building a ups that can give me backup for like 5 hours?


Posted January 29th, 2009 by admin 1 Comment »
battery backup
brian_dean2002 asked:


i am building a ups, not buying one,,, the reason why i am doing that is because i want one with like 5 hours backup, here is what i have so far,,, a truck battery (145k… its really big) a dc to ac inverter (1000watts) and a 15amp charger (charger is completly manual, no cut off no nothing, just a coil that converts ac into dc) i have the changer connected to the battery and the battery+ charger connected to the inverter. everything is working great,,, when the power goes off the battery kicks in and i dont loss any data, it also works for like 4 hours on my computer setup,,, now comes the problem,,, i am worried that because of overchangering i am going to cook my battery, what should i do????