Carlos E. R. wrote:
For an obvious reason: it was 4 car batteries in series.
If you were to look at telephone company batteries, you'd realize they have little in common with car batteries and in fact even predate them. The telephone office batteries are strings of individual cells wired together. They are also designed for continuous "float" service, while car batteries are designed for short term high current service. BTW, I used to work for a telecommunications company and the -48V plant in the office I worked in provided about 7000 amps and could support that load for several hours. Not many car batteries are capable of that. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org