VidPro
Flashlight Enthusiast
I have made a battery pack with CTA 12A D-cells, its a 12v battery pack with 20 of them 10x2 10 in series by 2 in parellel.
Charged it as a Whole (14.3v) then discharged it 2 times as seperated cells, to do an initial cycling, and the setup is not lasting the time i expect it to (low capacity).
Because my charge method is SLOW (not smart) and i dont have a CBA (battery analiser) i want to stick a few of them on the LaCrosse thing to test them, and to charge them with a cutoff.
and that is where my question comes in.
a "cutoff" especially the one on the lacross is not going to show up unless the charge rate is well over the overcharge rate, so the thing might not cutoff. but i really want to test at least 2 of the batteries and see what the capacity would be if it reached a cutoff.
there is not #$%@& (short for poopey) specs on the battery package, or on the site for the battery CTAdigital.com , so i dont know 2 things.
what would the charge rate have to be to get a V-Drop
What would the max voltage be for them off the charger charged, or what is the max voltage i should set the power controller to be for a charge of the series set.
how they sell a battery , and no charger for it, without providing some sort of specs or parameters is beyond me?
so far, i got them putting out about 9A at a 1.5A discharge rate :-( actually 3A discharge for 2 sets. a very poor capacity.
Charging at a voltage controlled 14.3v for the set, they got warm when they reached about that voltage, so i assume from that they were mostly charged.
so i am a bit limited in charger stuff, as i dont have a triton or a D-Cell "smart" charger, and after initial testing , it will mostly be charged easily as a single 12V unit, so i only need to test a few times.
If i wire it up to the LaCross, would i be better off to use 1000ma setting, it wont reach overcharge and wont cutoff, and then it wont ever be ruined
or
set it for 1800ma and hope IF it doesn't SEE the cutoff, it also doesn't blow up the cheap china battery?
at 1000ma it SHOULD be an adequite overcharge rate, and therein it should never get ruined, but not cutoff.
at 1800 it SHOULD be an adequite rate to see a voltage drop at the end of charge (or overcharge occurance) BUT if it doesnt SEE the V-drop, it would ruin the battery.
so now you see my quandry. run it at 1000, and a cutoff might not be spotted, run it at 1800, where a cutoff SHOULD exist, but if it didnt then i would have to go buy 2 more just to test what the REAL capacity is vrses the claimed BS.
Charged it as a Whole (14.3v) then discharged it 2 times as seperated cells, to do an initial cycling, and the setup is not lasting the time i expect it to (low capacity).
Because my charge method is SLOW (not smart) and i dont have a CBA (battery analiser) i want to stick a few of them on the LaCrosse thing to test them, and to charge them with a cutoff.
and that is where my question comes in.
a "cutoff" especially the one on the lacross is not going to show up unless the charge rate is well over the overcharge rate, so the thing might not cutoff. but i really want to test at least 2 of the batteries and see what the capacity would be if it reached a cutoff.
there is not #$%@& (short for poopey) specs on the battery package, or on the site for the battery CTAdigital.com , so i dont know 2 things.
what would the charge rate have to be to get a V-Drop
What would the max voltage be for them off the charger charged, or what is the max voltage i should set the power controller to be for a charge of the series set.
how they sell a battery , and no charger for it, without providing some sort of specs or parameters is beyond me?
so far, i got them putting out about 9A at a 1.5A discharge rate :-( actually 3A discharge for 2 sets. a very poor capacity.
Charging at a voltage controlled 14.3v for the set, they got warm when they reached about that voltage, so i assume from that they were mostly charged.
so i am a bit limited in charger stuff, as i dont have a triton or a D-Cell "smart" charger, and after initial testing , it will mostly be charged easily as a single 12V unit, so i only need to test a few times.
If i wire it up to the LaCross, would i be better off to use 1000ma setting, it wont reach overcharge and wont cutoff, and then it wont ever be ruined
or
set it for 1800ma and hope IF it doesn't SEE the cutoff, it also doesn't blow up the cheap china battery?
at 1000ma it SHOULD be an adequite overcharge rate, and therein it should never get ruined, but not cutoff.
at 1800 it SHOULD be an adequite rate to see a voltage drop at the end of charge (or overcharge occurance) BUT if it doesnt SEE the V-drop, it would ruin the battery.
so now you see my quandry. run it at 1000, and a cutoff might not be spotted, run it at 1800, where a cutoff SHOULD exist, but if it didnt then i would have to go buy 2 more just to test what the REAL capacity is vrses the claimed BS.
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