There's this small street in Central where they have small stall doing watch repair, key duplication, shoe shining, etc. I've been bringing my watch to this watch stall for battery changes. They charge reasonably. The old Chinese couple can transact in English and they offer discounts if you buy more than one battery. They don't give you crap batteries and told me that one of my batteries "not good" and said "should use this brand."
This is really just a random post. I just want to say that I love this couple as they remind me of my hard working parents when they were still running their small business.