so my friend bought a drumset from America and had it shipped all the way here to Amman, Jordan. Of course im going to need a convertor for the voltage difference between the 2 countries. However I'm confused as the battery for the drumset has 2 different stickers with 2 different voltage requirements on it (See attached photos). One sticker says input 100-240V and the other says 100V. However im also confused since isnt the defualt electrical output in America already 120V? Higher than the requirement?
Furthermore i have a 220V to 110V convertor not 100V, would that 10V difference make any difference? Thanks!