PLS Help my ups keeps shutting down after one hour (solved)

[giftslayer]

My ups keeps shutting down for no resion even in power it does it

i have made modifications on it but it whas shutting down before the mods
its not overheating bc i dont feal eny heat

the mods i made was made to try and fix it
here is a list
*i build a fan in it to keeps it cool and i am not fealing en heat enymore
*i replaced the battery with a bigger deapcycle battery
*I am chaging the bigger battery with a external chager that is charging at 12.4V
*its not pluged in that wall enymore bc i am using exernall chager

I think its a proline 460W ups but i lost the modle num.

*****Update*****

I think i found the problem it seams that the ground cable was'nt connected to the ups so i just resolderd it and then it dint shutdown it's running for more that a day nou with no shut down

And i cant pick one of my own answer as a soulotion. thats stuped

 

[bilalmk95]

replace the new battery with the old one and then check. I think the battery capacity in teared out that is the reason why it keeps shutting down. Maybe

 

[giftslayer]

replace the new battery with the old one and then check. I think the battery capacity in teared out that is the reason why it keeps shutting down. Maybe

The old battery is dead so i try that with a newer 12V battery of the same type than the old on but dint help but,i even hade the bromblem with the old battery befor it was dead and without eny mods the mods i made on it was to try and fix the problem

Its werd it keeps fealing like if its on a timer and keeps terning off evry hour even with the Small 12V battery and the ups gets power from the from the wall directly into the input (no External charger) its olmost like its setings is set to tyrd of evry hour with no warning, but i dont see anithing in setting when using Winpower.

and i forgot to menchon i know its not my pc is drawing to much W fro the ups bc on my radio and a 150W motor i hade layng arond

Sorry for my bad spelling

 

[giftslayer]

i think i found the problem it seams my ups was'nt connected to ground so i resolderd the connection an dnou it doesent shutdown evry hour.