I was under the impression that the battery maintainer or cigarette lighter trick would work... ??
Is the car on jack stands? If the emergency release wire/cable hasn't been moved, you may be able to get to it from the passenger side wheel well.
Perhaps this thread will help. See p2.
Another argument for relocating the emergency frunk cable to the tow hook port.
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2000 Boxster S, 6 speed, Sport Package, Litronics, LED tail lights, LNE IMS-B, OBC, Skybreaker wind deflector, Arctic Silver/Graphite Grey
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