New wattmeter

[Deleted member 4366]

This one looks pretty good. It says that it holds the values when switched off. It has a remote shunt, so you can mount it wherever you want.

http://www.ebay.co.uk/itm/DC-50A-LCD-Voltage-Current-KWh-Watt-Car-Battery-Panel-Power-Monitor-Combo-Meter/181814316903?_trksid=p2047675.c100005.m1851&_trkparms=aid=222007&algo=SIC.MBE&ao=2&asc=20140122125356&meid=abfb62cdf5de4035900cee73c6164a71&pid=100005&rk=1&rkt=6&sd=171870530730

It would need to be mounted in a box of some sort.

I've ordered one to have a play with.

 

[soundwave]

the smaller one works fine

 

[Deleted member 4366]

It doesn't show the most important thing:Wh

 

[soundwave]

i can work it out as just for my light anyway

 

[anotherkiwi]

Is there a cheaper alternative to a Speedict? I just need a real time voltage reading from the battery that can be transmitted via Bluetooth. Is it easy to tap into the data sent from the controller to the LCD? At the source in the controller, the voltage is spot on when compared with the reading from the Wattmeter.

 

[awol]

Nice find d8veh.
Also with a backlight and low voltage alarm too.

 

[anotherkiwi]

https://onion.io/

At the moment I am looking at this Linux computer. At $5 it could be pretty awesome inside the controller of a bike...