The MS D14 is a spare or replacement AA battery holder for the MB D14 Multi Power Battery Pack for the Nikon D600 camera. It holds six AA sized Alkaline, Ni MH or Lithium batteries.
Price: £37.99 from Wex Photographic
The Nikon MS D11 AA is a dedicated battery holder for the Nikon MB D11 Multi Power Battery Pack. It holds six AA batteries.
The MS D14EN is a spare or replacement Li ion battery holder for the MB D14 battery pack, as used on the Nikon D600 camera. It is only compatible with rechargeable EN EL15 Li ion batteries.
The Nikon MS D12EN is a spare or replacement Lithium ion battery holder designed for use with the Nikon MB D12 Multipower Battery pack, for the D800 and D800E, the MS D12EN Battery Holder allows you to use the EN EL15 battery as the power supply.