One of my crews is doing small job outside the US. Does anyone know of the smallest and lightest battery that can be used on the rfm96w. It's the little 2 watt blue brick that receives only for the rover. Needs to last 8 hours and be as light weight as possible. Seems like years ago I saw a crew using camcorder batteries. I don't know how many amps minimum is required for operating the rm96w in recieve mode only.
Batteries for mobility scooters are about the size of a riding lawn tractor and last longer.
I use the riding lawn tractor batteries myself because they are 1/3 the price and power a 3.5volt gadget for days.
U use lawn tractor battery? How do u mount it to the prism pole? How many amps are we talking?
You should be able to power it with almost anything according to http://www.pacificcrest.com/library/User_Guide_RFM96W.pdf&apos ;">page 36 here. A pocket full of 9V batteries with a home made adapter should do the trick.
There is a 12v to 3.5v adapter
It wiill recharge the onboard battery
The lawn tractor battery & wiring adapter fit in an ammo style box that sits on the ground
More useful at a base or control point
I have put it all in a backpack
[USER=81]@A Harris[/USER] I think you may be thinking of one of the newer ones which is the cylindrical one about 30cm high. From memory that does have an internal battery.
For the OP: I'm curious why you wouldn't be powering it from the receiver? You have to have a wired connection to get the data into the receiver and every cable will have a power pair in the wiring which is a 6 or 7 pin lemo from memory.
The camcorder batteries were 12v 2.3 amp hour units, Not sure what sort of endurance you are looking for but a 12v 7 amp hour gel cell will get you a days work close enough while still being small enough it will be portable. Search for a Yuasa NP7-12.