13th, November, 2019.
Although all three lights show battery is charged, after switching on and off a couple of times, the shutter cover stays open.
After charging a couple of times the "E45" error code returns. I decided to check the two batteries that I have with a multi-meter and found that even though the camera shows them to be fully charged, i.e. all three lights glowing steady, the meter showed half a volt and falling to zero.
The remedy for the "E45" fault is.......REPLACE THE BATTERY. Look out Amazon, here I come.
Ron Williams, November 2019