CITROEN Grand C4 PICASSO Owner's Handbook Manual page 136

Comfort
Torch
This is a removable lamp, fitted in the side of
the boot, which can be used to illuminate the
boot or as a torch.
134
Operation
This torch operates with NiMH type
rechargeable batteries.
It has a battery life of approximately 45 minutes
and charges while you are driving.
Observe the polarities when fitting the
batteries.
Never replace the rechargeable
batteries with single-use batteries.
Use
Extract the torch from its location by pulling
it from the front.
Press the switch, located on the back, to
switch the torch on or off.
Unfold the support, located on the back, to
set down and raise the torch; for example,
when changing a wheel.
Storing
Put the torch back in place in its location
starting with the rear.
If you have forgotten to switch off the torch,
this switches it off automatically.
It the torch is not engaged correctly, it
may not charge and may not come on
when the boot is opened.