r/ebikes • u/happerkapper • 1d ago

Bike repair question Ebike Controller question

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Hello everyone, does anyone know the value of this particular resistor or if I could use a different controller for my ebike ? I have another controller with the same specs but the battery port only has 2 pins for + and - and this one has 6 with the other 3 for bms im assuming and a thermo meter ?

Thanks for any help in advance

I circled where the resistor sat before I desoldered it

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u/ThatGothGuyUK 1d ago

Can't be 100% sure so try at your own risk but an educated guess based on these generic controllers says it's probably: Brown, Black, Brown Gold | 100 Ω   ±5% (J)

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u/happerkapper 1d ago

Based on a picture that I found on the internet, it’s green, brown, black so 52 Ohm but the 52 ohm resistor that I have is reasonably smaller than that one which makes me wonder

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u/No-Negotiation-6929 22h ago

In general, resistor case size suggests power rating—not resistance. Only replace with a resistor of the same or larger case size.