Did I miss where it says what battery technology/chemistry it uses?
If lead-acid based, requires regular care and feeding. (topping off the charge up every 3-4 months.). Letting a lead-acid battery fall below 50% kills it.
Edit: per one of the photos, NiMH battery. If it is easy to replace AA NiMH cells (for example, Eneloop), that is one thing. Otherwise, durability in question.
20% 1 or 2 star ratings at the mothership. And those low ratings are not due to stupid user issues.
And if you “sort by most recent” you’ll see that 9 out of the last 10 reviewers are unhappy
I respect your battery knowledge and diligence for a $17 air pump.
Perhaps you have not been stuck in the dark late evening at a camp site hoping your air mattress will fill. $17 might be a false economy (look it up).
I only go camping once a year, so $17 should be good for a 1 use matress fill.