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ion507
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Joined: 05/12/2014
Location: Australia
Posts: 14

Posted: 05:21am 29 Aug 2018

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I saw this posted on a camper trailer Facebook page. For the price, it may be just what someone is looking for as an easy fit for a basic 12V setup. 3 parts to it are current transformer, electronics module and the display connected by a USB cable. Obviously it won't do the job of a $500 Battery Management System.

www.ebay.com.au/itm/Wireless-Voltmeter-Ammeter-DC-120V-100A-VOLTAGE-AMP-AH-SOC-Power-Battery-Tester/163091909578

Their description:

Battery Status At A Glance.
Charging status indicator, looks like a smartphone.
Combines many functions in one, Dual display
Voltage (V), Current (A), Capacity (AH)
Power (W/KW), Energy (KWH)
Temperature (C), Working Hours (H)
By turning External device/Relay on and off, it can control external devices, such cut off Power input.
Trigger external Relay (Not included) when the reading reach preset value.

[OVP] Over Charge Voltage protection
[LVP] Over Discharge Voltage protection
[OCP] Over Discharge Current protection
[NCP] Over Charge Current protection

Come with a Through-hole Current transformer, it doesn't require shunt.
The current sensor can be placed on the Positive or Negative side of power.
Reverse polarity protection.
Doesn't require isolated power, self-powered 6-80V.
Nondestructive installation, it is very easy to install.

TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6283

Posted: 05:33am 29 Aug 2018

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Quote Come with a Through-hole Current transformer, it doesn't require shunt.

I don't think so.
It will be a hall effect sensor.
Provided it can be configured for the different battery types, the price is good.

Jim

VK7JH
MMedit

ion507
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Joined: 05/12/2014
Location: Australia
Posts: 14

Posted: 10:50am 29 Aug 2018

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Don't know if can be configured for different battery types, probably just set the battery capacity. Must be able to change those voltage and current protection levels too. Here's the current sensor:

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4044

Posted: 10:54am 29 Aug 2018

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The listing mainly refers to a Hall effect sensor, so it will be :)

John

lizby
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Joined: 17/05/2016
Location: United States
Posts: 3378

Posted: 12:32pm 29 Aug 2018

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Very interesting. I don't see where it explains what about it is "Wireless". Has anyone found the "English manual"?

This Aliexpress page has more info: https://www.aliexpress.com/item/DC-120v-Wireless-voltage-meter-Gauges-ammeter-Voltmeter-Battery-Charging-coulometer-capa city-Power-detector-Tester/32858623812.html?spm=2114.search0104.8.9.5b9b7b66csmh87&priceBeautifyAB=0

The wireless part refers to communication between the display and detection modules.

Two relays can be controlled by settings to cut charging circuit and/or load circuit (as I read it).
Edited by lizby 2018-08-30

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed

mikeb

Senior Member

Joined: 10/04/2016
Location: Australia
Posts: 174

Posted: 12:07am 30 Aug 2018

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Have ordered two of them.
On the slow boat though.
Seller says it comes with an English manual but is probably chinglish.
The website photos show a rear view which clearly shows a plugin wifi module.

There are 10 kinds of people in the world.
Those that understand binary and those that don't.

Turbo46

Guru

Joined: 24/12/2017
Location: Australia
Posts: 1642

Posted: 01:40am 30 Aug 2018

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This device is also available from Banggood Here - There is an Instructions pdf for download.

BillEdited by Turbo46 2018-08-31

Keep safe. Live long and prosper.

Bill7300
Senior Member

Joined: 05/08/2014
Location: Australia
Posts: 159

Posted: 11:39pm 30 Aug 2018

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Banggood is restocking at the moment though ....
the other Bill

Bill

Benzol
Regular Member

Joined: 07/01/2015
Location: Australia
Posts: 64

Posted: 04:54am 31 Aug 2018

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Banggood have a couple of different units. I have this one but not installed yet.

https://www.banggood.com/PZEM-031-DC-6_5-100V-20A-4-in-1-Digital-Display-LCD-Screen-Voltage-Current-Power-Energy-Meter-p -1111791.html?rmmds=myorder&cur_warehouse=CN

db

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