kdf;459812 Wrote: > On 2009-09-19, at 8:51 PM, ccrome2 wrote: > > > > > MeSue;459808 Wrote: > >> The battery is about 1.5 x 2 x 3 inches, going from memory. It's > >> charging now so I don't want to take it out to measure. As far as > the > >> weight... I am really bad at judging that. It definitely weighs > less > >> than the Boom even with battery and is much easier to carry > >> compared to > >> the Boom. > > > > It's a 10 AA NiMH pack. It's 5x2 AA batteries. > > Is there a reason why they aren't Lithium Ion (aside from perhaps > cost)? > I thought Li was generally the better choice when high dynamic current > > draws were involved. > > -kdf
Once again, one of those pesky trade-offs. Cost vs. size/weight vs. compliance regulations. Li-Ion is good, easy to chage, but they have a tendency to explode -- thus the necessary safety circuits (extra cost). It-Poly is less reacitve, but still has very substantial regulatory requirements. Ni-MH is very safe, less expensive, and for our requirements absolutely sufficient. We didn't need super high power/weight ratio (like a cell phone), nor high power/volume ratio (cell phone/laptop), which is where Lithium power solutions excel. The Radio needed high voltage, and 6-hour minimum playtime. Ni-MH was the chosen solution for that requirement. -- ccrome2 Caleb Crome Sr. Hardware Engineer Logitech SMBU (i.e. the Squeezebox people) <B>The future is here. It's just not widely distributed yet.</B> <I>-William Gibson</I> ------------------------------------------------------------------------ ccrome2's Profile: http://forums.slimdevices.com/member.php?userid=18023 View this thread: http://forums.slimdevices.com/showthread.php?t=68100 _______________________________________________ Radio mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/radio
