These replacement battery For Nikon EN-EL14 , EN-EL14a can be charged anytime without any effect on the battery.
The replacement batteries are thoroughly tested by manufacturer and CE certified to match OEM products.
Replacement Batteries:
Nikon EN-EL14
Nikon EN-EL14a
Compatible Models:
Nikon D3100
Nikon D3200
Nikon D3300
Nikon D5100
Nikon D5200
Nikon D5300
Nikon D5500
Nikon Coolpix P7000
Nikon Coolpix P7100
Nikon Coolpix P7700
Nikon Coolpix P7800
Nikon DF