Not sure if this is in the right area.
So I recently purchased a new Ebike. A 2020 Voltbike Yukon 750 Limited.
The battery it comes with is a 17.5ah (840wh) 48v Reention style battery pack. Made with Samsung 35E cells. Having a background in electrical, as well as being an avid hobbiest for many years i'm well versed when it comes to lithium ion batteries. The Samsung batteries were a factor in the reason chose voltbike.
Voltbike advertises that the included 5A charger can charge a completely drained pack in 4 hours. The charger itself is a brand name charger it says 54.6v max voltage. Long story short. My battery performs fine but takes a long time to charge.. I've been monitoring it the last few cycles. It charges fast up to 53v at which point it ramps down charging current to a trickle. It takes like 2+ hours to charge my pack 1v from 53v to 54v. Where the charger cuts off. Should it not charge all the way to 54.6v? I know that charging to 4.05v(80%) or 4.1v(90%) instead of fully charging all the way to 4.2v (54.6v) can prolong the lifespan of the cells. I'm just concerned I have a bad cell In there and thats why it is taking forever to balance the pack. But why stop at 54v instead of 54.6 as the charger states. Thoughts?
So I recently purchased a new Ebike. A 2020 Voltbike Yukon 750 Limited.
The battery it comes with is a 17.5ah (840wh) 48v Reention style battery pack. Made with Samsung 35E cells. Having a background in electrical, as well as being an avid hobbiest for many years i'm well versed when it comes to lithium ion batteries. The Samsung batteries were a factor in the reason chose voltbike.
Voltbike advertises that the included 5A charger can charge a completely drained pack in 4 hours. The charger itself is a brand name charger it says 54.6v max voltage. Long story short. My battery performs fine but takes a long time to charge.. I've been monitoring it the last few cycles. It charges fast up to 53v at which point it ramps down charging current to a trickle. It takes like 2+ hours to charge my pack 1v from 53v to 54v. Where the charger cuts off. Should it not charge all the way to 54.6v? I know that charging to 4.05v(80%) or 4.1v(90%) instead of fully charging all the way to 4.2v (54.6v) can prolong the lifespan of the cells. I'm just concerned I have a bad cell In there and thats why it is taking forever to balance the pack. But why stop at 54v instead of 54.6 as the charger states. Thoughts?