On Sunday 27 November 2005 07:40 pm, steve szmidt wrote:
>
> One thing to be aware of is that the electronics is built to handle a
> certain load. Putting a much larger battery, and load, could result in
> overloading the circuitry. Also the charging circuit has to be able to
> charge your batteries of course.
>
> Granted, I've never done it with a much larger batteries, and I don't
> know what kind of margins these circuits are built with. But I would
> imagine that if you connected a car battery to one of these 500W, put
> over 500W load on it and then turned off the AC you could eastoast it.
Adding a larger battery (or more batteries) doesn't pose a problem to the
UPS. It (the UPS) will still draw the same wattage at the same rate
regardless of the battery capacity. Recharging a larger capacity battery
will take longer, but unless the battery has an internal fault the UPS will
happily charge whatever size battery that you plug into it.
Plugging more devices (or higher current draw devices) into the UPS can
overload it. Plug a laser printer into a 300VA UPS, pull the power cord and
print a letter and you will no longer have a UPS.
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