Battery Wiring N00b Query

docrocket

docrocket

1 W
Joined
Apr 12, 2018
Messages
52
I am repurposing my 36v battery from my old bike into a new bike, and I have a couple of (undoubtedly rookie) questions about wiring.

The battery has three outbound connectors (see photo). One (black connector) is the power out, one (white) is the charging connector, and the smallest one (I am assuming) is for reading the voltage.

I have a charging port which has two main wires. My question is, does it matter which wire goes to which in the charging connector on the battery?

https://ibb.co/jAcSpT
https://ibb.co/bHsA9T

Much obliged for help!
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Yes, it does matter which wire on the charger goes to which wire on the battery. Your question is vague. Didn't you have to connect your battery to your charger on the old bike? Where is the picture of your charger? Doesn't your charger still have the matching connector on it?

At any rate, the positive (red) wire on the battery needs to be connected to the positive output wire on the charger (also red?). And the negative (black) wire on the battery needs to be connected to the negative output wire on the charger.
 
Rassy, the charger is a standard 3-prong round connector. The battery used to be attached to a charging port built into the bike,but that port is gone. I have a replacement port off a different battery with the same connection style. It has a black wire and a blue wire.
 
Sorry about messing up your thread. Use your volt meter to make sure the (+) wire from the battery goes to the (+) wire of the charger. Just plug in the charger without hooking it up to the battery to check which wire is (+), and hence which is (-). If you don't have a multi-meter or haven't used one report back for guidance, but you don't want to guess at the polarity.
 
I have a voltmeter. I know how to use it to check the voltage (one pin on each connector of my battery and it shows 40.6 volts) but guidance on how to tell which line is positive would be helpful.

Having done that (however it's done) , I think I get it: find the positive wire on the charger and make sure that the accompanying slot on the port goes to the positive wire on the battery.
 
docrocket said:
I have a voltmeter. I know how to use it to check the voltage (one pin on each connector of my battery and it shows 40.6 volts) but guidance on how to tell which line is positive would be helpful.

Having done that (however it's done) , I think I get it: find the positive wire on the charger and make sure that the accompanying slot on the port goes to the positive wire on the battery.
Click to expand...

If the red probe from the meter is on positive and black probe on negative, the voltage will read as a positive number. If the reading is a negative number then you got it backwards.
 
You must log in or register to reply here.

Similar threads

romandesign
Current limiter setting question - is it set too low on an off-the-shelf ebike?
Replies
10
Views
727
Chalo
Chalo
P
Switching twist throttle to a thumb throttle: please help with different color wiring
Replies
14
Views
1,496
hemmadroid101
H
romandesign
Wiring tail light with blinkers to a 1T4 cable - need help figuring out the wiring.
Replies
5
Views
476
AGS
AGS
S
Rize Secondary 52V battery charging and using for other ebikes
Replies
1
Views
286
amberwolf
amberwolf
L
Trying to get throttle function connecting eye 3 display to Damao 60v 5600w single rear drive e scooter
Replies
3
Views
227
lilhorse
L
Back
Top