Having recently aquired a d800 I was a bit dissapointed with the life of the EN-EL15 battery. On a morning landscape session (and to be fair to the battery)I was using live view a fair bit, but the battery was soon worryingly low.
If you went on a days shoot you would need a fair few spare batteries something that I need very soon, trouble is you cannot get the EN-EL15 anywhere in the UK for love nor money.
However for those not in the know it appears you can upgrade to the D4 battery (EN-EL18)
To do this however you will need to buy;
1xNikon BL-5 Battery Chamber Cover £24.99
1xNikon EN-EL18 Battery Pack £129.00
1xNikon MB-D12 Battery Grip for D800/800E £379.00
1xNikon MH-26 Battery Charger £299.00
At a total cost of a shocking £831 :0
Seeing as this will be my workhorse body for the next few years and I have never been known for common sense I have ordered one.