Ring Doorbell 2 Transformer requirements

This would apply to both the RVD and RVD2 from my understanding.

I would use the Ring wirebound resister and a transformer rated for 8-24V AV (40V maximum) at 50/60Hz.

Does the 40V max mean 40 AMP max? as the doorbell supports 8-24v?

Would a 16v 10va charge slower than the Ring Pro 16v 30va or a 24v 20va?

What combination is the best for charging in a high use area?

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Did you ever find out what transformer is required for the Ring Doorbell 2? I can’t work out the amps.