Recent content by mark133

The components are as follows: 13DG1: MM3513D01NRH/SOT-23-5 (balance IC) 3Q66: it's IC#R5460N213AD

Hi football, I did have what I thought was an issue with the BMS as in I had 2 cells destroyed on the same channel ( battery no.2) to start with I thought the BMS was taking my Lifepo4 cell over 4v and killing it. Since then I have risked another cell and monitored cell 2 while charging and can...

I think I should explain I have damaged 2 cells now on the same channel (battery No.2) reading 0v. I believe the BMS is taking the cell over 4.0v and killing it as it happens very quickly when on charge for a very short time. I don't believe it is draining the cell as a 20ah cell would take a...

Hi I wonder if anyone can identify the 2 following components marked with the following: 3Q66 and 13DG1 TIA

Yes the cell was charged to equal the voltage of the other cells. Going to take a look at the BMS at a component level for that channel on Monday, have tried to contact Bestech who made the BMS but they are on holiday till the 25th of February.

So after some investigation I found there was a dead cell sitting at 0.00v. Stripped the bad cell out the pack and replaced it with new cell, charged the pack using the BMS and went to bed. Took the bike out for a 7 mile run without the BMS connected came home put it back on charge and thought...

One more thing that bugs me slightly is how sudden the power kicks in when I twist the throttle, is there a setting in the CA v2.4 that softens the initial power? Thanks Ps I did look in the manual but wasn't sure and didn't want to change anything before asking

So the bike worked fine with no BMS, I will try and rig something up to check each cell when under load and swap the culprit out Thanks

Thanks amberwolf, the tabs were full tabs, I am going to try the bike less the BMS a little later and go from there, fingers crossed it the BMS tripping out Thanks Mark

Thanks

I hope the battery is what I think it is as I built it myself and the A123 cells were supplied by OSN power (could be fake)

I did set the controller to 20amps this morning and the CA read max amps at 42amps but it still cut out. I have now disconnected the BMS and wired the battery direct to the controller and will see how it goes Again it's pouring down with rain and better weather is due tomorrow so will try it...

Is it okay to run my bike with out a BMS and rely on the CA & controller to control the LVC and Max amps? I would obviously use the BMS to charge the battery. Thanks Mark

Okay charged the bike up to 93.6v off the charger took it for a spin and it cut out when set at 55v and the CA read Vmin 79v so I assume it's not the LVC setting. Another observation is that once its cut out the only way to reset the bike is to disconnect the battery from the BMS, maybe a...

The bike cuts out with the CA disconnected, I did set the LVC in the CA to 55v the same as the controller, I read confusing lowest voltage figures for this type of battery some say 2.30v yet the data sheet says 2.00v. Also when i purchased the controller from Edward Lyen he sent me the...