110v Mails Stepdown

[matthew413]

Hello,

Long time reader, first time poster

Just wondering if you guys could offer me some advice - I've just got a Yokomo YZ183 charger which can run off either 12v or 110v (US/Japan mains voltage).

Now my 12v supply is one of those little black 10amp things, not man enough to power my Duratrax ICE and the Yokomo at more than 3.5amps each. So, rather than buying another 12v supply, I was thinking of getting a stepdown convertor. Maplin sell one for £15, the specs are Input 230v, Output 110v/120vac 100w.

I'm not sure how to figure out if that will be enough to run the charger - anyone know?

Thanks
Matthew

(argh, can someone change the title to mains, not mails!)