Wire a ring doorbell so the batter does not drain

I have a 2nd generation ring doorbell that is hardwired. It has worked for quite some time. I recently made some changes to my Ring setup, which records a lot more video. From my conversation with tech support, I realized the trickle charge supplied is insufficient to keep it charged. I have two questions. Can I increase the power coming from the transformer? I was considering hooking it up to a standard USB charger. The other end would still feed the terminals on the back. Can I plug in the USB to charge the battery simultaneously with power from the transformer? In both cases I want it wired with the posts on the back so it will continue to ring my built-in doorbell. Thanks, Randy