Weed wacker differences

[Eric 1 0]

Can someone tell me what the differences between the Milwaukee string trimmer 2825 20 vs the 2825 21 I do not see a difference anywhere thank you

[Biggie 372]

With all Milwaukee tools the first 4 numbers indicate the tool model and then the last 2 numbers indicate if its a bare tool or if it comes in a kit with batteries and how many batteries.

 

example:

2825-20 bare tool

2825-21 kit with tool and one battery

2825-22 kit with tool and two batteries( I couldn't tell you if this is even offered for the sting trimmer)