I asked Nikon support and the reply is hillarious:
Hi xxx,
Thank you for contacting Nikon, Regarding your earlier model Coolpix 4300 the correct battery to use would be the EN-EL1 model. I understand every time you remove the battery your loose your settings and date. Please try the following;
1. With camera powered off remove battery and memory card for about 30 seconds
2.ensure you are using an approved card Answer Title: Approved CF Cards - Coolpix 4300 Answer Link:
https://support.nikonusa.com/app/ans...tail/a_id/5094 3. Reinsert just the battery and power the camera on
4. Hit the menu button and in the set up menu (icon of the wrench) select "Reset all"
5. Ensure camera in the full auto and test the camera with and with and out a card if possible
If you have any further questions or concerns, please feel free to call back at 1-800-NIKON-US.
Have a great day,
Miriam
Nikon Customer Support
https://support.nikonusa.com/app/acc.../i_id/16482778
...
Not a word about the little battery type/voltage. Nothing. Useless "support"...