This morning, 2017-02-10, while surfing I came across this article from "Cool Tools".
Tests 30 different battery types
I bought this tester after I replaced a button battery in a storage array and it died after 3 months (MTBF should have been 2 years). To replace the battery took a weekend (down time, uncabling, removal of the processor, recabling, testing). After the brand new, out of the package battery died I decided that a reliable testing device was needed. I searched the net and found this one. While pricey it proved it’s worth by showing that 2 out of 4 of the next replacement batteries were less than optimal. If you are checking batteries that are easily accessible and not critical – this may not be the tester for you. If you absolutely need your batteries to be 100% – then get this tool. You will be surprised by how many “out of the packaging” batteries will not pass. You will be ecstatic with how much longer your batteries will last (because they won’t be 90% dead before you put them in).
02/9/17 -- Mark Bonanno
It got me thinking.
I do not like carrying batteries around because I never really know their condition.
Sure I sell new batteries.
But how long have they been on the shelf?
Putting a normal volt-meter on them just tells me their voltage with no load.
Perhaps I could put a load on them and then test but I don't know the appropriate loads.
Or if that would really work.
So instead I tell customers to either buy their batteries from
Sun City Hardware or
Hanks Hardware in Temecula.
Whichever is closer.
They both will open the transmitter and install a new battery for the customer.
They have great customer service.
Hopefully they get enough customers so that their battery supply is always fresh.
However I'd like to definitively know if the batteries are good.
This is where the above battery tester might come in handy.
So I looked into it a bit more and found the manual and I copied a
YouTube Video showing its usage.
Original YouTube video can be found here: www.youtube.com/watch?v=yOeD5V8v5Mw
Notice how the manual says you should wait twenty minutes before testing again. Yet elsewhere it contradicts itself. Makes me wonder...
How does this tester know how much energy each cell is suppose to deliver?
A few years ago I extensively tested a wide range of batteries.
Totally draining them and then recharging them and testing again.
Some battery cells are far superior to others.
How does this tester know a far superior cell is at 90% and a normal is at 90%?
The capacities might be 800% better on one.
So without addressing these issues I do not have much confidence.
So the tester would never pay for itself.
However it would be cool to own.
Along with a device to indicate the direction of interference.
And finally spare external receivers that can be powered directly from AC.
To cover all possible problems with transmitters that are getting bad reception.