Releasing the Windscreen Washer Hose
Release the windscreen washer hose (the black rubber hose with a white band around it) from the white plastic clip located on a bracket just in front of the battery.

This will provide enough hose free movement to allow the hood to be raised to what LR terms 'the service position'.

Releasing the Gas Struts
While supporting the hood (which is mostly aluminium so it’s not very heavy) pop the bottom sockets of the two gas struts off their ball studs using a small crowbar or big screwdriver (use a rag to protect the paintwork).

Note: After the first strut is released the remaining one is not strong enough to support the hood so it is necessary to hold the hood with one hand while removing the second strut with the other hand. Alternatively a willing assistant makes it easier to handle.

Raising the Hood to the Service Position
Raise the hood to the near-vertical service position and secure it by rotating the metal holding straps that are attached to one of the hinge mechanism levers on both sides so that the hole in the end of the strap goes over and engages the holding spigot on the neighbouring lever.

Removing the Battery Hold-down Clamps
Use a 3/8" wrench to remove the two battery hold-down clamps and long screws.

Note: The replacement battery needs to have an indentation and lip moulded into the case near the bottom as this is what the battery clamps grip.

Attaching an External Power Source
Safety note: From this point onwards safety goggles should be worn as there is a risk of battery sparks/explosion regardless of how carefully the procedures are followed. Also desist from smoking near the battery.

Attach an external battery source to the jump start posts.

If using a jump start pack as illustrated switch it on after attaching both leads or if using a second battery and jumper leads attach the earth cable last.

As noted by earlier contributors this will maintain control system power and ensure that it is not necessary to re-set the windows, sun roof, clock and radio etc.

If an external power source is not available, or indeed if your battery is already fully discharged, the battery can still be changed but when this is the case RAVE notes:

CAUTION: After re-connecting the battery the steering wheel must be turned to full LH and RH lock (with engine running). This allows the DSC system to relearn the steering wheel position. Failure to do so will result in a variety of instrument warning lights been illuminated.

It does not mention the need to re-set the windows, clock and radio etc. but it would seem rather obvious that this would be the case and the procedures are noted in other previous posts.

Removing the Earth (negative) Cable
Safety note: Under certain conditions batteries can generate high volumes of hydrogen gas which can be ignited by nearby sparks, particularly while jump starting or removing the battery cables.

The risk is very low with modern sealed batteries but there is always the possibility that the casing could be cracked and leaking gases that would normally be contained and isolated.

Using a 3/8" wrench remove the earth cable first, in order to minimise the risk of sparks, and bend it as far away from the battery as possible.

Removing the Positive Cable

Remove the positive cable using the same wrench used for the earth cable and bend it as far away from the battery as possible.

Warning: Because the external battery source is connected to the jump start posts the terminal at the end of the positive cable will still be live so protect it from accidental grounding against the frame while moving the battery (which can cause major damage to the car's electrical and electronic systems) by inserting it in a rubber glove or wrapping it in a rag or some other insulating material.

Removing the Old Battery

The old battery can now be lifted out but note that it is quite heavy, about 24Kg/53lbs, and awkward to extract so two people may be required.

The height challenged will also benefit by using some steps or similar means to get into a lifting position directly over the battery.

Fitting the New Battery

After cleaning out any leaves and debris from the battery compartment fitting the new battery is the exact reverse of the above procedure.

Note that the earth cable should be connected after the positive cable is connected and petroleum jelly or a proprietary battery terminal compound should be applied to both terminals to inhibit corrosion.