Hi, sorry to hear that your Surface tablet is having trouble charging and holding a charge. I understand how inconvenient this can be, and I’ll do my best to help you resolve the issue.
First, I recommend adjusting your power settings. Try enabling Battery Saver mode, reducing the screen brightness, and turning off any unused background applications to help conserve battery life. Also ensure that you're using a compatible charger specifically designed for your Surface device. An incompatible or faulty charger can negatively affect charging performance and may even damage the battery.
Additionally, I suggest checking your battery health using the Surface app, which you can download from the Microsoft Store. Once installed, open the app and navigate to Help & Support > Check for updates. This can help identify any battery-related issues or detect pending firmware updates that might impact your device’s performance.
I hope this helps.
Kind Regards,
John Oli