What gauge and type of wire to use for main power

[TheBikeMan]

Hi,
What gauge and type of wire are you guys using for the main power and for the cable for your C- P- B- from your BMS when you rebuild batteries?
It seems every time I open and older battery there is a different size wire in them.
Thanks

 

[Nealh]

Depends on the cell amp rating and the controller rating/amp draw.
Using thicker rated wire is for safety as it will run cooler and prevent bottle necks when a load is asked.



For P- & B - I use 14awg ( about 45a rating) and also the same on + connections, though you could use 16awg (about 32a rating).
For C- & C+ I use 22awg (7.5a rating) as my charge rate is never more then 2.3a.
If considering fast charging using 4 - 8a then consider 20awg ( 14a rating) for C wiring.

Some BMS come with tails soldered on the board so I extend these if need be.
For sensing I use 22/24awg.

 

[TheBikeMan]

That's very helpful. Thanks

 

[KirstinS]

Depends on the cell amp rating and the controller rating/amp draw.
Using thicker rated wire is for safety as it will run cooler and prevent bottle necks when a load is asked.



For P- & B - I use 14awg ( about 45a rating) and also the same on + connections, though you could use 16awg (about 32a rating).
For C- & C+ I use 22awg (7.5a rating) as my charge rate is never more then 2.3a.
If considering fast charging using 4 - 8a then consider 20awg ( 14a rating) for C wiring.

Some BMS come with tails soldered on the board so I extend these if need be.
For sensing I use 22/24awg.

Do you have a favourite supplier Neal ?


Sent from my iPhone using Tapatalk

 

[Nealh]

Do you have a favourite supplier Neal ?


Sent from my iPhone using Tapatalk

No, If I need any I just use a supplier off ebay for silicone awg. I have used HK when buying lipo but no longer use them at all.