Default [Q] Question about battery heat during wireless charging

Hi, I am using a metrans wireless charger mwt03 for my nexus 5.

During charging the battery temperature is beween 40-44,5 degrees celcius.

Is this too hot for the phone?

Sometimes it will go to 45 degrees where the phone will still charge but state (overheat) as a status (instead of health: good).

Should I look for another wireless charger?