'Half size NP-1' ?
Weigth and power consideration in mind, two half size batteries on an audio
recorder should be the norm. Not only (à la Cantar-X) this brings the peace of mind
a twin battery supply offers, but at about the same weight* it solves
the 98Wh power limitation set by the IATA.
Explanation: in a couple of years, the current 49Wh half size batteries will
deliver up to 70Wh each, i.e. 140Wh on a two battery recorder,
whereas a single battery of the same volume will still be restricted to 98Wh.
full size:
http://inspiredenergy.com/Standard_Products/NH2054/NH2054.htm
NH2054 HD34 14.4V, 6.8Ah, 98Wh
Weight: 434g / 15.3oz
Length: 153mm / 6.0"
half size
http://inspiredenergy.com/Standard_Products/ND2054/ND2054.htm
ND2054 HD34 14.4V, 3.4Ah , 49Wh
Weight: 234g / 8.3oz
Length: 87mm / 3.4"
"Inspired" batteries should become the NP-1 successors : same form factor, stronger housing,
self cleaning protected connectors, light, charge monitoring conform to the SMBus specs.
Furthermore the 'openess' of the manufacturer is unique. Click on the "Engineering Data Sheet",
you will be amazed !
Where can you find such thorough explanations and diagrams
in any battery manufacturer leaflet?
One flaw (easy to correct) : the two part charger is not built for on location survival.
jpb
* 2 x ND2054 = 468g/16.6oz versus 1 x NH2054 = 434g/15.3oz