Perhaps you already have the answer but roughly:
- In Bluetooth settings you can enable an item in your menubar -- do that
- Click on that while holding down alt -- then scroll down to a connected device -- you should see a lot more details including single level. Roughly speaking:
- anything bigger than -50 is pretty great
- -50 to -75 is serviceable
- less than -75 is pretty miserable (start to see disconnects)
- unusable at -90
- Note that the values tend to fluctuate quite a bit so you may need to read it a few times to get a sense
On my new Fenvi card, I still had poor Bluetooth power problems but when I turned off wifi (I'm hard wired) it worked much, much better. I'm honestly very confused about wifi and things like handoff and continuity. I've heard that you have to enable wifi for those features (which never made sense to me -- how would your computer know if it's a wifi connection or a wired connection?) but regardless -- after wifi off the Bluetooth worked great AND, as far as I can tell, all of my continuity features continued to work (but I didn't test it very thoroughly)
Fun Fact -- I'm sort of ' in the business' with regards to RF things -- the units the mac shows are in dBm which is dB relative to 1mw of power
dBm |
Power (W) |
-60 |
1 × 10^-9 |
-70 |
1 × 10^-10 |
-80 |
1 × 10^-11 |
-90 |
1 × 10^-12 |
The point of the fine table above is that when your mouse is working at -60dBm (which it will work just fine with) you are dealing with one Billionth of a watt of power -- that is not a lot of power!