Big beast. At 23000mAh it couldn't be a dainty thing but I love it. I use it to power my Nikon camera. Night shooting eats batteries. Nothing sucks more than your battery running out of juice during a long exposure. I enjoy night photography I think more than I enjoy day photography. Night photography presents obstacles that you don't consider during the sun drenched hours.
Once you dip your toes into night photography, the thirst for capturing the elusive night light consumes you. This quest has rich rewards but it has its frustrations - mainly the hunger your camera has for power. The camera basically eats the batteries and spits them out faster than you can say howdy. This is primarily due to the long exposures the poor nocturnal light requires and the fact that live view is the handiest way to set the ISO, f stop, exposure and also frame the shot. I have 5 batteries for my camera that are fully charged and ready for a night shoot. They last several hours but it stinks when you are on a roll and your camera doesn't fire because it sucked the power dry. Time lapse photography intensifies this hunger for power. Add cold night temperatures to this mix and the battery dies even faster.
I have been on hunt for an alternative way to feed my camera during its hungriest times. Batteries with higher mAh didn't cut it. Using A/C power isn't feasible unless I am shooting from home and can stretch out an extension cord.
Enter this baby. It's a beast, roughly the size of a tablet. I place this in a pouch and hang it on my tripod. The lovely purple Crown Royal pouch is just the right size for the job.
I use a Lanparte EL15P-01 E15 Battery Adapter (Black)
that I connect to the power bank. It is critical to set the power bank at the proper voltage or you will damage the camera. Make that fry your camera. This has a variable DC output. I set the power bank to 9 Volts which works for my Nikon. I always verify the voltage on the power bank's LED before I plug it in the camera. Last week I shot close to 300 shots in raw. The camera was never shut off in the three solid hours of shooting long exposures and constant live view and it was a very cold night. The power bank had a 90% charge at the onset of shooting and had 73% at the end. The added perk of this thing is that it can charge my phone while feeding my camera at the same time. It's a relief not to worry about swapping batteries. I can fully focus on the capturing the perfect light.
Oh yeah, I LOVE this thing.