ozak get a step down transformer only if you have alot 110V stuffs,
otherwise why not buy a local makita 12V charger its much safer.

lol i'll tell you a story about a a friend of mine,
there was a time he bought a pair of walkie talkie (110V punya)
that time baru beli never once miss using the step down.
after pakai sampai bored, he stored it for a few years.
one day while while cleaning his store room he stumble upon the walkie talkie
n siok siok he terus take n charge it. tiba2 keluar asap ... terlupa step down.