Hey there!
I´m new to this forum but i´m watching EEVBlog for quite some time and thought it might be the best forum for electronic related questions.
Something short about myself: My name is Patrick, i´m based in germany, i´m almost 21 years old and in an education for an electronics technician for industrial engineering and my interests are of course in electronics, computers and android-based smartphones (linux world) aswell as model sport with rc airplanes and rc cars.
To my question:
I´d like to know if anyone knows how to read the date code of Fiamm industrial lead acid batteries
I got two of them from work used in uninterruptible power supply.
Both are labeled with the date of installation.
The first one was installed in 2014, the second one in 2016.
The type is FG20721.
Both of them have a date code burned in:
1120133/10
06201610/13
both the 2013 and 2016 could be the manufacturing year which would make sense compared to the date when they were installed.
Since they´re already old and have a low capacity, i got one "brand new".
I don´t have it on hand at the moment but it´s date code also has a 2016 inside so i wonder if this could be new old stock since the performance also isn´t great (it´s the exact same model).
In my application it should last about 20 hours as described in datasheet with a current around 300mA but it simply gives up after 10 hours.
Also when charging it up, my imax b6 multicharger calculates the capacity that was charged up and it´s not even close to 7200mAh, it´s around 1600mAh to 2300mAh with a current limit of 1A.
I already asked the seller for a replacement and he want´s me to send the battery in for verification.
I hope i´m in the right section for this question.
Thank you so far
