Generally, yes—if the camera charges over standard USB, a reputable USB charger should be fine. A charger’s current rating is its maximum available output; the connected device is supposed to draw only what it needs. So a higher-rated USB charger does not automatically force excess current into the camera.

The main caveat is whether the charger follows USB power standards properly or intelligently negotiates output. If it behaves like a normal USB power source, charging the camera should be no different from charging from a PC USB port. One community response also reported successful use with the Anker charger.

Manufacturer warnings are common because they only officially support their own accessories. That doesn’t necessarily mean a quality third-party USB charger is unsafe.

Practical advice: use a good-quality USB cable and a reputable charger, and if you try it the first time, monitor for unusual heat or charging behavior. Avoid unknown or poorly made chargers.