If you use multiple camera batteries, you may like the Watson Duo Charger.
- In my case, I have multiple Fuji X series batteries. The Fuji charger documentation says it can recharge a drained battery in 150 minutes.
- My Watkins Duo Charger usually charges two drained Fuji batteries (drained to just before the blinking red icon (20-25%)) in about 1.5 hours.
Plus, it can mix and match battery plates.
To do this, you swap out plates (which are sold separately). Here, it is charging a Fuji and Canon battery.
There is also a USB port with 2A output, and mine came with a car adapter.