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powering without a battery installed


Andrew 2021/06/29 05:35

Hi, just received my nanovna V2 plus 4, but don't have a battery as yet. Just like to check that there are no issues with powering it up for the first time via USB without a battery fitted?
Thanks,
Andrew

Teton Amateur Radio 2021/06/29 08:56

There was a message on here some time back that it was okay to run it
without a battery. I just got mine a few days ago and have used it
without the battery. Still looking for a battery to put in mine.

Mick - W7CAT

----- Original Message -----
From: "Andrew via groups.io"
To: NanoVNAV2@groups.io
Sent: Tuesday, June 29, 2021 06:35:13 AM
Subject: [nanovnav2] powering without a battery installed

> Hi, just received my nanovna V2 plus 4, but don't have a battery as
yet. Just like to check that there are no issues with powering it up for
the first time via USB without a battery fitted?
> Thanks,
> Andrew
>
>
>
>
>
>
--
Untitled Document

Jos Stevens 2021/06/29 20:14

Sure you can do that.

Op 29-6-2021 om 14:35 schreef Andrew via groups.io:
> Hi, just received my nanovna V2 plus 4, but don't have a battery as
> yet. Just like to check that there are no issues with powering it up
> for the first time via USB without a battery fitted?
> Thanks,
> Andrew
>


--
Dit e-mailbericht is gecontroleerd op virussen met Avast antivirussoftware.
https://www.avast.com/antivirus

Siegfried Jackstien 2021/06/29 22:47

it should work without battery

any "normal" 18650 cell should fit (crack a defective notebook battery
open or wherever you may find an 18650 cell)

greetz sigi dg9bfc

Am 29.06.2021 um 14:35 schrieb Andrew via groups.io:

Esteban H 2021/06/30 18:35

Dear all,

The NVNA Plus 4 come without a battery?

Regards


El mié., 30 jun. 2021 4:03, Jos Stevens <jrs@xs4all.nl> escribió:

David J Taylor 2021/06/30 19:02

On 30/06/2021 18:35, Esteban H wrote:
> Dear all,
>
> The NVNA Plus 4 come without a battery?
>
> Regards

I found there was an option to purchase with, or without, but the
shipping cost was greater with the battery, and could only be done by
DHL (IIRC).

David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

Esteban H 2021/06/30 19:23

Thanks.

El mié., 30 jun. 2021 19:04, David J Taylor via groups.io <david-taylor=
blueyonder.co.uk@groups.io> escribió:

Andrew 2021/06/30 12:24

Thanks all for the replies!
I have powered it up via usb and it appears to be working so that's great!
Now to source a battery, and thanks for the tips about that.
Regards,
Andrew

zeljko adzic 2021/07/01 08:11

the second type of power source affects the measurement values.


On Thu, 1 Jul 2021, 03:50 Andrew via groups.io, <irbsurfing=
yahoo.co.uk@groups.io> wrote:

n2msqrp 2021/07/01 09:33

Can anyone recommend a reliable source for the 18650 cells in the U.S.



Mike N2MS

> On 07/01/2021 2:11 AM zeljko adzic <agamotori@gmail.com> wrote:

>

>
>

>
>
>
> the second type of power source affects the measurement values.

>

>
>

>

> On Thu, 1 Jul 2021, 03:50 Andrew via [groups.io](http://groups.io),
<irbsurfing= [yahoo.co.uk@groups.io](mailto:yahoo.co.uk@groups.io)> wrote:

>

>> Thanks all for the replies!
> I have powered it up via usb and it appears to be working so that's great!
> Now to source a battery, and thanks for the tips about that.
> Regards,
> Andrew

>>

>>
>>

>>

_._,_._,_

* * *

n2msqrp 2021/07/02 20:49

I have found a source for the cells - Battery Source.



Is the flat top battery the proper type?



