EU legislation says you can replace your own Nintendo Switch's battery
Replacement Nintendo Switch Console Battery HAC-003
Amazon.com: NATNO Switch Battery Replacement, HAC-003 Internal Battery Pack Replacement for Nintendo Switch Game Console HAC-001 [3.7V 4310mAh 16Wh] : Video Games
Nintendo Switch Battery Replacement - iFixit Repair Guide
Switch - Battery replacement for your iPhone at RM121 only. - Learn more: http://ow.ly/VGju30mbEsq - Make appointment: https://switch.com.my/service-center/ | Facebook
Battery replacement on Switch : r/NintendoSwitch
Battery replacement on Switch : r/NintendoSwitch
Nintendo Switch Battery Replacement-How To! - YouTube
Nintendo Switch OLED Model Battery Replacement - iFixit Repair Guide