The AirTies thread

Aharon

Executive Member
Joined
Sep 12, 2006
Messages
9,043
18Ah battery powers Fiber, router, Airtie and 2x Raspberry Pies. Voltage after 2 hour loadshedding @ 18.6V (90%).

Fiber and Airtie is powered directly from the battery, Router is powerd from a small DC-DC regulator taking the 12V down to 9V. Raspberry Pies are powerd with a 4xUSB DC-DC regulator.

Currently only powering the main Airtie but the rest will follow soon.

View attachment 764852
What did your setup cost
 

mtlost

Active Member
Joined
Dec 9, 2007
Messages
92
I have the 18Ah option, Sherlotronics box + battery is about R1k1.

The 7Ah option should be around R630.

Some extras for about R150

DC-DC regulator is a small MP1584EN jobby I modded inline with the power cable and insulated with heat shrink.

12V to USB DC-DC Regulator to power the raspberry pi 3&4 and charge pones when needed during extended outages.






 

adielk

Expert Member
Joined
May 21, 2009
Messages
4,538
What about this?


Features

Input voltage can vary from 90VAC to 265VAC without affecting the output voltage. (output voltage remains constant)

Input and output fused

Short circuit protected

Overload protected (resettable fuse)

Reverse polarity protected

Low voltage battery trip (Battery will cut out when voltage falls below 10V)

Input mains filtration surge, and lightning pmtected.

All operations are automatic,( in case of a power Inlure the supply will switch to battery,when the supply returns it will automatically retum to normal state)

Mains Fail Output Facility

Neat looking PVC flame retardant housing (Custom designed lur the powermax powerpack range)

The red output wire of power supplies is connected with red pin of battery.

The black output wire of power supplies is connected with black pin of battery.



Specs

Input voltage range : 90VAC to 265VAC

Input frequency range :47Hz to 63Hz

Inrush current : 60 Amp max

Input current : 800ma at full load

Power supply efficiency : > 75%

Output no load voltage : < 14VDC

Battery charger output : 13.8VDC ± 1%

Output Current : 2200mA

Battery charger current : 1000mA

Total power supply current : 3200mA

Over voltage protection : (The supply shall shut down if output voltage exceeds 16V)

Operating temperature : 49°C at continious full load

Insulation resistance (primary to secondary) : 30Meg ohm

Hi-Pot Test (primary to secondary) : 3600V for 3 seconds
 

adielk

Expert Member
Joined
May 21, 2009
Messages
4,538
In another thread

The problem with a UPS is the double conversions. You take the wall power, convert it to DC, only for the UPS to then convert it to AC again, and then you go and plug in the 12 V DC adapter to power the CPE/router into the UPS.

I got one of these CCTV backup power units (https://www.communica.co.za/products/psu-cctv-12vdc-3a) that already outputs 12V DC current and two DC connectors and wierd up the CPE and router directly to this. This cuts out one conversion automatically.

In the beginning it lasted me over 4 hours with both CPE and router running (with dual band Wi-Fi for what its worth). But I must have gotten a bad battery (purchased separately ) because I get just under two hours of time out of it now.
 

mtlost

Active Member
Joined
Dec 9, 2007
Messages
92
What about this?


Features

Input voltage can vary from 90VAC to 265VAC without affecting the output voltage. (output voltage remains constant)

Input and output fused

Short circuit protected

Overload protected (resettable fuse)

Reverse polarity protected

Low voltage battery trip (Battery will cut out when voltage falls below 10V)

Input mains filtration surge, and lightning pmtected.

All operations are automatic,( in case of a power Inlure the supply will switch to battery,when the supply returns it will automatically retum to normal state)

Mains Fail Output Facility

Neat looking PVC flame retardant housing (Custom designed lur the powermax powerpack range)

The red output wire of power supplies is connected with red pin of battery.

The black output wire of power supplies is connected with black pin of battery.



Specs

Input voltage range : 90VAC to 265VAC

Input frequency range :47Hz to 63Hz

Inrush current : 60 Amp max

Input current : 800ma at full load

Power supply efficiency : > 75%

Output no load voltage : < 14VDC

Battery charger output : 13.8VDC ± 1%

Output Current : 2200mA

Battery charger current : 1000mA

Total power supply current : 3200mA

Over voltage protection : (The supply shall shut down if output voltage exceeds 16V)

Operating temperature : 49°C at continious full load

Insulation resistance (primary to secondary) : 30Meg ohm

Hi-Pot Test (primary to secondary) : 3600V for 3 seconds
These specs are pretty much exactly the same as the Sherlotronics 3.2A unit I mentioned earlier. I wouldn't be surprised if they use the sherlotronics battery board as you can purchase those separately from Sherlotronics.
 

adielk

Expert Member
Joined
May 21, 2009
Messages
4,538
Will be getting 3 airties on Friday. I think best I keep 2 for my funny house.

So pm if interested.
 

powermzii

Expert Member
Joined
Jun 4, 2007
Messages
2,597
Will be getting 3 airties on Friday. I think best I keep 2 for my funny house.

So pm if interested.
Did you end up setting up the additional nodes? How has the coverage and throughput changed?
 
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