As of 2022 there are many badly performing clones on the market. V2/3GHz NanoVNA uses parts like ADF4350 and AD8342 which are costly and clones have been cutting costs by using salvaged or reject parts.
See official store and look for V2 Plus4/V2 Plus4 Pro versions only to avoid getting a bad clone. We have stopped selling V2.2 versions since October 2020, so all V2 hardware that are not Plus or Plus4 are not made by us and we can not guarantee performance.
Hi all, I'm new to the group.
I'm waiting for my nanovna v2 / plus 4 to arrive and was looking into what
battery to order.
3.7V 18650
But I understand there are 3 or 4 types; flat top, dimple and protected.
Any advice?
Standard flat top, the charger protects the cell already.
On Tue, 15 Feb 2022 at 14:29, Mike Fry <mtfry23@gmail.com> wrote:
I bought mine through Ebay. The full search string could be "PANASONICs
NCR Rechargeable battery 3.7V 3400mAh Flat Top" or similar. But, they
are "Flat Top" as has been said, and they seem to work perfectly...
Bob
M0TMT
On 14/02/2022 17:25, Mike Fry wrote:
You want the flat top. It is a tight fit and the dimple I doubt would
insert. If you read the online resources, it specifically states to use
the flat top.
Dave - WØLEV
On Tue, Feb 15, 2022 at 4:29 AM Mike Fry <mtfry23@gmail.com> wrote:
> Hi all, I'm new to the group.
> I'm waiting for my nanovna v2 / plus 4 to arrive and was looking into what
> battery to order.
> 3.7V 18650
> But I understand there are 3 or 4 types; flat top, dimple and protected.
> Any advice?
>
>
>
--
*Dave - WØLEV*
*Just Let Darwin Work*
I have a 18650B battery but it does not fit the battery cradle. Is there a different 18650? Thanks!
I bought these. Perfect fit.
2 PCS 3.7V 20A 3200mAh Flat Top Rechargeable Battery for Camera Doorbell, Flashlight, Headlamp, Electronic Devices. https://www.amazon.com/dp/B09NKZXD4P/ref=cm_sw_r_apanp_PJhfYdgeKLRXh
> I have a 18650B battery but it does not fit the battery cradle. Is there a different 18650?
You need a flat top 18650 battery. A variation of the theme.... same battery, same capacity, just without the top
protrusion...
--
/*73 Alberto I2PHD*
<<< https://www.i2phd.org >>>/
i bet the 5000 is a fake number
high values are 3200 or 3300mah (most of them dropping down to 2500 or
2600 after a while)
but 5000?? at least questionable
if you only measure 2400 then those are used cells with a new shrink
tubing on them
dg9bfc sigi
Am 25.03.2022 um 18:41 schrieb Sohail Anjum:
CONFIRMED Richard. Perfect fit. They arrived today. Thank you for you help and suggestion.
Anthony
You need to get your cells from a reputable source.
You cannot find a major manufacturer that makes a 18650 cell with
greater capacity than 3600 mAh.
I would suspect that your cell has a capacity of less than 2000 mAh.
The flat top cell has no protective circuit inside it and requires the
device that it is used in to provide the protection.
Glenn
On 3/25/2022 1:41 PM, Sohail Anjum wrote:
> Hi,
>
> I bought mine from Amazon. Just search with keyword "*18650, Flat top,
> 5000mah*". Here are some picture of mine.
>
> Sohail VE3ITU.
>
--
-----------------------------------------------------------------------
Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIVwb4uiv@arrl.net AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI, FRA, NRA-LM ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
Hi Sohail,
That 5000mah cell may be a fake. Max mah for 18650 is <4000mah. The
control chip is one of the limiting factors.
Mike C.
On 3/25/2022 1:41 PM, Sohail Anjum wrote:
Yeah. 3550 is the max legit I can find. I use a Panasonic 3400 mAh unprotected flat-top in my V2Plus4. Protection is supplied by the battery management circuit in the V2Plus4.
Hi Team,
Thank you for the feedback. I learned something new.
Sohail VE3ITU.
Battery lenght is critical. It is mentioned somewhere on the homepage, but I can't find it now. Unprotected batteries seem to be about 66mm long and protected a little more. And thats why the protected ones do not fit.
You want the shorter battery, protection is done by the circuitry in the
nano. I had to go to a vape shop to find ons that fit. Batteries Plus
only had the long ones.
On Wed, Apr 20, 2022 at 6:01 PM Leif M <leif.michaelsson@gmail.com> wrote:
I got a battery from www.18650batterystore.com
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