BQ27426: Inaccurate battery level

switch

Expert 2915 points

Part Number: BQ27426
Other Parts Discussed in Thread: GPCCHEM

Tool/software:

Hi，

The discharge will suddenly drop from 70% to 50%. What is the reason for this?

Currently, the TI database uses the chemical ID 5377. Could you please check if this ID is appropriate?

1 month ago

0 Robert 1 month ago

TI__Genius 16426 points

Hello,

You cannot program a custom chemID onto the BQ27426 fuel gauge. For the BQ27426 you can only choose between one of the three preprogrammed chemIDs.

Regards,

Robert.

0 switch 1 month ago in reply to Robert

Expert 2915 points

Hi Robert，

May I ask which three ChemIDs are they?Which one do I need to choose as the most suitable?

0 Robert 1 month ago in reply to switch

TI__Genius 16426 points

Hello,

The image below taken from the bq27426 Technical Reference Manual shows the three chemIDs you can select for this gauge. In order to determine which of the three chemIDs is the best match, you can use the GPCCHEM tool.

Regards,

Robert.

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BQ27426: Inaccurate battery level