Dave

Yes, that's the battery. But, I'm not sure if it's low on voltage or not. I guess it's best to just scrap it. I'd hate to have it just go "dead" at 400'.

Re. "storing" batteries. That irks me a little. I read that you'd better drain each battery to "exactly 49.2%" or you'll ruin it in storage. When they're shipped to me, what is their %? Does someone build an electronic type battery charger for drone (& whatever else uses these batteries) that will automatically draw a number of these (3-5?) batteries down to 49.2% (or whatever that "magic" number is) and maintain them there for 3-5 months, aka "winter" here. A day before flights are to resume, have the ability to kick the batteries back up to 99%. Seems if that device cost $100 or so, it would be well worth it. Is there such a device? If not, why doesn't someone invent it? I'll buy one.

Personally, I did not attend my drone from late November to late March. I thought it was doing OK parked in it's oversize waterproof case sitting in the corner. Apparently not. That 3rd battery was apparently not hibernating correctly.