Baxxtar EN-EL15c

• Variants

  According to Nikon, the batteries in the EN-EL15 series (EN-EL15, 15a, 15b, 15c) are largely compatible with one another; however, an older battery generation in a camera designed for newer generations allows fewer shots per charge.

  Source: Nikon Support: compatibility of EN-EL15 series lithium-ion batteries (article 000044904)
• Charging

  According to Nikon, only the EN-EL15b and EN-EL15c can be charged in the camera via USB (Z series cameras with the EH-7P or EH-8P and cable UC-E25, as well as the D780), but not the EN-EL15 and EN-EL15a.

  Sources: Nikon Support: compatibility of batteries, chargers and AC adapters with DSLRs and Z series cameras (article 000044784) · Nikon Support: compatibility of EN-EL15 series lithium-ion batteries (article 000044904)
• Restriction

  According to the Nikon compatibility table, the D600, D800/D800E, D7000 and D7100 use the EN-EL15, EN-EL15a and EN-EL15b batteries – the EN-EL15c is not listed for these cameras.

  Sources: Nikon Support: compatibility of batteries, chargers and AC adapters with DSLRs and Z series cameras (article 000044784) · Nikon Support: compatibility of EN-EL15 series lithium-ion batteries (article 000044904)

Information from the camera manufacturers on their original batteries and cameras, with sources. Baxxtar is an independent brand and is not affiliated with the camera manufacturers.