ronaldvidnphoto
1 mW
Hello all!
I built my bike a year ago and never really did a committed range test. About a week ago I decided to take the bike out to Central Park and loop it throttle only until the battery died. It ended up being a much shorter test than I thought it would be. Any input on fixing my issues would be greatly appreciated.
In short: My battery won't charge past 56.6v and the bike cuts off at 54.5-.9v. (roughly 10 miles, throttle only). The bbs02 controller LVC is set to 41v.
Long version:
1.The first thing I noticed was the battery only charged to 56.6v when it used to charge to a full 58v. To view the volts with my display (sw102) you have to go into the menu, so this isn't something I regularly checked. I'm not sure when the drop started to happen.
2.I started my first run and the battery ended up dying after only about 10 miles (~1.5 laps). I came to this form and saw mention of battery imbalance and decided to try for a second lap after a long charge.
3. I put the battery back on the charger for 15 total hours. 12 straight and then two smaller stints when I was around. The battery still only got to 56.6v. I also ordered a programming cable to see what the controller specs were set at. The controller was factory set pretty well based on guides I found online, so that ended up not being the problem.
4. Today I went for my second ride. It was much cooler and even got a bit of rain. The bike went a tad further but ultimately died again at ~10miles. I did a quick 2min jump with the charger so I could get the display back on and the battery was still at about ~54.5-.9v. I didn't check this the first time, but all things considered, I'm assuming it was the same. In the past, I've had it cut off at around 52v.
Exact parts:
52v 15ah Samsung 30Q Lithium-ion E-Bike Battery
Link: https://bicyclemotorworks.com/product/52v-15ah-samsung-30q-lithium-ion-e-bike-battery/
Bafang BBS02B 48V 750W w/ SW102 display.
Controller info: Manufacturer HZXT, Model SZZ9, Nominal Voltage 48-52v, Max Amp 25amps, Hardware V1.1, Firmware V2.0.1.1
https://www.aliexpress.com/item/32852257691.html?spm=a2g0s.9042311.0.0.603f4c4dopcsOQ
Remote on/off Solid State Switch (placed between battery and controller)
https://lunacycle.com/remote-on-off-solid-state-switch/
Currently, the bike is back on the charger, waiting for my next run at the park.
I built my bike a year ago and never really did a committed range test. About a week ago I decided to take the bike out to Central Park and loop it throttle only until the battery died. It ended up being a much shorter test than I thought it would be. Any input on fixing my issues would be greatly appreciated.
In short: My battery won't charge past 56.6v and the bike cuts off at 54.5-.9v. (roughly 10 miles, throttle only). The bbs02 controller LVC is set to 41v.
Long version:
1.The first thing I noticed was the battery only charged to 56.6v when it used to charge to a full 58v. To view the volts with my display (sw102) you have to go into the menu, so this isn't something I regularly checked. I'm not sure when the drop started to happen.
2.I started my first run and the battery ended up dying after only about 10 miles (~1.5 laps). I came to this form and saw mention of battery imbalance and decided to try for a second lap after a long charge.
3. I put the battery back on the charger for 15 total hours. 12 straight and then two smaller stints when I was around. The battery still only got to 56.6v. I also ordered a programming cable to see what the controller specs were set at. The controller was factory set pretty well based on guides I found online, so that ended up not being the problem.
4. Today I went for my second ride. It was much cooler and even got a bit of rain. The bike went a tad further but ultimately died again at ~10miles. I did a quick 2min jump with the charger so I could get the display back on and the battery was still at about ~54.5-.9v. I didn't check this the first time, but all things considered, I'm assuming it was the same. In the past, I've had it cut off at around 52v.
Exact parts:
52v 15ah Samsung 30Q Lithium-ion E-Bike Battery
Link: https://bicyclemotorworks.com/product/52v-15ah-samsung-30q-lithium-ion-e-bike-battery/
Bafang BBS02B 48V 750W w/ SW102 display.
Controller info: Manufacturer HZXT, Model SZZ9, Nominal Voltage 48-52v, Max Amp 25amps, Hardware V1.1, Firmware V2.0.1.1
https://www.aliexpress.com/item/32852257691.html?spm=a2g0s.9042311.0.0.603f4c4dopcsOQ
Remote on/off Solid State Switch (placed between battery and controller)
https://lunacycle.com/remote-on-off-solid-state-switch/
Currently, the bike is back on the charger, waiting for my next run at the park.