On Sat, 29 Sep 2007 19:42:39 -0700, meow2222@care2.com
wrote:

>PS for 10 seconds of use one could possibly go with no
>output regulation and stay in spec.
>12v is 10x nicds, (and is non critical anyway.)

It's not so easy to assume a cell is 1.2V. They range from
1.45 or so (float, typical might be closer to 1.35V with a
load) down to 0.8 per cell depending on remaining capacity
and cell impedance vs discharge rate. This could easily put
the pack outside of a stable (ATX spec) voltage range.