D
dave
I've got an APC Back-Ups ES500 UPS that I had modified to use a pair
of 220AH 6V golf cart batteries instead of the 7AH battery that's
inside the UPS.
It works, but there are a few things that concern me. It's using a
240V AC 50 amp circuit breaker between the batteries and the UPS, and
it makes a buzzing noise when it's under load. Is this safe? I'm not
using it right now because I don't think it's right.
I'm looking for an appropriate DC fuse and cut-off switch, but the DC
fuse is not easy to find. Is there generally any sort of
short-protection for the batteries built into the small APC UPS? Would
it be ok to not use any fuse?
The UPS has a 300 watt inverter, but I'm thinking it may place a
larger load on the batteries. Would a 30 or 40 amp blade-type
automotive fuse be ok for this?
I also have a larger 12 amp battery charger that I'll use to recharge
the batteries after a long power outage. Right now I'm cutting off
the batteries and unplugging/turning off the UPS during charging. If
I left the batteries connected and the small internal UPS charger
going while using the external charger, would it cause problems?
of 220AH 6V golf cart batteries instead of the 7AH battery that's
inside the UPS.
It works, but there are a few things that concern me. It's using a
240V AC 50 amp circuit breaker between the batteries and the UPS, and
it makes a buzzing noise when it's under load. Is this safe? I'm not
using it right now because I don't think it's right.
I'm looking for an appropriate DC fuse and cut-off switch, but the DC
fuse is not easy to find. Is there generally any sort of
short-protection for the batteries built into the small APC UPS? Would
it be ok to not use any fuse?
The UPS has a 300 watt inverter, but I'm thinking it may place a
larger load on the batteries. Would a 30 or 40 amp blade-type
automotive fuse be ok for this?
I also have a larger 12 amp battery charger that I'll use to recharge
the batteries after a long power outage. Right now I'm cutting off
the batteries and unplugging/turning off the UPS during charging. If
I left the batteries connected and the small internal UPS charger
going while using the external charger, would it cause problems?