Looks like quality check control or packing is done by hand and will be recorded and dated.
Viper Seems to have a decent quality check control before the unit goes out to the customers or vendors.
The second image is the Warning label included in all recently shipped out ESCs.
As you can see, there seems to be a confusion among people that are either illiterate or are just ignorant regarding the Manual.
Once they see 4 Cell lipo they seem to assume the ESC is able to handle the bigger 1/8 scale Buggy motors.
WHICH IS NOT THE CASE THE ESC is FOR 540 1/10 scale sized motors only !!!
Hence they changed the Lipo Capability to 3S, which renders the ESC useless for 1/8th scale usage.
As we know most 10th scale racing only uses 2S and some bashing uses 3S, so it is perfectly fine for us =D.