POE swtitch success

Products PMP
21
AMDXtreme wrote:
Thats right.

I have tried bringing with me a 15plate battery to power APs. 12v Power inverter is connected into battery.

Battery ===> 12V Power Inverter ===> Adaptor


I was talking of connecting the APs DIRECTLY to the batteries, powering them with 12V.
22

You could run an AP off a car battery, however the design is for 24V nominal.

You would want to run two 12V batteries in series for 24V

23
Jerry Richardson wrote:
You could run an AP off a car battery, however the design is for 24V nominal.

You would want to run two 12V batteries in series for 24V


It continue to not be clear to me.

Perhaps are you saying that it could work at 12V but it's not officially supported? Or it will not work at all?

What did you mean when you wrote "Spec is 12 - 36V"?
Where do you read it from?

I can get an already existing 12V power supply from another organization, so I cannot put my own two batteries in series to obtain 24V. I'd like to know if I could reliably use this 12V to power the APs.

Thanks.
24

SM’s have been reliably powered on 12V, and as the AP is the same hardware with different software it would be safe to assume that the AP would also run on 12V

With that said I do not know what, if any adverse affects running an AP at the lowest end of the power range will have on performance.

If it were me I would not run them on 12V.

25

AX-8400MTR2400S Module, Supports Motorola Canopy wireless APs, System Controller

http://www.power-sense.com/beldenibdn/n … bl8000.htm

26
giannici wrote:

Perhaps are you saying that it could work at 12V but it's not officially supported? Or it will not work at all?


I have some P10 5400 AP powered by a 12V car battery and I had no issues since several months.
The batteries are constantly charged by a car charger with overcharge protection, so the system acts like a UPS but charge can last for about 1-2 days in case of blackout.
In any case a car battery has a voltage of 13.8V.

Ciao
Massimo
27

The following site might prove useful if you are looking for step up / step down converters as we use them on some of our solar powered AP’s
http://www.chargingchargers.com/convert … rters.html