It seems the Baseus 30000mah 65w power bank is not as advertised. It doesn't seem to be 30000mah@3.8v=114wh capacity, they are also claiming 18000mah@3.8v=68.4wh rated capacity. So under actual use it would be less than 68.4wh due to conversion losses going to higher voltages and less if running in ...

I just read some information online that stated the actual capacity of a power bank can vary as much as 40% from what is advertised as. That is considerably more than I expected due to conversion losses. It's obvious to me now that we are being mislead or lied to, I haven't figured that out yet.

That is what I have been saying. The capacity that most of them list is at the internal battery voltage of 3.7-3.85v. When converting to higher voltages some capacity will be lost. They claim 30000mah@3.8v=114wh and they are claiming 18000mah@3.8v=68.4wh. Which one is it? There shouldn't be any conv...

Yes the Powerfilm solar, very compact. If money wasn't a concern that would be the #1 choice for me. I've been on their website a bunch and eye balling that 42w panel. Their Lightsaver panels with the built in battery are kind of a neat idea. To small for what we are doing though. Received my power ...

Glacierjay that is some detailed information. So with the Eceen 30w panel you won't be able to replenish a nights usage but can extend the battery capacity to a degree. Their information is inconsistent as to which output provides the most power and fastest charging. Probably the only way to really ...

Make sure you unplug the Z2 when not using it. It uses around 5wh in standby mode over a single 16 hour day. Power bank capacity is typically rated at the internal battery voltage which is around 3.7-3.85vdc. Some specs will also list the watthours at that voltage. For the Nightcore NB20000 the spec...

craighagan wrote: ↑

Sun Apr 03, 2022 2:59 pm

I've a Z2. I both family camp and camp with scouts, often at places without electricity. Feel free to reach out if you have questions.
https://github.com/craighagan/hackproje ... PAP/HDM_Z2

Thanks so much for posting that link to your equipment. It has been very helpful.

Also getting one of these usb meters so that I can verify that everything is working the way it is supposed to. This one comes with an adjustable load resister for draining the battery and testing the capacity not that it is necessary. I'm sort of an electronics nerd since that's what my college deg...

Everything I listed above will output 15v@3amps = 45watts through the pd(usb-c) port with the correct 15v usb c cable. The Z2 ac power adapter supplies 30w so the 45w from all these devices will be more than enough even if you are running at maximum pressure. From what I've seen running the Z2 at 7-...

There's a million power banks on the market and it's tough to come by info for the Z2 being run on the various power banks. It looks like I'm going to have to be one of guinea pigs and roll the dice. These are the power banks that I'm thinking of getting. They check most of the boxes for my requirem...

I'm really disappointed in the selection of rugged waterproof power banks and solar panels for the outdoors. None of the compact lightweight systems that I've looked at allow for charging in questionable wet weather. For now you have to build that system yourself. Until I can get around to it I'm go...

This is one of the newer GaN(gallium nitride) pd wall chargers that are smaller, more efficient and run cooler. Not the latest technology but pretty new. This will fast charge the power banks I'm looking at via usb c ports and will have extra capacity in case I upgrade banks in the future. The multi...

I was pondering dc boost converters to get from 12v to 15v. I'm thinking my best option is going to be a pd(usb-c) car charger. This will allow me to run my cpap in the vehicle if I ever need to do that, hopefully never. With the 12v cables I already have it will allow me to connect to any 12v batte...

So glad you will get what you wanted and have piece of mind. I love a happy ending. :) Just so you know your not alone in your experience, sleep labs and myself don't get along very well. If I'm not heavily medicated I don't sleep. I've had 5 nights in the lab now. Two of those nights I had no medic...

Nitecore NB20000: 20,000mah/1000 = 22ah 22ah x 3.85v = 77wh of internal battery capacity(some of this will be lost during voltage conversion to 15v) They also list a spec of: 13,500mah@5v 13,500mah/1000 = 13.5ah 13.5ah x 5v = 67.5wh So converting 3.85v to 5v there was a loss of 9.5wh with the NB2000...