No he's not, Knizar.
Those Yuasa
AGM batteries that fit our Spyders come
either with the electrolyte already added, in which case you have no idea how long it's been in there &/or how long the battery has been sitting around deteriorating, probably with little or no charge in it - something that's not good for
any battery;
or if you get a replacement Yuasa AGM battery that fits/matches the part number only with that 'BS' on the end of it, then that signifies that it has a bottle of electrolyte with it, in which case you (or your retailer,
IF you trust them!

) can add the electrolyte when you're ready to use the battery and
not before; then you let it do it's 'settle the electrolyte' time; follow that with 8 hours on the charger/maintainer to charge the battery properly (they need
AT LEAST 8 hours on a proper charger/maintainer to get a full, deep charge - anything less means a shorter battery life expectancy!) and then you can install it,
KNOWING that the Yuasa battery you just installed is fresh, freshly charged
properly, and ready to go for a long and healthy battery working life!!

hyea:
That battery in the bike now
IS an AGM battery Chris, it's just old & flat; and you've probably been hiding its gradual death/failure by not regularly riding it for 30 plus minutes, preferably at Hwy speeds; and leaving it on a trickle charger for too long between rides instead of only occasionally putting it on a proper charger/maintainer! :lecturef_smilie:
Leaving any battery on a trickle charger beyond it reaching full charge
IS NOT A GOOD THING!!! :gaah: . It'll kill them pretty quickly, but it
might leave a 'surface charge' with no real depth of charge to back it up, in which case it'll generally do
exactly what you've described;
or worse, the surface charge might be
juuust enough charge to let you start your vehicle and leave home.... but then the vehicle's charging system won't be able to recharge what is essentially a 'dead battery', so if you stop anywhere, that's it, no further starts, and you're stuck away from home with a dead flat battery, one that it's likely even a jump start won't help! :banghead: