I simply cannot recommend a Pinecil + compatible 20A battery pack enough. Not being tied to a socket is amazing and the device is good to go in literally seconds!
Dunno, I had a TS80P, and bought a compatible Xiaomi powerbank and had a lot of issues. What sort of worked for me, is they make adapters for Makita batteries that have Weller connectors, those have a lot of juice and are far less fussy.