I looked through the current threads and did not see much info about this. If I missed it, can someone please point me in that direction and then Vitaliy can close this thread.

Edit: Also, do you need to have matching capacity batteries on these 312 LED lights? And do the two batteries run in a series or in parallel - essentially do they increase the voltage by having two, or simply extend the run time?

Thanks!

Specs

• 2 X AC Socket 110V/220V
• 1 X Type-C 5V,2A
• 4 X USB-A
• 2 X DC 12V,3A
• 2 X D-Tap 14.4V,10A
• 1 X LED Light

A Dual V-Mount Battery Charger + AC Inverter to expand how you use your professional cine Batteries. Do you need to power a Laptop while you're editing in the field, or maybe charge your Drone batteries while you're off-the-grid? Perhaps even power your Live Stream setup in remote locations. The CAME-TV Power Station / Battery Charger is the perfect accessory to expand the use of your v-mount batteries.

With a variety of output options you can Power LED Lighting, Wireless Video transmitters, Monitors, and more. Dual D-Tap outputs, Dual 12V barrel adapters, USB-A, and a Type-C output, the Power Station is a must-have accessory that expands the use of your cine batteries.

https://www.came-tv.com/

https://www.came-tv.com/products/came-tv-mini-99-lightweight-battery-with-2-d-tap-1-usb-5v-outlets

I need some AA and AAA rechargeable batteries for flashes and general appliances for the home. Already have some Eneloops and they are great, but get them on a trip. Here in Brazil I can't get them from Amazon / B&H and such (with import and other taxes, the price increases 100% or more); hence I have to get them from eBay, Aliexpress, Bangood and such.

Getting Eneloops from these sites, AFAIK, is almost guaranteed to get fakes ones. Then, I wonder if some of you had tried some other chinese brands from these sites; do not expect Eneloop performance, but ones with good endurance and being reliable. @Vitaliy_Kiselev and other, do you have any recommendations?

(and no, Ikea ones are not an option too - Ikea don't have stores here).

Thanks in advance.

https://domvarney.com/2018/11/22/powering-the-fuji-x-t3/

https://www.newsshooter.com/2019/04/29/powering-the-fujifilm-x-t3-with-usb-c/

Scientists working on a drone development programme created a “game-changing” methanol-powered fuel system that kept their UAV in the air for 12 hours.

It took them more than two years to get the FY-36 unmanned aerial vehicle to the flying prototype stage, said Zhang Wenyu, general manager of Feye UAV Technology, a Tianjin-based drone manufacturer that collaborated with the Dalian Institute of Chemical Physics, under the Chinese Academy of Sciences, in northeastern Liaoning province.

https://www.scmp.com/news/china/science/article/3042818/chinese-scientists-create-game-changer-methanol-battery-keeps?utm_content=article&utm_medium=Social&utm_source=Facebook&fbclid=IwAR0w7F2dn19d5VQ_-LmYBcSD6scKu8bNI6zHmpSAFO_UW5nz_jFhwSMIqD0#Echobox=1576855471

• Capacity: 70 Wh (5000mAh)
• D-TAP 14.8V MAX. 5A
• USB 5V MAX. 2.1A
• DC1 12V MAX. 3A
• DC2 8V MAX. 3A
• Working temperature: 0℃ to 40℃
• Size: 72 x 183 x 41 mm
• Weight: 623g
• $380 at https://www.soonwell.com/product-page/soonwell-ph70-rechargeable-power-handle

Specs

• Voltage: 7.2V
• Capacity: 2,280mAh
• Energy:16.4Wh
• Compatible Models: A7 III, A7R III, A9
• Free compatible app
• Weight: 82.5g
• Dimensions: 52mmx38.7mmx22.5mm

I use a lot of the BLC12 Batteries. I buy the Panasonic ones; they aren't cheap but they last the longest and don't turn the camera off with no warning.
However, I do buy aftermarket batteries for testing from time to time. They often have very high ratings, and they never work very well.
A few years ago, I bought the DSTE "1600mah" battery. It had about 70 percent of the stock battery's power, and the stock battery is 1200 mah. So that's 840mah, or about half the advertised capacity.
A few weeks ago, I purchased the 1700 mah version at this link:
https://www.amazon.com/dp/B00MEAMBQU
It weighs 55 gm as opposed to the stock 50gm. Previous clones weighed 46 and 48 gm.
Now before you get excited, the extra weight is probably ballast, since you can't squeeze more cells into a battery, as a general rule.
However, after extensive testing, this battery is equal to--not better--but equal to stock. The only difference is that the shutdown curve is a bit steeper.
So it isn't "1700" mah, but it is basically a stock battery.
This was quite a shock, but I repeated the tests several times. In one test, I simply turn on the camera and record video until the battery croaks, and measure the time. Both the stock battery and the DSTE run the G7 for two hours of video, sometimes a few minutes more, sometimes a few minutes less. So, finally, an inexpensive option. At least for this batch. Also, see my post on the cheap external battery that will run your camera all day.

