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rfm96w
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.
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5 Replies
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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?
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You should be able to power it with almost anything according to page 36 here. A pocket full of 9V batteries with a home made adapter should do the trick.
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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.
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