The Canon LP-E4 Battery Pack is the power source for the Canon EOS-1D Mark IV DSLR Canon EOS-1D Mark III DSLR and Canon EOS-1Ds Mark III DSLR. The LP-E4 is a rather small battery when compared to the prior 1-Series body's NiCAD power source as seen compared below.
The LP-E4 Li-ION battery delivers a huge number of frames (approaching 2,000) from a single charge. I always have a spare battery on hand, but with this many frames from a single charge, it is harder to justify having the extra battery.
Bringing you this site is my full-time job (typically 60-80 hours per week). Thus, I depend solely on the commissions received from you using the links on this site to make any purchase. I am grateful for your support! - Bryan
Where you buy your gear matters. You expect to get what you ordered and you want to pay a low price for it. The retailers I recommend below are the ones I trust for my own purchases. Get your Canon LP-E4 Battery Pack now from:B&H Photo