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Good battery life

 

Hooray for the tinyVA battery.? I had not used my unit in over a year, turned it on, and the battery was at almost full charge.? To me, that is an outstanding shelf life from a quality rechargeable battery.? Thank you.
 

Lithium Ion batteries have almost zero self discharge. So providing there is no current draw they should remain charged anlmost indefinitely.
Having said that, it’s kinder to the battery to not store it fully charged. For long term storage around 50% SOC is much kinder to the longevity of the battery. Peter.
 

Thank you for the information.? When setting the tinySA aside, one does not consider such a thing.? ?I will now.
73s,
?
 

While the long shelf life is true, it is also true that in the real world there is often a very small but non-zero current drain on the cells. Sometimes I wonder how many long forgotten iPods have been found in desk drawers with dead and swollen batteries. For this reason it is wise to pull the unit out of storage periodically to check the state of charge and maintenance charge it if necessary.

On Sun, 06 Apr 2025 06:32:41 -0700
"DAVE REISER WA3TRS via groups.io" <DAVEREISER@...> wrote:

Thank you for the information.? When setting the tinySA aside, one does not consider such a thing.? ?I will now.
73s,

--

73

-Jim
NU0C
 

> Sometimes I wonder how many long forgotten iPods have been found in desk drawers with dead and swollen batteries.
The TinySA model has a physical switch that disconnects the battery from the power circuit. The iPod and newer devices are built on a digital switch that constantly draws some current.
?
 

True that. If I had my way it would be a world-wide law that every battery powered portable device has to have a hard OFF switch. However there is also the protection board attached to the cells that is in play, plus any circuit leakages around that switch for whatever reason. The charging electronics in particular do not disconnect with the power switch. As I wrote, very small but non-zero. At any rate, as a case in point I once let my early NanoVNA-H languish for some months. It also has a physical switch but still the battery suffered. It was damaged somewhat but not completely ruined so I was able to use the unit for some time before I replaced the battery. Now I periodically check its charge if I have not used it in a while and maintenance charge if necessary. Better safe than sorry.

You should see the battery I just replaced in my portable HDTV that has been not been used in several years. It too has a physical switch. The battery was puffed up to the point where it would have made a decent pillow for a small creature. It is fortunate that the battery cover returned to its former shape (and that the battery did not rupture).

On Sun, 06 Apr 2025 08:07:22 -0700
"Gerd via groups.io" <gerd.vipre@...> wrote:


Sometimes I wonder how many long forgotten iPods have been found in desk
drawers with dead and swollen batteries.
The TinySA model has a physical switch that disconnects the battery from the power circuit. The iPod and newer devices are built on a digital switch that constantly draws some current.
--

73

-Jim
NU0C

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