Double lock system

[weather0527]

hi, im new to this forum.
well actually surfing around here for a while by never register. hehe

i have a question with my '90 535i.
the car's battery is dead, totally no power at all.
not even enough for the doors unlock.
the only way to start my car is get the battery charged,
but the battery is located under the back seats,
the front doors are able to be open manually, but since i double lock the doors, the back doors are not able to be open from the inside.
is there any ways i can open the back doors manually in order to get the battery charged?

thanks alot.:)

[PaulJ]

If you have a front door open, release and open the hood. Remove the "+" terminal cover (left side next to the fuse box), connect the charger to it and a convenient ground (shock mount). Charge away. It is not necessary to access the battery to charge it.

Paul