Hi Marianne Thompson1,
Thank you for reaching Microsoft Community. We appreciate for sharing your concern to us.
From a Microsoft perspective, we highly advise against using any power source to charge the battery other than a genuine Microsoft or Microsoft-licensed one, one that either came with your Surface or was bought separately.
If you’re interested in purchasing a power supply for your Surface, see Power and dock - Microsoft Store.
You may find this article helpful Surface power supplies and charging requirements - Microsoft Support.
Kind regards,
Lavenia