+1 on the 150.
Had mine for 18 months now.
Pulled it out to check it’s cgarge after it’s sat inside my truck for 6 months...and it was still sitting at just at 100%. Topped it off, as it only measures in 25% increments...but it took very little charge so it was essentially unaffected by sufficient g idle after all that time!
Not only impressive, but also reassuring to know that you don’t have to pull it out and tend it. The thing just stays ready.
Side note:
Soooo much power in this thing.
When camping, I’ve plugged high power 9.6A (2.4x4) USB charger in its 12V to charge two phones and an iPad simultaneously in the tent, plus a USB light...and it is entirely unphased. Also have plugged in 350Watt inverter for use away from my vehicle’s larger inverter and it powers it without even trying.
Sort of like adding a third back-up battery to my dual battery system for worst-case start.