Tim:
So far the battery has been OK. However, it did sit too long uncharged and with the old software had to have a hard reset. This may not affect anyone else but if there's an odd one out there with the original software. Per Ring's instructions:
You might have a HC with the original software. If that is the case you will need to do the following.
The reset button needs to be held in for up to an hour. The way to accomplish this is like in the picture below. You can cut off a toothpick to the length in the picture below and insert it in the reset hole. Then gently press the handheld down until you hear or feel the reset button move. It moves very little about 1/32 of an inch. Please do not press too hard because you can damage the reset button. Then leave the HC charging for an hour then remove the tooth pick (charger still plugged in). The screen should light up and say charging. It will not fully charge from a rest. So after you use it a few minutes you will need to charge it again. After that it should be working as usual. After it is charging and running a long time on a charge, then update the software to prevent this from happening in the future even if the batteries become very depleted.