So I had some interesting observations this afternoon using my digital tach on the $99 2754-20 bare tool 3/8" compact impact I received from Toolup back before Christmas and also with my 2454 M12 3/8" impact wrench (I think I sourced that through ACME as -22 kit early last year)
A while back I electronically read the rpm speed on the 2763 and my 2655B impact wrenches and some other tools like the 2653 hex impact driver and Gen 1 M18 Fuel drill even the M12 Fuel drill and Fuel hex screwdriver and maybe the RA drill and impact if I remember right. Anyhow everything all easily measured up to the min stated RPM speed listed on the tag/owners manual etc. and that seemed to show that by using higher AH battery than was available at the time the tool came out it generally boosted peak RPM above the stated rpm mark. This all come about because of thread comment where someone felt a 4.0 increased the power on the 3/8 M12 ratchet. Actually it did get up way over the rated rpm playing around with that measuring peak rpm with 3 different ah batteries.
Anyhow no matter what battery I tried all fully charged 1.5, 4.0, and I have a new 5.0 and a 9.0 in M18, and for the M12 I even opened and charged a new 4.0 to try against a 3.0 XC and my 2.0 and 1.5 compacts...
Neither tool with any of the batteries could match or exceed the minimum rpm number listed on the tool tag. You know at first I questioned if the tach was reading faulty in some way (weak batteries whatever) but I reran the rpm checks on the first 3 of my old impacts 2763/2655 and 2653 and there was max rated rpm matches and noticeable speed increases with the bigger ah batteries.
This is weird I wonder if the other two tools need to break in more
I cant really believe they're faulty in anyway and I got close to stated RPM but still at least 500 under.
Neither one of the 3/8" wrenches has really had any serious workout not like the 1/2 inch wrenches. Both of those are loose as a goose.
