Gameboy Advance SP won’t charge

Hello! I bought a gameboy off eBay recently. Of course the listing said they weren’t sure if it worked but their brother claimed it turned on. I received it with no battery. After buying a battery, it won’t charge. The light indicator won’t turn on at all. I can’t get the gameboy to power on at all so far either. I could use some help with figuring out the issue and how to fix it. Thank you for your time and help!