Switronix PowerBase 70 Battery Pack for Canon EOS 5D Mk II and 7D DSLRs

Switronix PowerBase 70: Picture 1 thumbnail Switronix PowerBase 70: Picture 2 thumbnail Switronix PowerBase 70: Picture 3 thumbnail Switronix PowerBase 70: Picture 4 thumbnail Switronix PowerBase 70: Picture 5 thumbnail Switronix PowerBase 70: Picture 6 thumbnail
Top Rated Gear

Our Price

Buy more and save
Quantity Discount

The quantity discount will be reflected in your shopping cart

Ways To Save

More Buying Options

Switronix PowerBase 70: Picture 1 regular $299.00

About Switronix PowerBase 70

The PowerBase 70 Battery Pack from Switronix contains a 70 Wh, 14.8V Lithium-ion battery designed to extend HD movie recording time for the Canon EOS 5D Mark II and 7D digital cameras. The PowerBase 70 delivers six times more power than the original battery supplied with the camera. It is also intended to streamline your High Definition (HD) movie recording: the PowerBase 70 mounts under the camera and doubles as a grip or can be attached to an HDSLR support via its 1/4"-20 release plate or V-Mt mount.

Wired as a 14.8v battery pack, it can provide extended power for up to two additional 12VDC devices such as lights, monitors or HD converters as well as other devices requiring lower voltage (an optional XP power regulation cable is needed). The pack is also furnished with 1/4"-20 threads on either side to mount accessories.

Summary of Customer Reviews

Customers most agreed on the following attributes:
Reviewer Profile:
Business owner (3)

Switronix PowerBase 70 Features

  • The PowerBase 70 is a 70 Wh, 14.8v Lithium-ion battery pack which provides up to six times the runtime of the Canon batteries included when you buy the camera
  • The pack can mount under the camera, doubling as a grip or can be attached to an HDSLR support via its 1/4"-20 release plate or V-Mt mount
  • Wired as a 14.8v pack it can provide extended power to up to two additional 12VDC devices as well as other devices requiring low voltage through an additional XP power regulation cable (not included)
  • The unit attaches to the camera with the supplied quick release plate to make attaching and detaching the Powerbase 70 from the DSLR rig easy
  • The PowerBase 70 is also furnished with 1/4"-20 threads on either side to mount production accessories to
  • The PowerBase 70 does NOT include a charger. It is a separate purchase. The part number for the charger is PB70C
  • Two PowerTap outputs power lights, monitors, HD converters, hard drives, etc
  • A four LED indicator gauge allows you to check charge capacity at any time

Switronix PowerBase 70 Specifications

70 Wh, 4.8Ah
Output Voltage
6.25" x 1.8" x 3.3" / 15.9 x 4.6 x 8.4 cm
1.4 lb / 635 g
Mfr #

Switronix PowerBase 70 Reviews

Review Snapshot®


(based on 7 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 7 customers


Long lasting power


from Providence RI  -  Business Owner

This is a live saver for powering the blackmagic cinema camera


Lots of Options for a Rig


from Louisville, KY  -  Business Owner

Just got this in for use with my Blackmagic Production Camera 4k today. I haven't used it with the camera yet, so I can't say anything about it's battery life, but when comparing power solutions for my Blackmagic I had some difficulty finding all the information I wanted, so I felt compelled to share with you what I know here now that I have the battery in hand. The battery itself is a V-mount brick. The opposite face of the V-mount has a small quick-release plate with a 1/4" screw, so that you can mount the plate to your Blackmagic and easily remove and attach the battery as needed. You can also use this plate to attach any number of accessories, including another battery if desired. In addition to the face with the 1/4" screw, both sides and the V-mount back also contain 1/4" threads, so you've got a lot of options on how to attach this to your rig. The contact block connects to the bottom of the battery and should never have to be detached so long as you're using the same camera. The contact block has the cable that connects to your Blackmagic, and it is, as other have remarked, pretty darn short. I can't say much since I haven't connected it yet, but it's definitely shorter than a foot and I expect to have my rigging abilities limited by this. Fortunately, you can buy extension cables if it's THAT big of a problem. And of course, there's a power indicator on the side. Push a button and you've got 4 LED indicators to tell you how much charge you have. The only problem I've encountered thus far is with the plastic molding of the battery. It took a lot of force to get the charger cable plugged into the battery, and I definitely chipped parts of the plastic off doing so. It simply did not fit without using a frightening amount of strength and hearing a frightening amount of snapping, and it doesn't get any easier when pulling it out or putting it back in. Weird and annoying, sure, but a small complaint in light of all the other pros of this battery.


Nice Battery Solution for BMCC


from Seattle, WA

The Switronix is a pretty reasonably priced battery solution for the Blackmagic Cinema Camera. You essentially get a V-Mount, but with bonus option of being able to mount directly under your camera for flying with a smaller rig, handheld, or on a jib. I tend to mostly use this with a v-mount plate and run out to the camera, and I discovered another bonus of the quick release plate is that I could mount my H4N recorder directly to it for good run and gun audio on the fly, as well as additional counterweight when handheld. Really the only downside to this battery is capacity, doesn't last quite as long as standard v-mounts. But its slightly smaller and more lightweight, and offers more versatility so it seems to even out to me.

(1 of 1 customers found this review helpful)


Fantastic addition to the BMCC.


from Los Angeles, CA  -  Professional Artist

I have only used the battery pack a couple of times and it's great so far. I recorded a 2.5hr interview and by the end of it I still had over half the battery capacity left. Just awesome. The only issue I have is the mount which is plastic and has a little play in it. Unfortunately, if you use the battery pack as a handle, the camera wobbles slightly on it. I figure I can customize with a little piece of electrical tape to stop the wobble.


It's about time


from Sylmar, California  -  Film Professional

This is a must have for the BMCC user. The extra shooting time allows ytou to capture those magic moments with the worry of running ou t of battery power. It also allows for intergration of many support devices...i.e.; monitor, audio, etc. The second most important piece of equipment a must for all levels of pruduction.


Like it. Long Battery Life


from MidSouth  -  Pro Photographer

I wish it charged faster, but I am using the little P-tap charger.


t2i extended life battery


from St Louis  -  Pro Photographer

It works great, but is as big as a barge. There are no directions or manual and beware, the wall recharger is sold seporately!


Questions & Answers Powered by TurnTo®

Questions about this item:

Shopper  How long is the cable? Is the the 24 inch version?
Andrew R  Unfortunately the manufacturer doesn't specify but I believe the cable is approximately 12".
Share this item:
Adorama.com is top rated for customer serviceHACKER SAFE certified sites prevent over 99.9% of hacker crime.