Even new batteries can fail,
especially if they haven't been initialised properly (filled with electrolyte the correct way and allowed to stand long enough for it to diffuse through the plates sufficiently)
AND then fully charged for at least 8 hours on a proper charger (not just a trickle charger); but then our Spyders do have a slight battery load over time.
So despite your current battery being 'new-ish', it still
could have failed in just a couple of days after installation, and even if your 'new-ish' battery was a good quality battery with a capacity better than 350 CCA and 21 A/hrs (and the OEM 2020+ Spyder batteries definitely are
NOT any of that, so if it was just a 'like for like' replacement for the OEM battery, then it was likely just not up to the task for very long to start with, and definitely not if it wasn't initialised and charged properly
before installation!

) then if you've left your Spyder un-tended without a quality battery
maintainer connected for too much more than a month or so, chances are the battery is now flat enough (if not completely dead) that things won't necessarily work properly when you try to start it up next time! Sorta like what you're experiencing here...
If any of that ^ has occurred &/or you do any of that running your battery down stuff too often, then it's highly likely that your current battery is now as useful for starting the Spyder as is a slice of water-logged toast!
There's a
LOT here on the Forum already about batteries, load testing them, maintaining them, and how extremely power hungry our Spyders are, leading our Spyders to be prone to odd codes etc like this one simply due to poor battery voltage - so might be worth your while to do some searching and reading, if not charging &/or replacing of batteries. It just might be that installing a new, properly initialised, and known fully charged battery that is definitely of sufficient capacity for the job (at least 350 CCA & 21 A/hr) will resolve your problem; and it's even more likely that if your current battery is involved but
IS NOT quite up to the task, then nothing short of getting a battery that
IS up to the task will fix things for you, even if there is more going on than
just the battery!
Just Sayin'
