Fitting voltage display on charger

Jimboyr6

10 kW
Joined
Jan 24, 2014
Messages
771
Location
Uk essex
If anyone is interested
So after adjusting my charger from 87.6v down to 86.1v I decided that a added voltage display would be a good thing to have, and also you can check when charging and maybe get abit of an estimate of time scale when charging,
All you need is this part https://www.ebay.co.uk/itm/152065577967,
A drill,some silicon sealer, a file,masking tape,soldering iron,philips screw driver,sharp blade
The LED display comes with 3 wires it needs 4-30v to work red is it power feed yellow is measuring feed, black is earth,
So the fan feed is 12v perfect so connect red to that,yellow to charger output live black to output earth which is also earth for the fan perfect
 

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$_57.jpgYes that would be nice if all chargers showed the voltage. I have a similar setup. I have 2 36V packs series to get 72V. I have a small waterproof LED voltmeter on each battery pack on the bike. This way I can monitor each pack when charging also voltage when riding, and to keep a eye if the packs are balanced at the end of my ride.
 
That is cool, I just made a voltage display from a cheap led voltmeter, that can just go in line on the charger output. That way it can be used on all my chargers, or even on a bike. Don't use it much on bikes anymore, because I have 4 CA's. But I use them all the time on chargers, just to see how my charge is doing. Nearly full, or a long way to go still.

In my case, I use andersons. So the display has a short fat wire, with andersons on each end. Then two small leads go to the display. The type voltmeter I got runs on 24v or more, a two wire type. So no need for a 12v input to run it.
 
Just to piont out these voltage displays have a tiny srew in the back if u wish to adjust them to match ur voltmeter readings.i think there abit out when run at higher voltage
 
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