Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




26 posts

Geek


# 220284 3-Aug-2017 11:39
Send private message

I'm setting up some security and fire monitoring at our Scout hall, using a phone hotspot to provide an internet connection (the phone also runs the Cleverloop Smokey App).  The power in the hall is only on for a few hours every day when the hall is in use, but is off the rest of the time.  I'm looking for an option to keep the phone powered for the rest of the time.  

 

I've considered using a power bank, but the ones I've had switch off when the phone is charged, and don't switch back on until the button is pressed.  Are there options that do something different?  

 

This is a temporary solution, as the power situation will change after a refurbishment.  I'm looking for something very low to no cost.


View this topic in a long page with up to 500 replies per page Create new topic
 1 | 2
BDFL - Memuneh
64852 posts

Uber Geek

Administrator
Trusted
Geekzone
Lifetime subscriber

  # 1836455 3-Aug-2017 11:47
One person supports this post
Send private message

You could use a UPS and run the phone from a USB wall charger... But most small UPS will have a maximum charge time of less than one hour even at minimum load - e.g. Eaton 3S.







26 posts

Geek


  # 1836469 3-Aug-2017 11:53
One person supports this post
Send private message

I can't believe a UPS never occurred to me.  "It only there was some sort of Power Supply that was Uninterruptible"


 
 
 
 


BDFL - Memuneh
64852 posts

Uber Geek

Administrator
Trusted
Geekzone
Lifetime subscriber

  # 1836471 3-Aug-2017 11:55
Send private message


26 posts

Geek


  # 1836508 3-Aug-2017 12:45
Send private message

Unfortunately out of the budget.  Low to no cost means well under $100 otherwise it's not worth doing.




26 posts

Geek


  # 1836517 3-Aug-2017 12:57
Send private message

I actually have a powerbank like that somewhere in my emergency supplies, and a north facing window.  I'll give it a go. 


Banana?
4872 posts

Uber Geek

Subscriber

  # 1836560 3-Aug-2017 13:46
2 people support this post
Send private message

Surely if the power is on a few hours a day, the phone's battery will do for the rest of the day? Or does the app it is running really drain the power?


 
 
 
 


1914 posts

Uber Geek


  # 1836576 3-Aug-2017 13:52
One person supports this post
Send private message

Get a battery that doesn't have such a button.

1087 posts

Uber Geek


  # 1836635 3-Aug-2017 15:24
2 people support this post
Send private message

Those solar panels built into power banks are a bit of a gimmick. The solar panel only makes a few milliamps so won't even keep up with the phones consumption.

 

Can you get your hands on a good or recently retired car battery, a cigarette lighter USB adaptor and a car battery charger? Hook those up and you have an instant DIY UPS.




26 posts

Geek


  # 1836636 3-Aug-2017 15:25
Send private message

trig42:

 

Surely if the power is on a few hours a day, the phone's battery will do for the rest of the day? Or does the app it is running really drain the power?

 

 

 

 

Yeah, it lasted about 18 hours.  


1087 posts

Uber Geek


  # 1836667 3-Aug-2017 15:39
Send private message

baplaski:

 

trig42:

 

Surely if the power is on a few hours a day, the phone's battery will do for the rest of the day? Or does the app it is running really drain the power?

 

 

 

 

Yeah, it lasted about 18 hours.  

 

 

If you don't need wide bandwidth for the data, and you're not on Spark/Skinny, switching the phone to 2G only will usually improve the battery life. Don't forget to also kill blue tooth, syncing and background data.


3885 posts

Uber Geek

Subscriber

  # 1836890 3-Aug-2017 22:46

tripper1000:

 

Those solar panels built into power banks are a bit of a gimmick. The solar panel only makes a few milliamps so won't even keep up with the phones consumption.

 

Can you get your hands on a good or recently retired car battery, a cigarette lighter USB adaptor and a car battery charger? Hook those up and you have an instant DIY UPS.

 

 

This is actually the best system for what the OP needs. Only you will need quite a high current battery charger to reliably recharge the battery in only a few hours of mains on time. Also check that the battery charger doesn't draw power from the battery when the mains is off, Some definitely do.

 

Although for a temporary system, it probably won't matter if the batteries get worn out quite quickly.






2568 posts

Uber Geek


  # 1836897 3-Aug-2017 23:22
2 people support this post
Send private message

Get Someone who has a child there to park up their motorhome around the back for the duration? These days they all have battery banks and most have pretty decent solar panels too.

Free parking for them in winter, and free UPS for you 👍

15352 posts

Uber Geek

Trusted
Subscriber

  # 1836922 4-Aug-2017 06:54
Send private message

Maybe @jeffnz could hook you up with a decent sized battery (30ah?), then get a $20 battery charger from trademe and a $5 12v to USB adapter from ebay.


2868 posts

Uber Geek

Trusted
Lifetime subscriber

  # 1839147 4-Aug-2017 13:15
One person supports this post
Send private message

if its for the scouts we can may have something for $00.00 unless we have to freight, what part of country are you, PM me. I'll check what we have around 30a/h





Galaxy S8

 

Garmin  Vivoactive 3




 1 | 2
View this topic in a long page with up to 500 replies per page Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Chorus to launch Hyperfibre service
Posted 18-Nov-2019 15:00


Microsoft launches first Experience Center worldwide for Asia Pacific in Singapore
Posted 13-Nov-2019 13:08


Disney+ comes to LG Smart TVs
Posted 13-Nov-2019 12:55


Spark launches new wireless broadband "Unplan Metro"
Posted 11-Nov-2019 08:19


Malwarebytes overhauls flagship product with new UI, faster engine and lighter footprint
Posted 6-Nov-2019 11:48


CarbonClick launches into Digital Marketplaces
Posted 6-Nov-2019 11:42


Kordia offers Microsoft Azure Peering Service
Posted 6-Nov-2019 11:41


Spark 5G live on Auckland Harbour for Emirates Team New Zealand
Posted 4-Nov-2019 17:30


BNZ and Vodafone partner to boost NZ Tech for SME
Posted 31-Oct-2019 17:14


Nokia 7.2 available in New Zealand
Posted 31-Oct-2019 16:24


2talk launches Microsoft Teams Direct Routing product
Posted 29-Oct-2019 10:35


New Breast Cancer Foundation app puts power in Kiwi women's hands
Posted 25-Oct-2019 16:13


OPPO Reno2 Series lands, alongside hybrid noise-cancelling Wireless Headphones
Posted 24-Oct-2019 15:32


Waikato Data Scientists awarded $13 million from the Government
Posted 24-Oct-2019 15:27


D-Link launches Wave 2 Unified Access Points
Posted 24-Oct-2019 15:07



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.