Help with Tamagotchi P's really low battery life

Hey guys! So I bought a used tama off a Tamagotchi trading group on Facebook.

Everything seemed well until I got the "Please replace your battery" screen just 3 days in. With brightness level 3 and sound on for two days and off for one. 

Is this normal? I thought batteries would last for at least 12-15 days. I've tried different brands and the same thing happens. So far, I've tried Eveready and Duracell batteries. 

Any idea what might be happening? 

Thanks

Well, that’s an Easy Fix. Your Probably using Cheap/Zinc Batteries, and your not necessarily suppose to use them. Try Higher Quality/Alkaline, Because the whole Battery Structure and Matereal is way better. That should be the fix, if not I’m pretty sure you’r Tamagotchi has probably been exposed to some light, and that has probably damaged the battery life.