Chinese No.4 Batteries?

Question

I recently bought a small appliance in Asia (Made in Taiwan), and the instructions say it requires two "No.4 Batteries." I am having trouble judging by the receptacles whether it accepts Size C or D batteries. Is anybody familiar with the battery sizing chart for China/Taiwan?

Answer 1

Everything I see coming out of Taiwan calling for No.4 batteries crosses to size AAA. Here's an example:

http://www.ecvv.com/offerdetail/I671932.html
http://www.104market.com.tw/vip/2627/item_2627_28228.htm

Usually they refer to them as UM4 but on occasion I see No. 4 as well. Size D would be UM1 and C's are UM2's.