Digital voltmeter display reccomendations

I've bought a few cheapo volt/current meters from eBay, just for blue led display
There are plenty for car and general purpose use

Ok, i had had a look at the bay but i have seen some dubious reviews on other sites so i was wondering if anyone had any specific experiences wrt accuracy and longetivity.

Inwould rather spend a bit more now and not have to replace it later.

Cheers

Thanks. I will get one from the Bay then.

Cheers all

Time Average reading Meters are available which may well be a much better solution for you than 'snapshot' measurements.

No switch/button is required and the sample duration of these can also be altered with the better ones...

Have a look at the professional suppliers of such instruments (An Internet search for "Battery Monitor"), explain perhaps by Email to suppliers as to what you are trying to monitor, plus why, and any good manufacturer/supplier should be able to properly assist you with their range of products.
For Current measurement, a Hall Effect sensor is your friend as it doesn't sit in series with your supply at all. Some meters will even directly display the VA used from your Battery(s) so that you really know how much charge remains plus sometimes the remaining running time you have remaining at the rate of discharge you are using! Some also monitor Battery Temperature as well, which can be important.

hope this assists, whilst I have such things as these for tests, they may not be suitable for your particular applications; so I haven't made any recommendations as to type other than 'don't expect good results from Ebay sellers - especially low price ones - for this sort of thing'!

Mik

Edits to clarify things - hopefully!

Warning! May contain Nuts
plus springs, washers, screws, etc, etc.

this works well, with advantage of being able to draw a diff voltage from it.
can have it showing input or output an off.
an cheaper than most that are just displays
http://www.ebay.co.uk/itm/New-DC-3-35V-To-3-5-35V-100W-LED-Voltmeter-Step-up-Adjustable-Power-Boost-Module-/141149814807?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item20dd2f4017&clk_rvr_id=777113488146&rmvSB=true
as long as you don't want to draw more than 100w from it that is at diff voltage
tested it for well over 40hrs with no probs

Edited by Grinner - 08 February 2015 at 6:08pm

Sorry, just reread the pigeon english and i presume you can adjust the voltage. I think i had better buy it and start experimenting.

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Sapro2 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 31 January 2015 Location: Somerset Status: Offline Points: 354	Post Options Post Reply Quote Sapro2 Report Post Thanks(0) Quote Reply Topic: Digital voltmeter display reccomendations Posted: 07 February 2015 at 5:56pm
	Hello all, I was wondering if anyone had any reccomendations for digital voltmeter displays to keep an eye on my battery's power. Thanks in advance😃 Rob

bitSmasher Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 23 June 2012 Location: Melbourne Status: Offline Points: 2295	Post Options Post Reply Quote bitSmasher Report Post Thanks(0) Quote Reply Posted: 07 February 2015 at 10:20pm
	I've bought a few cheapo volt/current meters from eBay, just for blue led display There are plenty for car and general purpose use

odc04r Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5482	Post Options Post Reply Quote odc04r Report Post Thanks(0) Quote Reply Posted: 07 February 2015 at 10:50pm
	Bought a 24v blue LCD meter for £2 off Ebay recently, seems to work ok.

Sapro2 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 31 January 2015 Location: Somerset Status: Offline Points: 354	Post Options Post Reply Quote Sapro2 Report Post Thanks(0) Quote Reply Posted: 08 February 2015 at 9:06am
	Ok, i had had a look at the bay but i have seen some dubious reviews on other sites so i was wondering if anyone had any specific experiences wrt accuracy and longetivity. Inwould rather spend a bit more now and not have to replace it later. Cheers

Earplug Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216	Post Options Post Reply Quote Earplug Report Post Thanks(0) Quote Reply Posted: 08 February 2015 at 11:47am
	I´ve bought a few of the cheapos off the bay and they´ve all worked fine. If not, you´ve got Buyer Protection.
	Earplugs Are For Wimps!

