The battery of an electrically assisted bike (EAB) in a few lines
07/10/2026My first e-MTB ride
07/10/2026
Here is my small contribution to the blog, with this little article titled:
The battery of your Power-e-bike electric bike kit for dummies.
To begin, I think that like me, you must have asked yourself at the time of your purchase at power e-bike:
– what would be the ideal battery to buy with this kit?
First of all, here is what I can tell you about that:
Firstly, you will need to define the ideal power to select for your kit; the simplest trick is to base yourself on the power output of an average cyclist, i.e. about 150-300 Watts.
electric bike pack 35 amps 2000 watts
For this, power-e-bike has added a small logo on the electric pack you will choose:
Reminder: it is the controller present in the pack that will determine the real power of your kit.
So, assuming you decide to be a big lazybones (-;, and you want to turn your bike into an electric bike able to leave behind the scooters of our dear button-pushing teenagers.
You will surely choose the 35 A controller supplied in the electric bike accessory packs:
35 TLCD or (35 HLCD if you would rather have a motorbike-style twist-grip throttle)
With such power, this kit will therefore be able to provide you with an average power of about 8 cyclists!!!!
your electric bike kit will have a maximum power of:
– 2000 Watts if fitted with a 60v nominal battery
– 1650 Watts if fitted with a 48v nominal battery
– 1200 Watts if fitted with a 36v nominal battery.
And yes, it must be said that at power-e-bike, the same kit works with several batteries without any modification! Wonderful, isnu0027t it!
Assuming you still want an ultra-powerful electric bike, you will go for a 60 V nominal battery.
And the simplest trick will be to choose a battery with a continuous discharge capacity at least equal to that of the controller:
– In this case, in our example, a 35 A one.
Continuous discharge capacity, for an electric bike battery??? What is it?
First of all, it will be its capacity to deliver constant energy throughout your ride, i.e. at least 35 A (A = Amperes).
Do not confuse it with the discharge current peak, which will not be constant (between 20 and 120 seconds depending on the manufacturers).
So, to keep it simple, let us look together at examples of batteries found at random on the net:
I have put comments directly on the images, it will be much simpler:
– example with a 60v 15Ah battery
to
avoid with the 35A controller, OK for the other accessory packs based on 17A or 22A controllers.
60v 10Ah battery
This battery will be OK on the sole condition of taking the “upgrade high Rate” option, which will let the battery accept continuous discharges up to 50A.
on the other hand, note the range, which will be barely 20km.
