Recent content by hsors

Yes, it's most likely the battery which is I bought on AliExpress: https://www.aliexpress.com/item/48v-triangle-e-bike-lithium-battery-pack-48v-20ah-electric-bike-battery-Free-customs-duty-48V/32785985560.html?spm=a2g0s.9042311.0.0.3bba4c4d0BI5GU. Not sure it's easy to find the defective part on...

Yes, the display is turning off. Your thought is that if it was the motor controller that would switch-off the motor, the display would remain on because the motor controller has no mean of turning off the display, right ? Thanks much.

It started when I was riding at full speed (24A current) by a very hot day (35°C) after the bike was left a full day under the sun. I switched off and on and the bike started again. I thought it was a temperature sensor that did cut the current because of excess heat. But after the...

The buttons are not the issue. Sometime the unit would not switch on... (may be related to the button, though) Thanks, -Henri

I am still riding a pretty old e-bike which uses a Bigstone C300 LCD display which needs to be changed. Apparently this item cannot be found any more in any store. Any idea about a compatible one ? Thanks much -Henri

Very clear and lightening, thank you !

Where can I find reliable and precise information on how a BMS like this one is working: https://bmsbattery.com/bmspcm/323-16s-lifepo4-bms-battery-management-system-bms-pcm.html (ideally with circuit diagram) - What does it do during charge (it is recharging fist at CC then at CV and if yes how...

I know it needs to be charged at constant current first, up to a certain voltage level and then the charge has to be completed with a contant voltage cycle. My question: where can I find an affordable power supply able to provide constant current ? Thanks, -Henri

That makes sense, thank you ! Now do you know if the BMS can manage the charge of a pack with two cells at 0V and the others at 3.x V ? Thanks again, -Henri

I understood that charging a LiFePO4 battery is not simple (need first to charge with constant current up to a certain voltage, then switch to contant voltage). Not an easy process... Isn't the BMS supposed to do that ? Will it manage each cell individually and treat each one according to its...

The BMS I am using (from BMSbattery) - photo here below - has only P- and B- outputs on the board and a connector (second photo here below) with 16 outputs to be connected to the 16 cells. There is no documentation with the BMS and BMSbattery technical support (tech@bmsbattery.com) doesn't...

Thanks for the hint. In the meantime I have disassembled the pack and measured the voltage of each cell. The first and the last cell of the pack are at 0V. And when I plug to the charger, there is only half a volt. This seems to confirm the BMS is out of work, right ? (it's brand new...). Or the...

I have just finished assembling a new battery pack for my e-bike. This is a pack of 16 Headway 40152 LiFePO4 cells of 15Ah with a 16S BMS from BMAbattery. Discharge Current : 30-60A. This issue: the pack doesn't behave like a LiFePO4 battery pack. Voltage drops progressively during the discharge...

I have a Bafang BPM2 48V500W with an S12S controller from BMSbattery and a S-LCD1 E display. Here is what happened (intermittently and then permanently). When riding, the bike would go full speed regardless of pedaling or not, and regardless of throttle (frightening!!). Only the brakes could...

Thanks for the hints. BMSbattery offers to ship a free controller but they said they can ship the S12P (for sensor less motors) whereas I need a S12S for a sensor motor (Bafang BPM). Still talking to them to try to understand what's behind... To Dnmun: thanks for the offer for help. Not sure at...