Confused on the Bestech Power D131 BMS

[markz]

Number Dont Match Up
HCX-D131 website states http://www.bestechpower.com/74v20spcmbmspcbforli-ionli-polymerbatterypack/PCM-D131.html
80A max charging - 80A max discharging - 84V
emailed pdf file states 20S-50A max charging and 50A max discharging 84V Charging Voltage

Couple Questions.....

Cant charge at 80A or 50A anyway. But discharging rate difference 50A and 80A?

So even though its 84V it drops down to 74V taken off charger?

Do I even care about discharging amperage when buying a BMS?

Does the BMS control voltage to controller when I am riding, meaning is the BMS hooked up to the controller when riding?
And hooked up to the charger when charging?

or is the BMS only used in the charging, hence dont matter if its 50A or 80A charging rate?

 

[999zip999]

You want to charge at 80amps 6,000 plus watts ? How will you be doing this ?

 

[markz]

Said I cant.
Isnt 50A too small of discharge?

 

[dnmun]

the D131 is 50A max charging current and 80A max continuous discharge with 120A overcurrent limit.

 

[markz]

OK so this D131 BMS is the one I should buy?
For the mxus3000w and 74V 20S. Yesterday, I just bought the Lyen 18FET Low RDS MOSFET Overclocker Ready controller $199, waiting to recieve it in the mail.

About to put an order into Hobbyking for $450.
10x 4S 5Ah Batteries, Powersupply, wires, solder iron, solder, stand, shrink wrap, balance leads 4Sx6,4Sx2, extensions, connectors, cell log.
Forgot the third hand. Damn, got to input everything for the 3rd time.
Already got 5x batteries, imax charger.

Will put my order in to Bestech Power.

 

[friendly1uk]

You charge through the bms so that it may stop the charging
You discharge through the bms so that it may stop the discharging

Power in and out of your cells is always via the bms, so it is always in control