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NanaVNA H4 battery indicator shows full but unit powers off after a minute

 

My battery indicator icon shows a full charge but the unit turns off after about a minute.

I charged it for about 5 minutes, unplugged the USB cable and it stayed on for about the same amount of time then turned off again, acting as if it needed a charge.

I have seen the indicator show a partial charge in the past.

I haven't used it in a few months, don't recall how much charge was on it when it was last used.

Is this a known issue?

tnx and 73,
Scott
Cliff
 

Scott,

This may not help, but try leaving it charging overnight and see if that helps. It could be just the battery went bad.

73,
Cliff, AE5ZA

On Aug 5, 2022, at 15:10, Scott Ginsburg <k1oa@...> wrote:

My battery indicator icon shows a full charge but the unit turns off after about a minute.

I charged it for about 5 minutes, unplugged the USB cable and it stayed on for about the same amount of time then turned off again, acting as if it needed a charge.

I have seen the indicator show a partial charge in the past.

I haven't used it in a few months, don't recall how much charge was on it when it was last used.

Is this a known issue?

tnx and 73,
Scott
 

If you look at a graph of voltage versus discharge time, you will see a knee where the voltage drops quickly just before the battery is fully depleted. If you want to test battery performance read my article QST May 2022 page 34.

Charge the battery and retry.. My battery lasts in excess of 45 minutes.

If you want to know more about batteries I recommend



Larry W8LM

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