L'endoll de la cuina és millor per al carregador del mòbil.

Because Catalan usually shortens el or la before a vowel sound.

• el endoll → l'endoll
• la escola → l'escola

This is called elision. It works a lot like French l'.

Here, endoll is masculine, so the full form is el endoll, but before e- it becomes l'endoll.

Endoll is masculine.

So you would say:

• el / l'endoll = the socket / plug socket
• un endoll = a socket

That is why the sentence uses a masculine article at the beginning.

De la cuina means of/from the kitchen, and here it identifies which socket we are talking about: the kitchen socket.

Catalan often uses de + article + noun where English might use a noun directly before another noun.

So:

• l'endoll de la cuina = literally the socket of the kitchen
• natural English: the kitchen socket / the socket in the kitchen

This structure is very common in Catalan:

• la porta de la casa = the door of the house / the house door
• el cotxe del pare = the father’s car / dad’s car

The accent distinguishes és from es.

• és = is (from the verb ser)
• es = a reflexive pronoun, like oneself / himself / herself, depending on context

So in this sentence, és is the verb: is.

Example:

• És gran. = It is big.
• Es renta. = He/She washes himself/herself.

Millor means better, and it does not change for masculine/feminine or singular/plural.

So you can say:

• és millor
• són millor? → actually still millor, but with plural verb: són millor is uncommon stylistically; more natural might be són millors only when used as an adjective before/after nouns in some contexts, but as an adverb/comparative after ser, millor stays the usual form.

In this sentence, millor works like better in English:

• L'endoll de la cuina és millor... = The kitchen socket is better...

Catalan can leave the comparison implied, just like English:

• This one is better.
• Aquest és millor.

Because per a + el contracts to per al.

So:

• per al carregador = for the charger

This is a standard contraction. Similarly:

• per a la
• per als
• per a les

Learners also often notice per and per a. Very simply:

• per a often means for
• per often means by, through, because of, in exchange for, depending on context

In this sentence, per al carregador means the socket is better for the phone charger, meaning more suitable for it.

Del is the contraction of de + el.

So:

• de + el mòbil → del mòbil

This is extremely common in Catalan.

Examples:

• la porta del cotxe = the door of the car
• el carregador del mòbil = the phone charger

So carregador del mòbil literally means charger of the mobile, which in natural English is phone charger.

Catalan uses articles more often than English.

English commonly puts one noun directly before another:

• phone charger
• kitchen socket

Catalan usually prefers a structure like:

• carregador del mòbil
• endoll de la cuina

Also, Catalan often uses the definite article where English leaves it out, especially when the thing is understood from context.

So the article in del mòbil is normal and idiomatic.

Yes. Mòbil very commonly means mobile phone / cell phone in Catalan.

Depending on context, it can also mean mobile as an adjective, but in everyday speech el mòbil very often means the phone.

So:

• el carregador del mòbil = the phone charger

Yes, the word order is natural.

The basic structure is:

• L'endoll de la cuina = subject
• és = verb
• millor = complement
• per al carregador del mòbil = prepositional phrase

Catalan word order is often similar to English, but it can be moved around for emphasis.

For example, you might also hear:

• Per al carregador del mòbil, l'endoll de la cuina és millor.

That version puts extra focus on for the phone charger. But the original sentence is the most neutral and natural way to say it.