Day to day discussions on S/P, page-241

I did a quick research on.
Northrop Grumman
Global Security
Catalog of Capabilities & Product

Battery Technology – Lithium Polymer
Cold Pak: One of PowerGrid’s
most significant design features is
its advanced technology battery
backup capability. This design provides
significantly more energy storage
capacity of a normal 23lbs lead
acid battery in a small 3lbs battery
pack. The dual “Hot Swap” battery
packs within each PowerGrid 800 UPS
will provide between 6 and 9 minutes
of hold time for the attached equipment
and, with an attached battery
expansion module, will provide over
30 minutes of hold time. The “Cold
Pak” exhibits less than 10 degree
temperature rise over ambient on
full discharge compared to the average
of 50 degree temperature rise
of all other chemistries. This Cold Pak
design dramatically enhances and
extends the life of the batteries
and the internal UPS circuitry.