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BQ34110EVM-796: BQ34110 Time to Empty

Ronald Blem

Prodigy 200 points

Part Number: BQ34110EVM-796
Other Parts Discussed in Thread: BQSTUDIO

I am using the BQ34110EVM with a 12V 7.6 AH Lead Acid battery. I have completed the 6 discharges and the CEDV calculator tool and transferred values over to BQS. When i begin a discharge however the Time to Empty remains the default value of 65535. What parameters am I missing from Data Memory?BQStudio.gg.csv

over 6 years ago

0 Batt over 6 years ago

TI__Mastermind 42535 points

Hi Ronald,

When you are in relax mode, time to empty will remain at 65535. However, when you start dsg that should be estimated.

0 Ronald Blem over 6 years ago in reply to Batt

Prodigy 200 points

Thank you Batt,

Now when I turn on the load the Average Time to Empty drops to 0. Any suggestions?

Thanks,

Ron

0 Batt over 6 years ago in reply to Ronald Blem

TI__Mastermind 42535 points

It will return time to empty based on present capacity and rate of dsg.

0 Ronald Blem over 6 years ago in reply to Batt

Prodigy 200 points

Correct, but my battery is fully charged and I am pulling a 1A load. But my time till empty is 0?

0 Batt over 6 years ago in reply to Ronald Blem

TI__Mastermind 42535 points

If your remaining capacity is 0, then your TTE will also be zero. Your TTE is remcap/rate of dsg.