Dear Martyn,
I had the same question a while back and did a little analysis. The
advantage of the NP-type batteries are that they, and their ancillary
charging apparatus, are commonly found on-set, and around the world
(at least in commercial production scenarios). They are also somewhat
more robust.
However, I couldn't find any substantial advantage relative to NP-
type battery power vs. the L and M type batteries. In fact, the
largest L and M-type batteries seem to have a higher MAh rating than
the highest lithium chemistry NP-type, at least when using SD
recorders.
TSA and commercial aviation have put limits on the amount of lithium
in lithium chemistry batteries one can check or carry-on. While all
currently made lithium NP-type batteries are well below that limit,
the NiMH NP-type may offer a way around that issue.
Still, one would have to carry an ancillary charging station/power
supply, etc., which may be an advantage if multiple batteries are to
be re-charged.
Hope this helps.
Regards,
Bill
--- In Martyn Stewart <>
wrote:
>
> I'm looking for information on NP-type batteries. Who in the filed
> uses these? Is there an advantage using these batteries as apposed
to
> the sony L or M mount that are used in the Sound devices
recorders?
> (longer life)?
> Sound devices sells the XL-NPH adaptor for NP-type batteries, in
your
> opinion would you carry a bunch of Sony L-mount batteries of a
bunch
> of NP-type batteries?
>
> http://www.sounddevices.com/products/xlnphmaster.htm
>
>
> Martyn
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> Martyn Stewart
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