08 FJR1300 from a friend of mine to replace my FJ1200, which I had experienced great success using a Shorai Lithium Battery. I sold the FJ1200 with a 3 year old Shorai Luthium Battery in it that still started the bike without any issues. The only accessories that I had installed on my FJ1200 was a GPS and a USB phone charger. I would leave the bike stored in my garage for two weeks at a time without starting it, or attaching a Shorai charger, and it would still crank over and start. Of course, if I did not run the fuel through the carbs before three weeks was up, then, I had issues with them gumming up.
The problems with my '08 FJR1300 AXCB just seem to be well beyond any prior experience that I have had with any of the other Lithium batteries I have installed in any of my other bikes or quads. I replaced the battery in my FJR1300 when it died, with the recommended Shorai Lithium battery because I wanted to not only decrease the top-heavy weight, but be able to start my bike quicker, while also experiencing the additional benefits of Lithium batteries. I also reconnected the USB Phone charger that I was using with the original AGM battery that came with it when I bought it. When I was not riding it, I would connect the Shorai battery tender. I quickly found that if I left the tender off for three days or more, the battery would not start my bike. I continued to ride it for about thirty days, but it came to a point where, even after leaving the tender charging overnight, by the end of the next day, if I made 5 stops, then the bike would either not start for the sixth time, or turn over a couple of times, and then it would not start. If I charged it overnight again, it would always start the next morning and for approximately another 5-6 times.
I checked the charging system and it was not charging, so I took the bike to my mechanic to check, and he had to replace the regulator. I also had him confirm that the alternator was charging sufficiently and he said that it was, but after another 30 days, the same thing started occurring again. This time, we found that the Shorai Lithium battery had gone bad, which Shorai replaced under warranty. I replaced the battery and commenced to connecting the tender every night, but after another month and a half, the same thing started occurring again. Once again, the NEW regulator had failed. So after replacing two voltage regulators, two Shorai Lithium batteries, and the mechanics charges, I decided that I would replace the Battery with a high output AGM, which has worked fine since its installation.
I did some research and talked to a few motorcycle mechanics and other Lithium battery manufacturers and was told that Lithium batteries do not like the parasitic draw of even a USB charger connected to them when the bike is sitting, but I am not an engineer, so that may be open for further discussion. I had two parasitic draws connected to my '08 FJR1300 in addition to the computer and clock, one in the fairing storage compartment connected to the cigarette lighter outlet, and one connected directly to the battery that was routed to my phone mount on the handle bars.
Before swapping out the the Shorai battery, I did try disconnecting both phone and GPS chargers, but even after 5-6 days sitting, the battery would not start the bike, even with a NEW regulator and a NEW battery. I do not know if the clock or other circuitry in the gauge panel draws enough current to drain the Lithium battery in the same, but slower, manner that the USB chargers do, but I am just at wits end.
I have become highly disillusioned with Lithium batteries at the moment, since I am really tired of getting stranded, and have consoled myself with the fact that this '08 FJR may just be stuck with the sealed AGM battery. Maybe my bike is too old and the parasitic draw is more than with the newer FJR's, I do not know.
If anyone else has any input, please let me know. Any and all comments welcome!!
All bikes have parasitic loses. It sounds to me like you have something else going on. Both bikes I put Shorai batteries on had/have similar things hooked to the battery as you do, and I have never put them on a tender....not once. And zero problems.