Recent content by gudy

A long overdue reply on this thread ... So, I ended up solving my battery problem by re-soldering one of the "cell sense" wires, and flipping it upside down went mounted in the bike (before the battery would lay on top of these small wires). Not sure if the flipping helped, or if it was simply...

999zip999, yes the wife is ok. It looks like I'm going to have to open my battery, and I need some new heat shrink wrap for my BMS anyway. Would anyone know where I could buy some in the bay area? I've tried RC shops but they don't carry big enough sizes, I've tried Tap and Jameco electornics...

Replaced the BMS with the new one that Ping sent me ... and it didn't solve the problem :( Turns out one of the wire from battery had a bad connection somewhere, which I believe I found, re-soldered it ... and that didn't fix the problem either :( Anyway, I went to work with it today, started...

Fyi, My current workaround consists I'm not charging the battery completely ( I time my charges and then monitor till I get between 55 and 56 V) I guess that's not ideal for cell balancing, but it does trick while waiting for the replacement BMS.

This may be an unrelated question, but if I wanted to use a switch ( or a relay ) to disconnect my battery from the BMS ( instead of plugging and unplugging Anderson connectors, should I put it on the ground or positive wire ? While I can't use the bike I might as well finish building it the way...

Ping is sending me a replacement, but you're right that I could robable get away without the BMS for discharging... However I like the idea of having a short circuit protection, which I guess the BMS provides, right ? On the charging side is it the BMS or the charger which has the HVC ? Are the...

999zip999 I currently have a 9C 9x7 although I've made the delta/wye mod on a 9C 6x10 so I might switch when I get my battery problem solved, and fix some mechanical friction problems due to the added relays in the new hub ;) John, I really don't think it's a controller issue at this point, as...

I've replaced the controller back to the 35A one, and will keep things that way for now. Ping is goon to send me a replacement BMS, so hopefully I'll be back on my bike in no time. Till then, I have to figure out how I'm going to commute...

Well using the light triggered the BMS again, and it was back in this 44V to 57.5V oscillation mode... Disconnected one of the group of 8 wires coming from the cells, and plugged it back => same oscillation, tried the other one, same. Tried both BMS back to 57.5 V. Light back on,BMS triggered...

Did a full charge (didn't take long ) and then i measured all the cells except the first one because the only lead to measure it is from the ground, and it goes through the BMS which frocks up things... More on that later. so here are the voltages : 3.59 3.60 3.59 3.59 3.59 3.60 3.60 3.60 3.60...

Dogman, Thanks for your answers. You're always helpful. I'll try the slow discharge again, but if I remember correctly even my 10W lumenator triggers the Bms to shut down after a couple minutes. That's 0.2A at 50V... And why would the battery voltage constantly switch between 44V and 57V under...

No, I simply use Anderson pole connectors.

So, I did a quick video of what I'm seeing tonight. I topped my battery (only took a couple minutes) then I plugged the voltmeter into the charge port and plugged the controller. A few seconds in the video I turned the throttle, BMS kicks in and shuts down. As can be seen voltage quickly drops...

yep, the batteries are the 2.5V, and the BMS has the leds ... all LEDs are on after the charge, and the CA did read 60V when I initially plugged the battery to the controller after a full charge. But it seems that pulling power from the battery brings the voltage quite low. I usually charge...

Hi, I've have a few problems with my ebike lately, and I'm wondering if it wouldn't be a battery problem. About 2 weeks ago, ebikes.ca mailed me a 40A controller as they had originally sent me a 35A one, and I had ordered a 40A. After the swapping the controllers, I started seeing some strange...