Quick 'Battery Voltage' Question

[Ebiker555]

Hi guys,

My new ebike battery says on it that it has a 30v Output & 42v Input.

Could some of the wiser heads on here clarify if this is a 30v or 42v battery in the sense of how you are supposed to determine battery voltage?

Reason being I paid for a 36v battery & don't know if they've supplied me with a battery of 6v less or or 6v more?

Appreciate your advice....

 

[Deleted member 25121]

It would help us if you could include a photo of the wording

 

[Nealh]

Likely label is wrongly marked and should read 36v out put (nominal) and is a 42v max charge rate.
Measure the battery out put with a meter.
A 36v battery is it's nominal voltage which is about 50%, fully charged 100% it is 42v.
Min discharge is 30v but generally it is detrimental to keep going that low.

 

[Ebiker555]

It would help us if you could include a photo of the wording

Thanks for your reply. Here is the label on the battery. Would you class it as a 30v or 42v battery ?

 

[vfr400]

It's Chinese. They get mixed up when translating. 30V is the minimum voltage when discharged.

 

[Ebiker555]

It's Chinese. They get mixed up when translating. 30V is the minimum voltage when discharged.

Thanks VFR.

Would that mean I have paid for a 36v but the battery they have actually supplied me with is a 30v?

 

[vfr400]

Thanks VFR.

Would that mean I have paid for a 36v but the battery they have actually supplied me with is a 30v?

No, you've got a 36v battery that charges to 42V and discharges to 30V. The voltage changes during use. The 36v is just a nominal middle value.

 

[Nealh]

Do the math and it all adds up correctly you have a 36v nominal battery.

36v x 15.6ah = 561.6wh just as it states on the label.

 

[Deleted member 25121]

Thanks for your reply. Here is the label on the battery. Would you class it as a 30v or 42v battery ?

Chinese quality at its finest eh. It's almost certainly a 36V battery, try measuring the voltage with a DVM.

 

[Ebiker555]

Thanks for all your replies. Appreciated.