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crwdns2944351:0crwdnd2944351:0Dell XPS 13 Battery Replacementcrwdnd2944351:0crwdne2944351:0

crwdns2933797:0Ivan Kellenbergercrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Adam O'Camb

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Conclusion
Plug in replacement battery, then plug in the power adaptor, too. If notebook neither charges nor does boot, unplug battery and charger, then remove and re-install coin-cell battery (CMOS, RTC; see [https://www.dell.com/support/manuals/de-ch/xps-13-9350-laptop/xps-13-9350-laptop/procedure?guid=guid-2de3d2e1-5be0-4935-8f50-e74b5b52d01c&lang=en-us|guide of Dell]).
To reassemble your device, follow these instructions in reverse order.
[https://www.dell.com/support/manuals/de-ch/xps-13-9350-laptop/xps-13-9350-laptop/procedure?guid=guid-c8320c31-bf58-4322-b880-8e23bd85e75e&lang=en-us|Original guide of Dell].