I would take a look here Chargers and Charging - #8 by Pdwhite, some people had similar questions.
This is the one I’ve been using and its been solid HTRC HT700 DUO AC/DC 1 8s Lion/LiPo Battery Charger 350W * 2 20A * 2 Dual Port 4.3 "Touch Screen Verticale Balance Charger Scaricatore|lipo battery|balance chargercharger discharger - AliExpress.
There are other options so feel free to ask question if you’re not sure about something.