Cell connecting problem with LTC6813-1

Hi, 

A 18S board design with LTC6813-1, but mounting for 14S use.

The circuit for cell connecting is as below. Because for 14S only, some 0 ohm/0603 are used to configure. 

Bn for actual battery cell connect input through CON2 and CON1.

In board test stage using power supply to simulate cell voltage input, everything is  OK.

But when connecting actual battery cell stack, R7 (0 ohm/0603) may be damage (Hi-R, open ~3 out of 40 DUT). 

Could you please review the circuit and give me advice.

Thank you!


Sean


circuit upload
[edited by: altis0510 at 8:08 AM (GMT 0) on 21 Dec 2018]