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.
Trying to get a source of reliable supplier for a battery and charger. Allot out there, and some charge ridiculous about for shipping.
Thanks in advance
NanoVna 1 and 2 handle charging. I bought one from Ebay and one from Digikey or or TME. I think you should watch for travel time, currently post can be slow. And connector type and size of the battery. One of my batteries is too thick to go into the VNA.
According to the post at https://www.rtl-sdr.com/nanovna-v2s-now-for-sale-on-ebay-and-tindie/ the battery connector is a JST-XH 2.54mm, and the maximum battery dimensions are 60mm x 40mm x 6mm. I couldn't find a battery that was smaller than the max dimensions *and* had the correct connector already attached. I ended up getting a 1200mAh 59x37x5 battery with a 2.0mm connector on it from Amazon, and a JST connector kit that I'll use to put the correct connector on it once it arrives. FWICT, there might be space available for a battery thicker than 6mm. My 5mm-thick battery leaves plenty of room between the two PCBs: https://imgur.com/a/JxjLz3L
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