Mike N2MS

> On 07/01/2021 9:33 AM MICHAEL ST ANGELO <mstangelo@comcast.net> wrote:

>

>
>

>
>

> Can anyone recommend a reliable source for the 18650 cells in the U.S.

>

>
>

> Mike N2MS

>

>> On 07/01/2021 2:11 AM zeljko adzic <agamotori@gmail.com> wrote:

>>

>>
>>

>>
>>
>>
>> the second type of power source affects the measurement values.

>>

>>
>

>>

>> On Thu, 1 Jul 2021, 03:50 Andrew via [groups.io](http://groups.io),
<irbsurfing= [yahoo.co.uk@groups.io](mailto:yahoo.co.uk@groups.io)> wrote:

>>

>>> Thanks all for the replies!
> I have powered it up via usb and it appears to be working so that's great!
> Now to source a battery, and thanks for the tips about that.
> Regards,
> Andrew

>>>

>>>
>>>

>>>

_._,_._,_

* * *

David J Taylor 2021/07/03 10:34

On 03/07/2021 01:49, n2msqrp wrote:
> I have found a source for the cells - Battery Source.
> Is the flat top battery the proper type?
> Mike N2MS

Yes, at least for the NanoVNA V2 Plus4.

David GM8ARV
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

Lou W7HV 2021/07/03 04:49

Yep.  Flat top.  I got a Panasonic 3400 mAh.  I haven't timed it, but it goes through the battery relatively quickly so higher capacity is beneficial.

n2msqrp 2021/07/03 08:55

Thanks for the information.

I gave the wrong name for the supplier. The company I am looking at is Battery Junction.

Mike N2MS

Esteban H 2021/07/03 14:17

Dear Zeljjo,

Could you provide a link where the behaviour you indicated ("affects
measurements") is explained?

Thanks,
Esteban.

El jue., 1 jul. 2021 7:12, zeljko adzic <agamotori@gmail.com> escribió:

Lou W7HV 2021/07/03 12:19

I got mine from https://www.18650batterystore.com/

Don Bomer, W5MML 2021/07/03 15:55

Hi Mike,
I've used a couple of different brands from Amazon.com with good results
but I see that neither of them is currently available. So, I search for a
YouTube video and found *THIS <https://www.youtube.com/watch?v=qMZuHMlRw_0>*
one. After watching it, I guarantee you that I will *NEVER *buy a Chinese
battery, *AND *those that claim to provide 9,999 mah, or anything above
3,500 mah for that matter, are *ABSOLUTE LIARS*! 🤬
Don, W5MML...🤠

On Thu, Jul 1, 2021 at 8:33 AM n2msqrp <mstangelo@comcast.net> wrote:

n2msqrp 2021/07/03 21:47

I ordered LG batteries.

Mike N2MS

David J Taylor 2021/07/04 07:30

On 03/07/2021 21:55, Don Bomer, W5MML wrote:
> Hi Mike,
> I've used a couple of different brands from Amazon.com with good results
> but I see that neither of them is currently available. So, I search for
> a YouTube video and found *THIS
> <>* one. After watching it, I
> guarantee you that I will *NEVER *buy a Chinese battery, *AND *those
> that claim to provide 9,999 mah, or anything above 3,500 mah for that
> matter, are *ABSOLUTE LIARS*! 🤬
> Don, W5MML...🤠

Indeed, an interesting video. There are lots of sites with hints on how
to tell fake 18650 batteries:


https://batterybro.com/blogs/18650-wholesale-battery-reviews/30828867-is-it-a-fake-18650-battery-featuring-the-samsung-25r

is but one example. I recently bought 4 18650 "3400 mAh" batteries
/and/ a torch for GPB 20, accepting that they were likely fakes:

https://www.amazon.co.uk/gp/product/B08C74D9PP

They measured 2717, 2757, 2820 and 2828 mAh, when checked with this charger:

https://www.amazon.co.uk/gp/product/B07G7Z9P5H

73,
David GM8ARV
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

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