Hi, try this, I'm satisfied
https://www.nitecorestore.com/NITECORE-FX1-Charger-for-Fujifilm-Camera-Battery-p/chg-nite-fx1.htm
I use it with the car lighter socket - works great, about 2h from weak to full, with dual slot. Sometimes I also connect it to the power bank.
It's good to have a usb extension cable.