APC smart ups 2200 INET

[Guest]

hi, first post, i hope i dont break any rules.

anyway, i work at a dump, and sometimes i can take home some cool stuff that comes in, a week ago or something i found a APC smart ups 2200 INET, and its not working.

as i understand the manual, it should

1. deliver current to connected devices even if not turned on
2. beep and flash one or more leds when i try to turn it on

it does neither

and, i dont have a charger and no money to get one, so my first question in a line of many more is, can i use a regular pc AXT switched psu to charge the batteries to see if thay are healyth?

[meglaw]

did not login.
_________________
peltier and or compressor gives great temps.

[torbjorn]

Usually, a UPS uses a higher battery voltage than an ATX psu can deliver (typically, 24 or 48 V divided in blocks of 12 V). To charge a battery with a nominal 12 V voltage, you will need about 14 V.

The simplest way is using an ordinary car battery charger and limit the charge current by a light bulb (for instance, a 12 V 21 W bulb, such as is used for stop lights etc in cars) in series with the charge current. Charge the battery blocks one at the time until all of them are charged.

Note that a gas-tight lead-acid battery that has been standing deeply discharged for a while might need to be connected to the charger for several hours before it begins to draw any charge current. If a such battery has not begun drawing charge current within 12 hours, it is probably dead.

[meglaw]

atx psu´s have negative voltages, i regularly use this to get higher volts, +3.3 and -12 that gives me +15.3volts (typicly red or orange and black or blue(on my fsp psu its puple for -12), that would be enough right?

i almost never use regular voltages to power fans or other extra thingys connected.

ah. i did not know that about that kind of battery, healyth tip!

gå sverige!
_________________
peltier and or compressor gives great temps.

[torbjorn]

A problem is that the negative voltages from an ATX power supply only can deliver very small currents, typically 0,1 or 0,5 A.
It would then be better to take two ATX supplies and connect the +3,3 V from one of them in series with the +12 V from the other one.

[meglaw]

I WILL DO IT. and i will post pictures!
_________________
peltier and or compressor gives great temps.

[Guest]

Did you try the internal charger? The APC's have a battery link on the back of the unit, (to turn it off) that needs to be inserted first.

[Guest]

Maybe it doesn't have a battery link.
Is this it? apcc.com/resource/include/techspec_index.cfm?base_sku=SUA2200&tab=documentation