Recent content by Carlosebermudez

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    Battery balancing problem

    I'm still chatting with them about it. The bike works well tho.
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    Battery balancing problem

    I bought the motor from Greenergy but from their aliexpress store. They screwed up the motor controller! LOL.
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    Battery balancing problem

    I agree with everything you said. Importing to my country takes an extra 2 weeks. So the dispute window is long closed. I'm not unhappy with seller at all! In fact if you want cheap batteries and don't mind an unexpected surprise. They offered to send me me a new battery, I just have to pay...
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    Battery balancing problem

    The seller CHAMRIDER is sending a whole new battery. Now the issue with the 60% charging on the display is because the seller on aliexpress put a 52v controller on my 48v casing. Can you believe that?! I live in venezuela so returning things is very expensive by dhl. So... I'm screwed on...
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    Battery balancing problem

    Yes I have! After opening the battery I discovered one of the series was reading 38v. So I took an old phone charger that matched the voltage I needed. And it took about 24 hours to bring it to a working voltage. Since the battery is so big I've had difficulties discharging (rain/work) it so I...
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    Battery balancing problem

    Already did.
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    Battery balancing problem

    I made some of videos of it failing. Sorry for the quality of my modest 2 year old Motorola G5 Plus. I reset the Trip meter today, so that's all I've gotten out of it. If I ride it really slowly at PAS 1 I can do straights, but forget about throttle. It's now showing a Range left of 10 Km...
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    Battery balancing problem

    LOL didn't read that part! I'll wait to see that the manufacturer has to say. But I see myself opening this thing and testing. Maybe it's a cold solder spot or loose wire.
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    Battery balancing problem

    This is the BMS I'm looking at: 13S lithium battery BMS 48V smart BMS bluetooth 485/UART ternary 18650 polymer protection board intelligent BMS https://a.aliexpress.com/_BPPzBI
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    Battery balancing problem

    The battery is a 13s9p. I've been looking at some smart BMSs, they're around $50. I would have to open it and test each cell group to see what's going on. Let's see what the manufacturer says tonight.
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    Battery balancing problem

    Now, what if a cell group is heavily unbalanced. Let's say 1 whole volt. How can I balance it? Will switching to a smarter BMS do the trick? Something I can program? I've seen some that show each cell on a computer or Bluetooth app. I noticed that I got it to go below 49v after letting it sit...
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    Battery balancing problem

    I'm waiting for a response from the manufacturer. I will do a bucket test tonight, but when I throttle it by itself it only shows 20W being used. So it will be a long night. The problem with returning it is that Aliexpress only allows me to open a dispute 15 days after delivery. Thats how long...
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    Battery balancing problem

    Since I don't have a GoPro it is very hard to video it. Sending it back it's too expensive from my country. Do you think it's a faulty battery? I'm riding in a very hilly area and roads suck. Does the road conditions affect the battery that bad? All I got out before shutdown was 17km out of the...
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    Battery balancing problem

    So I took it for a ride this morning. Didn't charge it last night so I started the ride at 52v. I rode a PAS 1 which gave me a max watt output of 350w. On a steep hill I switched to PAS 2 and the voltage dropped to around 49.5 for about a minute. It didn't shot off. On a straight at a constant...
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    Battery balancing problem

    Yes, I'm aware of how the 1-5 vs 1-9 works. I only used the throttle for those few seconds to stay with traffic. I'm monitoring the watts and it never went above 750 for a brief second. All the ride was done between 250w and 550w. Still raining.