power bank for the z9?

[John Navitsky]

and i’m pretty fond of the ugreen 100 and 200w multichargers to charge the packs

https://www.amazon.com/gp/product/B091Z6JNX4

https://www.amazon.com/gp/product/B09MGRNYHH

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[Andrew Lamberson]

So, you can run the camera without a battery in it?

The primary use is to charge the battery via USB charging. You could rig it up on a dummy battery and it would run the camera. I am exploring that option for my camera trap, but so far it is doing a good job keeping the battery charged.

 

[ajrmd]

If I am not mistaken it is similar to the 737, which works with the Z8/9

 

[ssheipel]

Maybe a real engineer will show up, but in terms of # of times over you can charge your Z9 battery (or simply power the Z9 via cable) I believe it would be the watt hours. So roughly,

Nitecore = 20,000mAh * 3.85V = 77Wh
Z9 battery = 10.8 V * 3300mAh = 36Wh

77/36 = 2.1x, not accounting for the potential improvement in battery performance by being heated in an insulated pouch v.s. freezing in the camera body.

Thanks.

 

[ssheipel]

If you had a long cable, could you run the Z9 from a power block, while keeping the power block under your parka so that it would stay warmer? Or put the block in a pocket with a chemical handwarmer?

You can charge the EN EL 18d batteries using the Z9 charger block attached to a PD power brick. I’ve used the Anker block I mentioned above. That would allow you to not bring the Z9 itself into the warmth.

Thanks. I'll keep spare batteries and PBs in my jacket and am not too worried about the life of the battery in the camera during the day of shooting, but if a problem I'll simply hand the PB from the tripod plugged into the camera. Another option others have used is to attach a chemical hand warming pack to the camera where the battery resides. And thanks for confirming that the brick takes the USB connection from a PB; don't want to be bringing the camera (or lenses) into the heated dining tent where the inverter will be.

 

[ssheipel]

I have the Anker PowerCore+ 26800mAh PD 45W and use in my camera trap with the Z6II to keep the battery in the camera charged. It's been used for up to 4 nights and it is still 80 % and the camera battery is 100%. It's been down in the teens a few nights I had it out.

I also use it up at the Sax-Zim Bog to recharge my Sony A7r V and I keep the battery in my jacket to keep it warm.

Thank you, sir!

 

[ssheipel]

So, you can run the camera without a battery in it?

As others have answered, no. You can run the camera (with battery) with the PB plugged into it but ultimately the camera is running off of its battery and the PB is topping up the battery....

 

[ssheipel]

fwiw, optimal battery will be one that can provide 20v @ 3a via pd
View attachment 76527

I knew some engineering would show up! Thanks.

 

[ssheipel]

If it's any consolation, I was in Northern Minnesota last winter and the temps hit -35F throughout the week. The Z9 battery lasted all day long without doing anything. I have a spare battery anyway, but I just simply charged the battery I used each night and rotated them throughout the week I was there. No issues. Not sure what temps you're expecting, but the larger battery performs very well in cold temps. I also didn't take a lot of video either though, or use live view much.

Unlikely to get that cold (although utterly possible of course; Pond Inlet was -36c yesterday ), and yes I've shot at the temp for the day on my Z9 and used just one battery, so not overly concerned with the performance of the battery while shooting; just about getting the battery charged and keeping them charged when not in use (in the absence of heat for the majority of the 24 hour days). And definitely I need to wean myself off chimping too much in cold weather generally

 

[ssheipel]

note chargers will vary in their abilities. for example this one, which is a nitecore very similar to the one i linked can “only” do 2.25a at 20v, so it will take a bit longer to charge vs best possible speed (although overall has good capabilities)

this is the previous version of this model https://www.nitecorestore.com/Nitecore-NB10000-Gen-2-Power-Bank-p/bat-nite-nb10000.htm

View attachment 76528

That's the PB I'm considering. Thanks.

 

[ssheipel]

right now i’m pretty fond of this one(and it’s slightly larger big brother):

Amazon.com

it supports the widest range of output protocols and voltages of the packs i have:

View attachment 76529

View attachment 76530

and it charges fast:

View attachment 76531

and it had more than one usb-c port which is very nice and the display is convenient

That's a great choice, especially for my non cold seasons, no power camping trips!

 

[ssheipel]

The primary use is to charge the battery via USB charging. You could rig it up on a dummy battery and it would run the camera. I am exploring that option for my camera trap, but so far it is doing a good job keeping the battery charged.

Thanks. Plan is not to use the PB to 'run' the camera but to have 'power' available and to back the battery up while shooting (if that scenario becomes needed).

