We always keep a spare camera battery when out on long walks in the countryside.
The battery for a D5300 is the EN-EL14(a). It comes with a piece of moulded plastic which clips over one end of the battery to protect the terminals. It doesn't offer much protection for the rest of the battery, and it's easy to lose.
An alternative can be found with a Tic-Tac box. For this particular battery, the right fit can be found with the 29g (1oz) size of mints.
The lid of the c…