You want a portable power station that actually handles a fridge during a blackout and keeps your gear charged on weekend trips. Buying the right capacity now means you only buy once instead of upgrading in a year.
Outdoor gear prices drop right when summer wraps up or during major holiday sales. If you wait for last year's model to go on clearance as newer versions roll out, you get the same performance for a lot less cash.
Remember that the intro window is a deadline, not free money. If you still have a balance left when the 15 months end, the standard interest rate kicks in on what you owe.