So I have had my Shorai and charger for one year. I bought the charger on eBay so it was used but worked so I assumed all was well. Lately, I couldn't get the charger to charge the battery. It would always flash according to it being overly discharged. After dealing with that for a few weeks, I purchased a new Shorai and decided to replace the wiring for the charger bc I rode off at the track with it connected to my bike so it was frayed. Well long story short, the issue wasn't the battery at all it was the charger cables...the battery works fine now as the charger actually charges it.
The new battery is being stored in my fridge as per SHorai in the manual.
Iíve been running a 4 cell antigravity battery on my trackday bike for about a year now. A little bigger than a deck of cards and almost as light. On the street, I attach an led taillight and led spotlight and it runs fine.
These things are awesome.