Xiaomi Alkaline Batteries comes in AA and AAA. Interesting fact, in China, AA is known as No. 5 and AAA is known as No. 7.

Both sizes come in a pack of ten and each pack retails for CN¥9.90 (S$2). That works out to be only S$0.20 for each battery.

Xiaomi Alkaline Batteries - Box Front
Xiaomi Alkaline Batteries – Box Front