Pioneer e-bike

I like the trailer, but the specs on the bike itself are a little lacking.

My bike is a 750W BBS02 middrive, 48V battery, 10.5Ah. So it is essentially the same motor, but has a larger battery. After two years of daily use I find that my battery life has declined considerably, so I get around 20 mile range, down from about 25 miles previously. In theory my bike is also rideable when the battery is dead. In practice it is like dragging an anchor. Even the slightest incline is impossible.

I wash there was a readily available ebike that had these well thought out accessories, but also had a considerably larger battery.

Michael Cox wrote:After two years of daily use I find that my battery life has declined considerably, so I get around 20 mile range, down from about 25 miles previously.

I recently found this issue with the first battery pack I built. it's a 10S 1P pack and 3 of the cells were out of balance. The BMS (Battery Management System) is supposed to top balance, meaning once one cell reaches full charge, it bleeds off power to other cells to bring them all up to the same voltage. The charger was shutting down before this would happen. I hooked up a small single cell charger to the lowest cell and when it was full I noticed the power was being distributed and very slowly equalized all of the cells. They also make passive and active balancers which work continuously without the need to top balance, but I don't know of any ebikes out there using this technology as it would increase costs and I'd imagine most ebike retailers don't design their own battery packs.

It's likely that you could get more range by checking the cells and bringing them all up to the same voltage. The longer it is left out of balance, the more the cells will degrade and the loss of range will be permanent. If they get too far out of balance it may cause the BMS to shut down permanently or have other serious issues.

Sadly there aren't enough people out there with the knowledge and willingness to take on this task, and the amount of battery packs being produced is exceeding our ability to maintain them.

Michael Cox wrote: I wish there was a readily available ebike that had these well thought out accessories, but also had a considerably larger battery.

It's silly how the cells are standardized in shape and voltage and yet they come with proprietary connectors and sometimes oddball voltages for the entire pack. People don't buy their gas from the car manufacturers because the fuel is standardized. It would be great if a battery business came out to standardize things in the open working with ebike manufacturers, and bought back used packs to refurbish and resell. I'm sure there would be plenty of people willing to buy a cheaper used pack with a warranty to extend their range. If they had standardized mounting options you could choose a larger capacity pack.