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Hello,
I am running into a problem with Steps 6 and 7 under "When no close Qmax value is known:" on page 2.
I start step 5 and see that the QEN and VOK bits are set and start charging battery. After charging is complete, the FC bit never sets, VOK is cleared and MaxError remains at 100%.
I am using Chem ID 6113, 2ea1900mAh NiMH cells, and a BQ2002E as a charge controller. I see that the battery reaches full charge.
Is it possible that the trickle-charge function on the BQ2002E is causing this issue?
Thanks,
...kevin
Hi Kevin
Whenever you seal the device, there are two pairs of commands that need to be send to gain full access to the device. The unseal command and the full access command. If you check your register window, you will see that the SS flag is green, ( cleared) meaning you have sent the unseal command, but the full access flag (FAS) is red meaning you haven't sent the full access command. The full access default command is 0xffff, 0xffff if you didn't change it. Bqstudio has a button in the command list that allows you send command pair just with the click of a button.
thanks
Onyx