The Nikon D4, 16MP full-frame professional DSLRis capable of shooting at 10 frames per second with full autofocus. In addition to a host of ergonomic improvements, the D4 also sees the expansion of its video capabilities, to the extent that Nikon is describing it as a ‘multi-media DSLR.’
According to the Nikon D4 specifications, the new EN-EL18 battery that is shipped with the Nikon D4 is rated at 2,600 shots, while the older EN-EL4a battery used on D3/D3s/D3x cameras is rated at 4,200 shots – almost half in difference.
EN-EL 18 has 10.8 Volts and 2000 mAh = 21.6 Wh – and the EN-EL 4a has 11.1 Volts and 2500 mAh making it 27.75 Wh, means 28.4 percent higher capacity. However, The particular Lithium battery chemistry they ultimately selected for the EN-EL18 delivers greater actual shooting time than the EN-EL4a
Nikon D4 Battery EN-EL18 Tech spec
Battery / Batteries EN-EL18 Lithium-ion Battery
Battery Life (shots per charge) 2,600 Battery Life (shots per charge) (CIPA)
AC Adapter EH-6b AC Adapter
Requires EP-6 Power Supply Connector
Battery Charger MH-26 Quick Charger
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