Recycled Laptop pack- Charge Controller Setup

I set my CC to "LI", but I am concerned with the default charge parameters shown in the photo. Are these acceptable parameters for these 18650s? If not, what should these voltages be set to? I can only change the parameters with the white background. Thanks for the help.

You don't say 3s or 4s (e.g. number of 18650s in serial). If 4s, then these values are within specs (4 * 4.2v = 16.8v max). If 3s then no good (3 * 4.2v = 12.6v max)

OffGridInTheCity said:

You don't say 3s or 4s (e.g. number of 18650s in serial). If 4s, then these values are within specs (4 * 4.2v = 16.8v max). If 3s then no good (3 * 4.2v = 12.6v max)

Click to expand...

My bad...3s pack. CC only allows to select a 12v or 24v.

Hi volts - e.g. High Disconnect, Charge Limit, Float etc should not be higher than 12.6v.... maybe you have control over the charger and can make sure you don't go over 12.6v?
Low volts - e.g. Over Discharge you could go down to 10.0v (3.3v * 3 = 9.9v), Low Alarm - maybe 10.5v.

BUT - you said you can't change the grey values?...

This is yet another example - e.g. 3s is to low of a range and 4s is too high of a range - why 18650(s) are not the best choice for 12v nominal batteries. 4s LifePo4 would be much better

Thanks! Had to change battery type to "USE" and was able to change all the parameters. New settings for now until I can learn to optimize settings for these specific cells. Thanks for those numbers will integrate into my settings!

EDIT: Charge Limit Voltage has to be set to 12.7. If set to 12.6 it keeps shutting down current to the cells..

Getting over voltage error on charger controller. Pack is only at 12.0v

1xAA said:

Thanks! Had to change battery type to "USE" and was able to change all the parameters. New settings for now until I can learn to optimize settings for these specific cells. Thanks for those numbers will integrate into my settings!

EDIT: Charge Limit Voltage has to be set to 12.7. If set to 12.6 it keeps shutting down current to the cells..

Click to expand...

Placed a 60a(charge)/100a(discharge) BMS with these parameters and now getting high voltage error on the renogy Rover 40. Anyone know what my charge settings should be for this pack? Thanks for any help. The problem these settings in my previous post are causing is current cutoff.