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.




108 posts

Master Geek
+1 received by user: 8


Topic # 183752 29-Oct-2015 00:40
Send private message

Hi there
I'd like to run a small water fountain pump by battery. It will be outside in the weather.
I have the fountain and pump. The water needs to be lifted about 30cm. Is it okay to have the little sealed 12v batteries outside? (I presume 12v would be all I need).
Thanks. :-)

Create new topic
20373 posts

Uber Geek
+1 received by user: 3880

Trusted
Subscriber

  Reply # 1415853 29-Oct-2015 02:23
Send private message

Got details of the pump?




Richard rich.ms

13256 posts

Uber Geek
+1 received by user: 2220

Trusted
Subscriber

  Reply # 1415874 29-Oct-2015 07:16
One person supports this post
Send private message

My first thought is that water is heavy, you may need a bigger battery than you think (guessing), and you have to charge the battery somehow.




AWS Certified Solution Architect Professional, Sysop Administrator Associate, and Developer Associate
TOGAF certified enterprise architect
Professional photographer


 
 
 
 


251 posts

Ultimate Geek
+1 received by user: 115


  Reply # 1416359 29-Oct-2015 19:32
2 people support this post
Send private message

You may be better off using a 12VDC transformer from a power source inside the house, and run 12V wires out to the fountain.




Try my latest project, a Cisco type 5 enable secret password cracker written in javascript!

458 posts

Ultimate Geek
+1 received by user: 95

Subscriber

  Reply # 1416389 29-Oct-2015 19:48
Send private message

We really need to know more about the pump. It should tell you the voltage and current draw. Also how long do you want it to run for?

The sealed batteries are usually ok for use outside. However if you want it to last awhile it would be best to make a small enclosure.




Geoff E



108 posts

Master Geek
+1 received by user: 8


  Reply # 1416787 30-Oct-2015 10:26
Send private message

Hi all

Thanks for your replies.  The pump is an 8W 50Hz.

Unfortunately it's not practical to hook up power from the house as it's such a long distance.

13256 posts

Uber Geek
+1 received by user: 2220

Trusted
Subscriber

  Reply # 1416798 30-Oct-2015 10:37
One person supports this post
Send private message

8W is around 0.7AH. A 30AH battery ($200 or so) will last you around a day and a half, more if you put it on a timer, probably less if it needs to be converted to 240V. Then you have to lug it around and charge it - those batteries are maybe 10kg.

Do you really need a fountain? Just run a cable under the ground if you do.




AWS Certified Solution Architect Professional, Sysop Administrator Associate, and Developer Associate
TOGAF certified enterprise architect
Professional photographer


458 posts

Ultimate Geek
+1 received by user: 95

Subscriber

  Reply # 1416801 30-Oct-2015 10:40
Send private message

bramwell: Hi all

Thanks for your replies.  The pump is an 8W 50Hz.

Unfortunately it's not practical to hook up power from the house as it's such a long distance.


If its 50hz then it will be an AC pump so you will need something to convert the DC power to AC and up the voltage from 12v to 230v. So you will need an inverter. Most hardware stores will sell these. However they are not really made to be left out in the wild.

8W at 12v(Remember the transformer is not perfect and you will likely use more power in the conversion) is 668mA so a 12Ah battery will last you about 12 hours.




Geoff E

1937 posts

Uber Geek
+1 received by user: 125

Trusted

  Reply # 1416871 30-Oct-2015 11:28
Send private message

Needing to invert 12VDC to AC voltage outdoors without an enclosure sounds like trouble. Get a 12V pump and charge the battery on solar?




Qualified in business, certified in fibre, stuck in copper, have to keep going  ^_^

20373 posts

Uber Geek
+1 received by user: 3880

Trusted
Subscriber

  Reply # 1416978 30-Oct-2015 13:21
One person supports this post
Send private message

8w is a baby pump. Plenty of 12v ones that size online used for the likes of pc water cooling and aquarium pumps.

Get a 12v one and a 12v battery and you're good to go. Forget inverters for ac powered pumps. Expense and inefficacy and needing to waterproof it.




Richard rich.ms



108 posts

Master Geek
+1 received by user: 8


  Reply # 1417242 30-Oct-2015 18:04
One person supports this post
Send private message

Thanks so much everyone.

We're thinking now that if we go ahead we'll get one of those solar units that has a battery back-up, all in the kit.

Many thanks again  :-)


2846 posts

Uber Geek
+1 received by user: 681

Trusted
Subscriber

  Reply # 1417248 30-Oct-2015 18:14
Send private message

Whatever you get won't like being cycled down passed 50% so it will shorten life regardless of type. Just seems a mission to have to charge a battery. Solar panels are fine if they are able to keep up the charge but it all comes at a cost.

If you are dead set on doing this PM and I can get you a couple of 150ah VRLA batteries for about $50 plus ngst each. They are used but not for long and only as backup so never cycled. They are quite big though




Galaxy S8

 

Garmin  Vivoactive HR




1441 posts

Uber Geek
+1 received by user: 350


  Reply # 1417673 31-Oct-2015 12:42
Send private message

http://m.banggood.com/7V-Solar-Power-Floating-Brushless-Water-Pump-Garden-Landscape-Submersible-Fountain-p-1002673.html




108 posts

Master Geek
+1 received by user: 8


  Reply # 1417903 31-Oct-2015 21:44
Send private message

Great advice everyone.  Thanks again  :-)

88 posts

Master Geek
+1 received by user: 13


  Reply # 1418215 1-Nov-2015 17:39
Send private message

We have a small ornamental fish pond in our back courtyard and we got a solar powered pump from "The Water Garden" here in Christchurch. Been running faithfully for about 3 years now. Great wee thing.

http://www.thewatergarden.co.nz


Create new topic



Twitter »

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 »

Talking net neutrality on RNZ Nine-to-Noon
Posted 24-Nov-2017 12:11


Air New Zealand experiments with blockchain technology
Posted 23-Nov-2017 15:39


Symantec selects Amazon Web Services to deliver cloud security
Posted 23-Nov-2017 10:40


New Zealand Ministry of Education chooses Unisys for cloud-based education resourcing management system
Posted 22-Nov-2017 22:00


Business analytics software powers profits for NZ wine producers
Posted 22-Nov-2017 21:52


Pyrios strikes up alliance with Microsoft integrator UC Logiq
Posted 22-Nov-2017 21:51


The New Zealand IT services ecosystem - it's all digital down here
Posted 22-Nov-2017 21:49


Volvo to supply tens of thousands of autonomous drive compatible cars to Uber
Posted 22-Nov-2017 21:46


From small to medium and beyond: Navigating the ERP battlefield
Posted 21-Nov-2017 21:12


Business owners: ERP software selection starts (and finishes) with you
Posted 21-Nov-2017 21:11


Why I'm not an early adopter
Posted 21-Nov-2017 10:39


Netatmo launches smart home products in New Zealand
Posted 20-Nov-2017 20:06


Huawei Mate 10: Punchy, long battery life, artificial intelligence
Posted 20-Nov-2017 16:30


Propel launch Disney Star Wars Laser Battle Drones
Posted 19-Nov-2017 21:26


UFB killer app: Speed
Posted 17-Nov-2017 17:01



Geekzone Live »

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



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.