Battery 2K wiring with existing doorbell

I was new to the smart doorbell market, wired in battery 2K and all was working well. Came back that night to the chime buzzing and very hot and choose not working. Do I have to upgrade transformer to 16v 30 VA and add resistor in?

There was not a bridge included in the battery operated 2k, replaced household chime. Last night, Everything was hot and Chime was burned out, the 16V 10 VA transformer was fine. Just running off battery now.

8-24 vac is what they recommend. But yeah that doesn’t sound right or good.

I rewired it with new transformer,
Working now.:+1:t2:

Cool, glad it worked out for you.