Recent content by carlosebermudez

So I decided to hack the battery and charge it like the guy did on the video. It's not that difficult, but I'm gonna have to babysit the charge all night. The plan is to charge the 13th cell as high as possible, as close to 4.19v, then ride the bike to discharge the pack. After that, I'm going...

The video shows it being done to a RC-Car type battery. Not sure how it would translate to these. I do have a vape battery charger... If I had to take it all apart I guess I could use that. It's 12v 1amp. DP1-VBNJmsg

Nope, can't change it on the 850c. Since I already know the problem I would like to fix it.

The pack is brand new, I cannot return it cuz DHL charges me $300 to ship it. I'm pro changing the BMS to a smart one. LOL I do have basi electricity knowledge, I have a hard time understanding complex cirquitry like what to test for on a BMS board, or how to bypass it to charge directly that...

Quick update. Talked to the Manufacturer and he had me opening it and shooting some video of me testing the BMS. There's definitely a bad bank. So... I understand that a 3.5v battery CAN be saved. And I want to prepare myself for what's coming, which is making it work by learning how this...

My bad! https://bit.ly/3hnc7mA this is the correct link.

https://es.aliexpress.com/item/32965186267.html

Thanks for all the coments! I have no idea what SoC% is, or how to test it, and I don't have a wattmeter. :D . I've been watching some youtube videos, and a couple of people had a similar problem, it turns out there's a way to bypass the LVC on the battery by soldering the ground wires and...

Nope, no switch. The lable says. Model DL-240W AC Input: 100-120v DC Output: 54.6v 4A The longer I've ever left it on is 24 hours. I thought it would balance the cells, perhaps one bank was off and needed time to adjust. I've also left it siting with the Key On to see if it would balance...

I tested the charger and it outputs 54.5v when the fan is off. Is that what it's supposed to measure?

I tested the battery and the display with a multimeter. They read 54v on the battery and 53.9v-54v on the display. The supplier Chamrider has pretty good reputation in aliexpress.com, that's why bought from them. The cells are 3400mah according to them. The battery is 13s9p

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...