Power and charge module from 18650?

Question

Electronics

Power and charge module from 18650?
Friends, tell me a module for powering a 5 volt headphone amplifier with built-in charging. Preferably from two 18650.
On aliexpress, the devil will break his leg, the descriptions are incomprehensible, it is difficult to find what you need in the search.
Something like a module from a power bank , but it’s not clear what is there at all, but you need stable 5 volts and at least about 1 ampere

Answer 1

Purely as an option for a change.
Charger - www.ebay.com/itm/Terrific-1-Pcs-Replacement-Li-ion...
Boost - www.ebay.com/itm/1PCS-MT3608-Step-Up-Power-Apply-B...
Connect 1-2 batteries in parallel to the charger, and the converter will raise up to 5V.

Answer 2

I use this one.

Answer 3

Will this one fit?