Ford Galaxy Diesel 2009: Steps for Battery Replacement and Engine Compartment Dismantling

My friends asked me to replace the battery in their Galaxy because it had fallen completely.
I used to look under the hood once to recharge their old batteries and from what I remember, the battery protrudes only half. I tried to look for some videos on YT but there is none, from which I conclude that this is not some great work.
But if I can ask for a few sentences a person who already has it behind what should be dismantled so that unnecessarily half of the engine compartment not gutted.

To remove the battery in Ford Galaxy 2006-2015 you must first remove the air filter.
Apply buffer power supply to the electric installation during battery replacement,
then you won't have problems with the radio, clock, electric windows, engine adaptations, etc.

Today I'm going to do it. I will make a photo report and post it on the Forum. Thanks again.

Battery already replaced. I allow myself to post the instructions below.

As you can see, access to the battery is mean. Unscrew the upper cover of the air filter, there are screws. To get to all screws you need to remove the upper engine cover. Then detach the cable from the flow meter (I think). Slide the red dinks up and the plug comes out. Then loosen the clamp and remove the upper part of the air filter and then its base. The base sits with three pins in special sockets and comes out quite easily, you only need to maneuver to extend the air suction tube.



Then remove the plastic battery cover. Theoretically, it should tilt up, but in this case somehow did not want and needed a bit of strength persuasion. The vehicle owner was at home at that time



Under the cover there is a battery mounting with a 8mm hex bolt. After removing it, unscrew and remove the positive clamp. We use a spanner or 10mm socket, because the screw head is facing upwards. Here, a good uncle advises that you should always start disconnecting the clamp from the mass (i.e. negative). This is due to the fact that we usually use a flat key for this, which we can accidentally touch to the mass of the vehicle, which in the case of mass clamp do not lead to any pyrotechnic effects, and after unplugging it positive we can already touch the mass as much as we want - the circuit no longer will.
Unfortunately, this car cannot do this and it is recommended to take special care when maneuvering the key with a positive clamp and use (if we have) a 10mm socket on a so-called "screwdriver" knob.
After removing the positive clamp, slide the battery out of its socket to reveal the negative clamp and after removing it, the battery can be removed from the car.



After inserting a new battery and starting the engine, enter the radio code, set the clock and teach the windows to close completely.