 

[ssheipel]

depending on how you plan to use it, nitecore has some packs that supposedly will self heat to aid in charging (the pack) at low temperatures https://www.nitecorestore.com/Summit-20000-Power-Bank-p/bat-nite-summit20000.htm

Sorry, THIS is the one I'm considering. I think They're all melding together in my head now LOL

 

[John Navitsky]

Sorry, THIS is the one I'm considering. I think They're all melding together in my head now LOL

for cold the summit is probably a better choice. i use the nitecore models when i’m more concerned about space/weight.

my primary gripe with them is i wish they had two usb-c ports, a common issue on power banks

 

[John Navitsky]

Thanks. Plan is not to use the PB to 'run' the camera but to have 'power' available and to back the battery up while shooting (if that scenario becomes needed).

fwiw, charging the battery in the external charger appears to “only” pull 9v @3a

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[KurtH]

I'm a bit late to the party. I've been using the GoalZero Sherpa 100PD for several years. Works well out in the not-harsh field for all my devices (except the laptop), fits nicely in a backpack or back pocket. Used it with my Z6 and Z7II (En-EL15b and c) but haven't tried it on the Z9 car battery yet.

On your original question "Wondering what parameter I need to consider re whether it will be adequate to charge a Z9 battery.", it looks like John Navitski had your answer.

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[John Navitsky]

I'm a bit late to the party. I've been using the GoalZero Sherpa 100PD for several years. Works well out in the not-harsh field for all my devices (except the laptop), fits nicely in a backpack or back pocket. Used it with my Z6 and Z7II (En-EL15b and c) but haven't tried it on the Z9 car battery yet.

On your original question "Wondering what parameter I need to consider re whether it will be adequate to charge a Z9 battery.", it looks like John Navitski had your answer.

fwiw, i have the sherpa 100pd as well and in general it works well and i think an improvement over their previous offerings. here’s the output modes it supports. my primary grip is the single usb-c port

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[cchuck]

I don't even know the question to ask, really.

Looking at powerbanks that perform in the cold looking ahead to my arctic trip in April. Have found one that heats itself (using very little power) and will retain 70% charge at -20C over 24 hours.

Wondering what parameter I need to consider re whether it will be adequate to charge a Z9 battery. The only technical information I see that might be relevant is this:

Capacity

20,000mAh 3.85V

Assuming that answers the question, one way or the other? In product description is says only it will charge a cell phone several times.

Thanks.

Steven, I use the one recommended by Nikon. I can send you the Amazon link if you can buy from them. It's listed at $79 USD. It's the most powerful powerbank allowed in cabin luggage on US Airlines and most others.

Anker PowerCore+ 26800mAh PD 45W with 60W PD Charger, Power Delivery Portable Charger Bundle for USB C MacBook Air/Pro/Dell XPS, iPad Pro, iPhone 14/13/12 Series, and More​

 

[BillW]

Thanks. I'll keep spare batteries and PBs in my jacket and am not too worried about the life of the battery in the camera during the day of shooting, but if a problem I'll simply hand the PB from the tripod plugged into the camera. Another option others have used is to attach a chemical hand warming pack to the camera where the battery resides. And thanks for confirming that the brick takes the USB connection from a PB; don't want to be bringing the camera (or lenses) into the heated dining tent where the inverter will be.

One other thought. You might want to test the cable you will use to connect the brick to the charger block. I believe some USB-C cables are power only and some are power and data; either of which might be fine for charging. Not sure if there is any risk that some cables are data only and would not work for charging. I’ve used various cables (Anker, Belkin and Apple) that work fine for charging and data. But I do test them with any new set-up.

 

[ssheipel]

Steven, I use the one recommended by Nikon. I can send you the Amazon link if you can buy from them. It's listed at $79 USD. It's the most powerful powerbank allowed in cabin luggage on US Airlines and most others.

Anker PowerCore+ 26800mAh PD 45W with 60W PD Charger, Power Delivery Portable Charger Bundle for USB C MacBook Air/Pro/Dell XPS, iPad Pro, iPhone 14/13/12 Series, and More​

Thanks. I'll compare these specs against the PBs that are designed for deep cold.

 

[ssheipel]

One other thought. You might want to test the cable you will use to connect the brick to the charger block. I believe some USB-C cables are power only and some are power and data; either of which might be fine for charging. Not sure if there is any risk that some cables are data only and would not work for charging. I’ve used various cables (Anker, Belkin and Apple) that work fine for charging and data. But I do test them with any new set-up.

Definitely. Plan is to use Nikon 'power' USB as supplied; I have at least two -- USB cables apparently easily succumb to freezing weather, I've been warned.