BqEasy Learning Cycle Issue BQ27541 EVM

kelly muldoon

Other Parts Discussed in Thread: BQ27541

I am having a problem with the learning cycle within bqeasy. I am using EV2300 and the bq27541 EVM. I am characterizing a Samsung battery with part number ICR18650-26C SDI. I thought I had finished number 3 on the Cycle tab (Charge to full, Wait 2 hours) but, I get a pop-up error as follows:

Here is what I have on the data RAM page and yes I see that the FC flag is not set. The charger I am using indicates that the charging is complete. What have I done wrong and what do I need to change? Please, more details the better as I am new at this technology.

over 14 years ago

0 kelly muldoon over 14 years ago

Prodigy 100 points

Here is the file for this post,

Thank You

3302.screens.doc

0 Tyler Pate over 14 years ago in reply to kelly muldoon

TI__Expert 7025 points

Kelly,

Just wanted to let you know that I am following up on this post. If you haven't seen these documents, they may be of some help:

bqEasy questions/creating golden image: http://focus.ti.com/lit/ug/sluu278/sluu278.pdf

New to multicell Impedance Track (IT) gauges?: http://www.ti.com/litv/pdf/slua421a

Best, Tyler

0 dMax over 14 years ago

TI__Genius 14985 points

The gauge doesn't care if your charger thinks the battery is full, it only considers the battery to be full and will set the FC (full charge) bit when it meets the conditions described in the datasheet for charge termination. Probably your charger is terminating charge at a current level higher than the setting you are using for Taper Current in your gauge DataFlash. Make sure to set Taper Current to a larger value than where the charger shuts off.

Power management

Power management forum

BqEasy Learning Cycle Issue BQ27541 EVM