carlosebermudez
1 mW
- Joined
- Sep 11, 2020
- Messages
- 12
Hello!
I just finished my first e-bike build. I took an old mongoose MTB and bought a BBSHD and a 48v 30Ah battery from aliexpress.
After hooking everything up, and charging the battery to 100% for 7 hours. I noticed the 850c display showed only a 60% charge. I tested the output of the battery and it read 54.0 volts (AFAIK, it should be at least 54.5). So, I go for my first ride mixed PAS levels 1 thru 9 and it shuts off after 15km on PAS 2 (300w max). I recharged it, this time 12 hours and the display reads 62%, maybe it's balancing still, I thought. This time rode it harder, and it quit after only 10km. I took it for a ride a third time, charged it to 62% for 24 hours, this time I rode it very slowly on PAS 1,2, and 3, And only got 15Kms, again. The battery is shutting off at 50v, I rode it for a few minutes at around 49v but it quit as soon as I asked for a little bit more, it's reading 51v right now, but as soon as I take it out it quits after just 1 minute.
You can see four videos of it failing, I try to explain as best as I can with my crappy phone, but you'll get an idea.
I cannot return it, since shipping from my country will cost me the same as a new lower amp hour battery.
I'm sending these videos to Chamrider (aliexpress), they asked me for them, they are very slow to answer so that's why I'm posting on this forum. I think I'm gonna have to open it and take a look inside. Let's see what they say tonight after reviewing the videos.
In the meantime, if anyone has had an experience similar to this and is willing to help me out, I will very much appreciate that.
Thanks!
Here are some images of my display's readings when fully charged.
This is a typical ride around my neighbourhood:
These are the videos i took:
[youtube]IQUwMAmJC0I[/youtube]
[youtube]9anJ4vQK1Yw[/youtube]
[youtube]wQrdu3DWuNY[/youtube]
[youtube]jX-z0HBig6E[/youtube]
I just finished my first e-bike build. I took an old mongoose MTB and bought a BBSHD and a 48v 30Ah battery from aliexpress.
After hooking everything up, and charging the battery to 100% for 7 hours. I noticed the 850c display showed only a 60% charge. I tested the output of the battery and it read 54.0 volts (AFAIK, it should be at least 54.5). So, I go for my first ride mixed PAS levels 1 thru 9 and it shuts off after 15km on PAS 2 (300w max). I recharged it, this time 12 hours and the display reads 62%, maybe it's balancing still, I thought. This time rode it harder, and it quit after only 10km. I took it for a ride a third time, charged it to 62% for 24 hours, this time I rode it very slowly on PAS 1,2, and 3, And only got 15Kms, again. The battery is shutting off at 50v, I rode it for a few minutes at around 49v but it quit as soon as I asked for a little bit more, it's reading 51v right now, but as soon as I take it out it quits after just 1 minute.
You can see four videos of it failing, I try to explain as best as I can with my crappy phone, but you'll get an idea.
I cannot return it, since shipping from my country will cost me the same as a new lower amp hour battery.
I'm sending these videos to Chamrider (aliexpress), they asked me for them, they are very slow to answer so that's why I'm posting on this forum. I think I'm gonna have to open it and take a look inside. Let's see what they say tonight after reviewing the videos.
In the meantime, if anyone has had an experience similar to this and is willing to help me out, I will very much appreciate that.
Thanks!
Here are some images of my display's readings when fully charged.
This is a typical ride around my neighbourhood:
These are the videos i took:
[youtube]IQUwMAmJC0I[/youtube]
[youtube]9anJ4vQK1Yw[/youtube]
[youtube]wQrdu3DWuNY[/youtube]
[youtube]jX-z0HBig6E[/youtube]