Featuring a Sunpak 622 with the zoom head.
The 7.2 volt 4500mAh battery pack is home made and interchangeable with my other flashes of several brands and can also power my led worklights. It's infuriating to have a full pack and a device that ran out of juice but needs a battery of another type, like AA's or D's. That's when customization pays off. I can get about 200 full power blasts out of my Sunpak with this battery and usually I carry two, and sometimes smaller 2000mAh packs as backups.
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