https://a.co/d/b54v135
$105, from a 3P seller who is an authorized DJI dealer. Arrived sealed in what looked to be an OEM plastic wrap. Cycle indicator shows 1 cycle. Just ordered 2 more. No affiliation with the seller, just a satisfied customer.
FYI,
This is more likely to happen if your batteries are kept charged at 100% for long periods. Better to store them at 80% or lower. I think 65% is optimal, but anything in the 30-80% range is good.
If I charge up my batteries and then don't...