LanParte VB-150 Sony V-Mount Li-Ion Battery

For the capacity and price, these batteries SEEMED like a good purchase, so my company loaded up (16 in total). In the first year, three of them have completely failed. The company is hard to contact and deal with for technical support. Overall, I regret buying these.

Big battery, looks like it packs alot of juice... and its ok. Diaspponting thing is my URSA mini would turn off before the battery hits 10%. Same thing happened with the aputure light storm COB120t. I was on set, last few shots to wrap, and i could not operate the light above 40-50%. once it got down to the teens. I guess thats undertandable. But this thing is too big and bulky to die on me on those last crucial moments. I don't regret buying the battery, but I cannot buy a second one. Also, get a high amperage charger (2A) otherwise it will take 8+ hours to charge on the puny 1A chargers.

I bought 4 of these batteries for my Blackmagic URSA. They take about 6 hours to charge with my puny charger (pretty good). One thing I've noticed is that as soon as you turn on the camera, the battery drains to about 88%. Then the camera will shut off when the battery reads about 20%. Once the camera shuts off and nothing is draining from the battery, it shoots back up to about 35% (don't be fooled, the camera will still not run for more than a few seconds). That being said, I get a good 1 hour and 50 minutes on average per full battery charge (while not using the camera at all, just letting it sit there while it's on). It might not last quite as long if you're actually using the camera, but should still be at least 90 minutes I'd imagine. Just be careful of the display, and switch batteries once you get to about 22% or so, just to be safe. YOU WON'T FIND A CHEAPER BATTERY WITH THIS MUCH POWER.

I bought 4 of these batteries and LOVED the idea of the display telling me exactly how much battery was left. Got them for my URSA, so I didn't expect them to last too long on a single charge, but was surprised to see that each one lasts about 1 hour and 50 minutes (when I turn the camera on and don't do ANYTHING with the camera). I'd imagine it would last around 90 minutes if I'm switching settings and recording things every now and then. I was disappointed in the battery when the camera finally ran out of juice. The battery display read 20% just before the camera shut off. Then when it lost power, it immediately jumped up to about 35%. Same weirdness when you first turn on the battery. It jumps from 100% to 90% immediately, then goes down progressively from there. If this isn't a big deal to you, then get this battery. It's the cheapest, most powerful battery you'll find anywhere (I spent many days researching this).