BQ34Z100-G1: When/how to use Load select 6 and User_Rate_ma?

Hi BatMan,

Load Select defines the type of power or current model to be used to compute load-compensated capacity in the Impedance Track algorithm

Set the device to Load Select = 6 and Load Mode = 0 and enter a value for User_Rate_ma in mA. This will allow the device to perform SoC simulations with the expectation of the User_Rate_mA using the constant current model.

If the value of User_Rate_mA is greater than the actual current draw, the device may underestimate the load-compensated capacity versus actual.

If the value of User_Rate_mA is less than the actual current draw, the device may overestimate the load-compensated capacity versus actual.

For example, depending on your load profile, it may be beneficial to set a high value for User_Rate_mA so the load-compensated capacity estimation assumes a 'worst case/near-worst-case' load at all times, thereby providing a lower SOC value but ensuring there is 'more energy in the tank'.

Sincerely,
Bryan Kahler

So when you use the term "load compensated capacity" are you referring the Peukert effect such that actual capacity is a function of load current? Or is this compensation due to other factors?

Thank you for your information!