Per Jessen wrote:
type of service. Hmm, well, that's how I saw them used in the late 80s in a large datacentre installation. The generator was about the size of a large
Batteries used for starting cars & trucks are not suitable for that train engine. Maybe they weren't regular truck batteries.
There are batteries that LOOK like auto batteries, but they're different internally, designed appropriately for the service.
Typical UPSs, as used with personal computers only last several minutes. Those used for telecom etc. have to carry the load for several hours or even days. Because they don't use generators?
That depends on the site. Some have batteries only, other batteries and generators.
Using the wrong type of battery may work in the short term, but premature failure is pretty much guaranteed. I'm not sufficiently knowledgeable to discuss this, but Schneider/APC seem to disagree with you, they use standard lead accumulators.
I doubt they'd be recommending automotive batteries for UPS use. They're simply the wrong type for the job. Another type of battery, is the kind used for trolling motors, fork lifts, golf carts etc. These are designed for continuous loads over significant time. They can't deliver the surge current a car battery can deliver, but they can properly support the intended use. They are often called deep discharge, as they're used to power the vehicle as far as possible and be discharged in the process far more than you'd want with automotive or UPS batteries. It's all a matter of the appropriate battery for the task. They're all lead acid batteries, but the internal design is different to accommodate the different requirements. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org