I finally added a battery to my @SmartAirFilters QT3 using this brilliant hack from @CC14_CC14. It really just takes a small jeweler's file against the lid to make the edit. (Also remember to file an opening into the resting lip on the actual unit, too)
I made my wiring hole to the right of that little center clasp out of laziness. (It is indeed haphazard, I'll file it flush later)
I bought the same T-CORE battery. Wow is it satisfying to be able to actually close the lid on it. #perfectfit inside that qt3 air purifier compartment. TY for your service in figuring that out
Adding a T-CORE does bump the the QT3 Air Purifier from 1 lb 9.6 oz to 2 lb 1 oz, almost a 30% jump in weight, but it's really nice to not have to worry about a stray battery and to have it all together in one unit.
Needle files / jeweler's files are $2.99 at Harbor Freight if you're in the USA!
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