Sapro2 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 31 January 2015 Location: Somerset Status: Offline Points: 354	Post Options Post Reply Quote Sapro2 Report Post Thanks(0) Quote Reply Posted: 08 February 2015 at 11:58am
	Thanks. I will get one from the Bay then. Cheers all

slaz Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713	Post Options Post Reply Quote slaz Report Post Thanks(1) Quote Reply Posted: 08 February 2015 at 12:16pm
	I use a cheapie ebay one on my 24V setup .... works fine, but check the current consumption. Mine was using about 20-25mA ISTR .... which I decided was a bit high for a system with less than 1A mean current draw - so I put a momentary contact switch in series. You just hit the switch now and again to check the voltage. The other thing to bear in mind is the "speed" of the meter. Many are a bit too "fast" really i.e. the reading will "flicker" when playing hard because of the audio .... a tad irritating, but not a real problem.
	REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON

audiomik Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 06 April 2010 Location: Bath, UK Status: Offline Points: 2962	Post Options Post Reply Quote audiomik Report Post Thanks(0) Quote Reply Posted: 08 February 2015 at 2:29pm
	Time Average reading Meters are available which may well be a much better solution for you than 'snapshot' measurements. No switch/button is required and the sample duration of these can also be altered with the better ones... Have a look at the professional suppliers of such instruments (An Internet search for "Battery Monitor"), explain perhaps by Email to suppliers as to what you are trying to monitor, plus why, and any good manufacturer/supplier should be able to properly assist you with their range of products. For Current measurement, a Hall Effect sensor is your friend as it doesn't sit in series with your supply at all. Some meters will even directly display the VA used from your Battery(s) so that you really know how much charge remains plus sometimes the remaining running time you have remaining at the rate of discharge you are using! Some also monitor Battery Temperature as well, which can be important. hope this assists, whilst I have such things as these for tests, they may not be suitable for your particular applications; so I haven't made any recommendations as to type other than 'don't expect good results from Ebay sellers - especially low price ones - for this sort of thing'! Mik Edits to clarify things - hopefully!
	Warning! May contain Nuts plus springs, washers, screws, etc, etc.

audiomik Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 06 April 2010 Location: Bath, UK Status: Offline Points: 2962	Post Options Post Reply Quote audiomik Report Post Thanks(0) Quote Reply Posted: 08 February 2015 at 2:32pm
	For some reason the 'Edit' function doesn't work here properly, so sorry about the multiple posts. Mods, please can you delete all but the last post of these very similar ones from me? Mik
	Warning! May contain Nuts plus springs, washers, screws, etc, etc.

Grinner Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 02 December 2005 Location: essex Status: Offline Points: 407	Post Options Post Reply Quote Grinner Report Post Thanks(1) Quote Reply Posted: 08 February 2015 at 6:06pm
	this works well, with advantage of being able to draw a diff voltage from it. can have it showing input or output an off. an cheaper than most that are just displays http://www.ebay.co.uk/itm/New-DC-3-35V-To-3-5-35V-100W-LED-Voltmeter-Step-up-Adjustable-Power-Boost-Module-/141149814807?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item20dd2f4017&clk_rvr_id=777113488146&rmvSB=true as long as you don't want to draw more than 100w from it that is at diff voltage tested it for well over 40hrs with no probs Edited by Grinner - 08 February 2015 at 6:08pm

Sapro2 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 31 January 2015 Location: Somerset Status: Offline Points: 354	Post Options Post Reply Quote Sapro2 Report Post Thanks(0) Quote Reply Posted: 08 February 2015 at 8:16pm
	@audiomik - thanks for the info a bit of internet research to be done by me i think @grinner - i had a look at that module, is there a control to adjust the output voltage at the moment my amp is 12v. Maybe in the future i will go 24 or higher but not just yet Cheers again, thanks for your help
	Splat Soundsystem Baby Sham pram Soundsystem Sapro - SoundCloud https://soundcloud.com/sapro DJ Sapro. West country free party DJ and Producer.

Sapro2 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 31 January 2015 Location: Somerset Status: Offline Points: 354	Post Options Post Reply Quote Sapro2 Report Post Thanks(0) Quote Reply Posted: 08 February 2015 at 8:20pm
	Sorry, just reread the pigeon english and i presume you can adjust the voltage. I think i had better buy it and start experimenting.
	Splat Soundsystem Baby Sham pram Soundsystem Sapro - SoundCloud https://soundcloud.com/sapro DJ Sapro. West country free party DJ and Producer.