Lithium battery question

[otmaximus]

I posted this in the 3G/4G Forum, but this is a better fit. 

I think I’m getting to the end of life of a Li battery I installed many years ago. But it isn’t behaving how a traditional lead-acid battery does when it’s done. With an AGM battery, it will struggle to turn over, stop, then maybe I’ll here the starter relay click when the button is pushed. 
last week when I went to start my bike, the engine began to turn over, then it lost all power it cut out quickly and completely, including the lights and digital clock. 
if I recall, with an AGM, the lights would come back on when the starter button was released if there was still a little juice left, just not the CCA to turn the engine over. 
Does a Li battery behave differently because of its design?

i brought the battery into a shop to be tested and he said the meter was telling him the CCA was reading low but he wasn’t really confident b/c he wasn’t sure the reader was set up for Li batteries. 
I put the battery on my Deltran Li charger and after about an hour it showed full charge, but I don’t know if it should have taken longer. The clerk at the store said if it showed fully charged quickly it could mean the battery capacity was limited. 
i don’t keep the Li battery on the tender like I used to with AGM batteries. With AGM batteries I kept them on the tender every night, all the time (I ride every day) and I would get 7-8 years out of a battery. It’s probably been about that long that I’ve had this Li battery installed, so it very well could be the end of its life. 
But if what I’m describing sounds more like a short or something I want to try to find that problem. 
Because the bike was able to start after the initial trouble. The next day after the first time I experienced the “dead battery” it started right up. But that’s when I took it out to get tested. 
 

Paul in SoCal 

[raYzerman]

It is certainly interesting behaviour with the lithium... yours is the first long term report I've seen.  BTW, what brand... and some may have different protection features to shut them down when the voltage gets to a certain point, hopefully the newer ones do.  A lithium most likely will not recover from a full discharge.  Not the same technology, but my power tool Li-ION's have a shut-down feature that won't let them go below 4V.

[otmaximus]

The brand is called Earth-X or something like that. I bought it from a vendor at the IMS bike show a while back. It would be easy enough to question the quality, but reality it’s lasted about as long as I expected it to. 
I put it on the battery tender and it’s been back to normal. Maybe it’s got a little less starting power or maybe it’s just my mind playing tricks on me. 
As a backup I bought an AGM, but I’ll wait to install it until the Lithium starts to do something weird again. 
Paul in SoCal

[raYzerman]

Shorai was one of the first, but I hear good things about Earth-X if one is going the Lithium route.  I can get 6-7 years out of an OEM Yuasa, prolly get 5 years out of the aftermarket Yuasa, that's about $20 a year and totally recyclable unlike Li.