On Mon, Jan 6, 2020 at 01:37 PM, Andy wrote:
" .. I had mine charged, and left it on the shelf for a few weeks and it died on me."
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All battery powered devices exhibit some self discharge during storage. My cellphones and tablets when completely powered down require recharging after a few days. A few weeks in my opinion is a pretty good shelf life for a 400 mAh device. Both of my NanoVNA's were delivered via slow boat from China, and were in transit for over 3 weeks. Both retained enough charge to power on when they arrived.
Depending on supplier, some batteries may be better quality than others so its hard to make a blanket statement regarding battery performance from a product like the NanoVNA that has multiple suppliers. I noticed hugen's new version 3.4 pcb has a 650 mAh battery instead of a 400 mAh one. This should translate into longer operating time, at least until the 4" display is added.
- Herb
