"NG 10 Years" competition: RESULTS !!!https://nikongear.net/revival/index.php?topic=11252.0Current status: 90/150 supporters
Can you use this information?https://www.nikonimgsupport.com/eu/BV_article?articleNo=000042103&configured=1&lang=en_GB
At least with the older batteries (15 and 15a) the newer charger is faster, or at least seems so.