I purchased this one.

https://www.amazon.com/gp/product/B073XYYYWR

There's another model that has two USB inputs, so you could use two power banks or use one and draw more amps.

I was skeptical, and the packaging made me even more so, cardboard & crinkly shrinkly, but I plugged it into my cheapest 5200mah power bank and measured the voltage. 8.8 volts, which is just about right (I've gone as high as 9.2, but prefer not to). Notably, the needle on my trusty voltmeter did not wiggle. Also noteworthy, it didn't seem to need the recommended 3 amp draw. It comes with a 3 amp wall wart if you just want to plug the camera into the mains for power.

It comes with a bog standard dummy battery. The step up converter is tiny, not much thicker than the cable. Plugged in the camera (Panasonic G7) and waited. The 5200mah power bank ran the camera for 156 minutes, or two and one half hours. Not bad--you are going to lose some power in the conversion so don't skimp on the power bank. I'll do some tests later with my RAV 20,000mah bank.

Camera ran cooler than expected.

So there you have it, easy, lightweight power from USB. I had been using 9 volt packs with stacks of Panasonic 18650 cells (runs forever....). But this is really easy.

You can buy adapters for most cameras, and considering the fact that it comes with a dummy battery, the price is cheap. Will it burn out? Interesting question.

[Added formatting and photo, VK]

Photo

Manufacturer specs

• 91Wh capacity
• 620g
• 25.4mm depth
• 12V cutoff voltage

Thermal behavior

Start

Depleted battery

Specifications

• Noname brand
• Made in China around one year ago
• 2200 mAh stated

Sony NP compatible battery, UK Lab, discharge from fully charged state, 8W constant load

8W load is typical for Panasonic GH5 4K recording mode as well as Canon DSLR video recording modes.

Photo

Manufacturer specs

Will be added later.

Sony NP compatible battery, UK Lab, discharge from fully charged state, 50W constant load

Note that 50W load is little big for such batteries, lights usually draw maximum 30W from them.

• Charges Four Batteries Simultaneously
• Dynamic Power Management
• Recharges Batteries in 2.5 Hours
• 100-240 VAC Power for Worldwide Use
• 12 VDC Power for Charging in a Vehicle

https://www.bhphotovideo.com/c/product/1357280-REG/dolgin_engineering_tc40_pan_blf19_battery_charger_for_panasonic.html

I am thinking of routing power from cga-d54s from camera contacts and feeding to hyperdeck.

Any solution for boosting 7.2v to 12v? Hopefully Max. Efficiency.

One off eBay is xl6009-dc-dc - not sure how good it is.

are there any chinese V Mount options that are affordable and reliable? Would love to start building a set. I currently own 8 chinese NPF 970, would getting a v mount to NPF6 adapter also be a good solution, so I just stock up my NPFs? I am looking to power my LED strip lights with them.

Price: $23.35 with free shipping

http://www.ebay.com/itm/DMW-AC8-DMW-DCC8-DC-Coupler-AC-Power-Adapter-for-Panasonic-Lumix-DMC-GH2-GH2H-/220950905405

In a footprint not much larger than 2 batteries, Atomos Power Station delivers power for up to 5 devices using our patent pending Continuous Power dual battery system, allowing users to hot swap batteries on the fly without interrupting power to their devices.

“This is Power to the People, solving power and battery for everyone.” said Jeromy Young, CEO and Founder of Atomos. “The Power Station is the Anton Bauer for the masses, solving the biggest hassle on set, running out of power; we have also added one of the fastest dual battery chargers in the industry all in one device.”

At its core, Power Station consists of 2 batteries mounted side by side that operate together using a continuous circular power system. When one battery gets low it can be removed and charged while the system switches across to the second battery uninterrupted. This patented design by Atomos is used to power up to 3 DC streams (for cameras, monitors, recorders or lighting) as well as 2 USB products such as smartphones or tablets. With a DC input as well, it doubles as a super-fast charger for your batteries – up to 3 times the rate of conventional chargers.

Connections and features at a glance:

• 2 DC out and included splitter cable to give connection for up to 3 DC devices.
• 2 USB terminals to power 1A and 2A USB devices for fast charging of USB cameras or to power any USB device.
• DC input with fast charging capability to charge the connected batteries and provide continual AC power for connected devices.
• Independent left and right LED front display to give a quick 5 step visual guide on the power remaining for each battery from 100% down to 10%.
• Dummy batteries are available to power popular cameras including Sony A7s, Sony FS Series, Panasonic GH4, Nikon D810 and Canon 5DMKIII.
• Total power capability up to 5A (DC plus USB), with maximum 3A for USB connections.

If you are using an external battery solution successfully, what do you have?