Bought a Mariko switch with SX core installed (modchip version). Been working great except for the battery which wouldn't last for more than 2 hours even while playing a lightweight game like golf story. So I definitely need to repalce the battery however since I'm a noob I definitely need to know if it's a simple process of just unplugging the old battery and replacing it with a new one? or is the modchip soldered into the battery somehow?