Battery condition meter.

[Dawes700]

Can anybody recommend a combined thumb throttle (left hand pref) and battery condition indicator.
At the moment I've got an On/Off switch and a thumb throttle. Indicator lights have failed. Nothing else, pedelecs, brake cut-outs are connected. The kit is an Alien Ocean front wheel 36v conversion.
I'm looking for something with the plugs/sockets already fitted as I don't feel confident enough to cut existing fine wires and re-solder. Relevant part of wiring diagram below, - if it's legible!




Thanks, ijn advance.

Dawes 700

 

[Deleted member 4366]

A voltmeter will be cheaper and more accurate:
https://www.ebay.co.uk/itm/DC0-100V-Voltmeter-LED-Panel-Digital-Display-Volt-Voltage-Meter-WaterProof/391880478791?hash=item5b3de59047:m:mtRmwQ7LNm1n4FNsoXFiYnQ

 

[Nealh]

This one looks quite nice and only 2 wire connection use for sla or lion/lipo up to 63v.

https://www.ebay.co.uk/itm/2-Color-LCD-12V-24V-36V-48V-Lead-Acid-Battery-Status-Voltmeter-Monitor-Meter-Car/401447248442?_trkparms=aid=222007&algo=SIM.MBE&ao=2&asc=49130&meid=ad4a16fe0fbe4acc82d7592b65f49153&pid=100005&rk=5&rkt=6&mehot=pp&sd=232695797107&itm=401447248442&_trksid=p2047675.c100005.m1851

 

[Dawes700]

A voltmeter will be cheaper and more accurate:
https://www.ebay.co.uk/itm/DC0-100V-Voltmeter-LED-Panel-Digital-Display-Volt-Voltage-Meter-WaterProof/391880478791?hash=item5b3de59047:m:mtRmwQ7LNm1n4FNsoXFiYnQ

Thanks.
At £1.99 I can even afford to mess it up.
On a more serious note the green&black wires from the controller connects to the red&black from the voltmeter I assume, but where does the yellow go to? I don't understand the wiring diagram in the 'blurb.'
Thanks again.
Dawes 700.

 

[Dawes700]

This one looks quite nice and only 2 wire connection use for sla or lion/lipo up to 63v.

https://www.ebay.co.uk/itm/2-Color-LCD-12V-24V-36V-48V-Lead-Acid-Battery-Status-Voltmeter-Monitor-Meter-Car/401447248442?_trkparms=aid=222007&algo=SIM.MBE&ao=2&asc=49130&meid=ad4a16fe0fbe4acc82d7592b65f49153&pid=100005&rk=5&rkt=6&mehot=pp&sd=232695797107&itm=401447248442&_trksid=p2047675.c100005.m1851

 

[Dawes700]

Thanks I agree. I presume this extract from the "blurb"
● The product is suitable for 3.7V lithium series multi-platform, 3 string, 4 string, 5 string, 6 string, 7 string and 8 string 9 string 10 string 11 string 12 string 13 string 14 string 15 string - which could be written in double Swahili as far as I'm concerned - means it's OK for my battery as you said. I ask only because it stresses how suitable it is for lead/acid batteries.
Thanks again.
Dawes 700.

 

[Deleted member 4366]

Thanks.
At £1.99 I can even afford to mess it up.
On a more serious note the green&black wires from the controller connects to the red&black from the voltmeter I assume, but where does the yellow go to? I don't understand the wiring diagram in the 'blurb.'
Thanks again.
Dawes 700.

Sorry, I didn't notice that it was a three-wire one. That complicates it a bit. Black goes to the battery black (ground) and the yellow goes to the battery positive. The red goes to any voltage source less than 30v, so you can join it to any of the 5v wires, on the PAS, throttle or motor hall sensors. They're normally thin red wires and they're only energised when the controller is switched on.

 

[Nealh]

Thanks I agree. I presume this extract from the "blurb"
● The product is suitable for 3.7V lithium series multi-platform, 3 string, 4 string, 5 string, 6 string, 7 string and 8 string 9 string 10 string 11 string 12 string 13 string 14 string 15 string - which could be written in double Swahili as far as I'm concerned - means it's OK for my battery as you said. I ask only because it stresses how suitable it is for lead/acid batteries.
Thanks again.
Dawes 700.

It is suitable for SLA and Lithium - ion/ lithium polymer, not suitable for Lithium iron phosphate aka LIFEPO4.
It is suitable for up to 63v battery which means Lithium - ion 15S /15 cells in series,
15 X 4.2V = 63V.