I believe Nano M2's are ~6W. The data sheet lists it as 5.5W, ubnt is
usually pretty accurate on power consumption for sizing off-grid systems in
my experience.
I recommend checking out
http://wndw.net/ for guidance on sizing the power
system if you're looking for more info. Even if you're shooting for
20hrs/day of uptime, it's *generally* better to size for at least 2 days of
uptime w/o sunlight (effective hours of sunlight; cloudy and foggy days are
effectively zero sunlight days). The bay area is pretty easy 'cause we have
good weather but if you want 90% uptime for the year (which is low, in
practice) you'll want at least a day of backup.
Also consider getting a timer of some sort to shut the device off if you
don't need it active at night! That will really save on your power budget.
On Sun, Apr 1, 2018 at 9:01 PM, Max Schwartz <maxschwartziv(a)gmail.com>
wrote:
*I'm putting together a solar wi-fi repeater for
peoplesopen. Does anyone
have a number for average power consumption for the Ubiquiti NanoStaton
loco M2? Know of any cheaper/better components? *
*ItemCostSpecsBattery
<https://www.amazon.com/dp/B0010Z4MDK/ref=psdc_389574011_t1_B018IU1XSQ>$1712V,
5A, 60WCharge controller
<https://www.amazon.com/Y-SOLAR-Waterproof-Controller-Lead-acid-Discharging/dp/B00XTQ76WW/ref=sr_1_20?ie=UTF8&qid=1522631531&sr=8-20&keywords=solar+panel+with+charge+controller>$135A,
12V, 60W panel maxSolar Panel
<https://www.amazon.com/Polycrystalline-Solar-Panel-Module-Charging/dp/B01IFJ73X4/ref=sr_1_7?ie=UTF8&qid=1522634307&sr=8-7&keywords=20w+solar+panel>$3820W,
20.5”x14.4”Wifi Repeater
<https://www.amazon.com/dp/B00HXT8FFI/ref=psdc_1194486_t1_B00DCNRTAG>$45Datasheet
<https://drive.google.com/open?id=1DfxWDUMRfWqSYGr9rSBUCFbibCPe-0vB>, Sales
page <https://www.ubnt.com/airmax/nanostationm/>, 5.5W max power, Up to 24V
DC inputTotal Cost including tax and shipping(17+13+38+45)*(1.1)+10 =
$135Power AuditThe wifi repeater claims a “max power of 5.5W” I’m hoping
that average power requirements are less than this? Assumptions (24hr
period):3W continuous average power usage20 hour up time4 hours of direct
sunlight (source
<https://solarpowerrocks.com/solar-basics/how-much-electricity-does-a-solar-panel-produce/>)85%
charge efficiency (source
<https://www.solar-facts.com/batteries/battery-charging.php>)Power
generation:4hr * 20W * 0.85 = 68 WhPower consumption ?:3W * 20hr = 60Wh*
--
Max Schwartz
maxschwartziv(a)gmail.com
314-578-4503 <(314)%20578-4503>
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