For the past couple of days I have been testing the Jag35 battery to see how it holds up powering the Canon 7D, Marshall 5” monitor, and Zoom H4n. For $250, this is a great solution to power your rig.
In an earlier post I tested this battery with just the Marshall monitor and got over 8 hours of life. Compare that to the two hours you get from four AA batteries. Jag35 then came out with a LP-E6 Adapter cable; aka a cable that lets you power your Canon camera with their battery. It also has a auxiliary 2.1mm connector to power another device such as the H4n.
I figured the best way to test is to record nonstop with all devices plugged in. On the first test I had the camera and H4n recording the entire time. I stopped recording every 10 minutes and started again, formatting when needed. The H4n was recording 4 channels with AGC on and NOT in stamina mode. Now this is a pretty intense test but I wanted to see how long it would last with non stop use. On most of my shoots, there is a lot of time spent setting up new scenes, changing angles, changing lenses, etc. I will use this for my next shoot and update how long it lasted.
Here are my results for my boot camp like test:
When powering the camera, monitor and H4n I got 3 hours and 40 minutes of life. When none of lights would light up on the battery, I got about 50 minutes before everything shutdown.
When powering the camera and monitor I got 3 hours and 50 minutes of power.
When powering just the monitor I got over 8 hours of life but may have gotten more. Once all the lights turned off on the battery I stopped the test because I didn’t know it would continue to power.
Some features I’d like to see would be a way to tell when the battery is fully charged. You can push the battery bar button to see how much juice you’d have but it would be nice to have something blink to know it is fully charged. Not a deal breaker though. Also, sometimes the first light goes out rather quickly but doesn’t seem to affect the battery life. Again, not a deal breaker and doesn’t change my decision to buy.
Overall I think this battery is a great buy. When powering just the monitor you will get all day out of it. Powering a camera, audio recorder and monitor will shorten this life but for quick run and gun, especially b-roll, this one battery will come in handy. I usually go through 1-2 sets of double AA batteries with the H4n, and shoot on a third battery with the 7D in a full production day. As for the monitor, well I can’t be changing batteries every two hours so this battery was a must buy for me.
Gear seen in video all from Jag35