Using 20s2 and hating low voltage alarm (BMS?)

[dnmun]

i had found one that offers the display but it is for 15S and only about 15A. i think the output current can be hacked up and the balancing current could be doubled by adding some more shunt resistor on the back side of this:

http://www.bestekpower.com/481v13spcmbmspcbforli-ionli-polymerbatterypack/BMS-D141.html

i think they will solder the extra shunt resistors on the back side if you specify them so the shunt balancing current climbs to 84mA then.

i am trying to figure out how to do the dr bass mod where i would add a small copper tab to the end of the pcb and solder on some irfb4110s to get the current capacity up to 50-60A.

 

[fechter]

i had found one that offers the display but it is for 15S and only about 15A. i think the output current can be hacked up and the balancing current could be doubled by adding some more shunt resistor on the back side of this:

http://www.bestekpower.com/481v13spcmbmspcbforli-ionli-polymerbatterypack/BMS-D141.html

Did they have a price listed for that one?

 

[dnmun]

when i order enuff of the BMSs at one time he is giving me a discount to a wholesale price of about $35 for the D141 but i have not asked about the data cable or what they are gonna charge me to add the shunt resistors to the backside which might be another $5-9. i am hoping the data comm cable will be less the $15 but have not asked yet. about to make a commitment to buy a bunch of BMSs from them. shoulda already done it since several people are waiting on me. sorry.

 

[fechter]

Price is right, but I'd suggest testing the crap out of one before getting quantity.

At one time I was thinking of getting a bunch of chinese BMS units and doing my own QC and modification to bypass the discharge FETs. I don't have time these days, but it would be great if you did something like that. I have a couple of Lipo packs with bad BMS units and would like to get a decent replacement. I'll buy some from you.