Vi venter i ladekøen med mindre ruteplanleggeren viser en annen hurtiglader.

Med mindre means unless.

It introduces a condition that would change what happens in the main clause:

• Vi venter i ladekøen = this is the default situation
• med mindre ruteplanleggeren viser en annen hurtiglader = this is the exception

So the structure is:

• main clause + med mindre + exception

A very natural English equivalent is:

• We wait in the charging queue unless the route planner shows another fast charger.

Because Norwegian makes compound nouns by writing them as one word.

Ladekøen is built from:

• lade = charge
• kø = queue
• -en = the definite ending

So:

• ladekø = charging queue
• ladekøen = the charging queue

This is very normal in Norwegian. English often uses separate words where Norwegian prefers compounds.

Other similar examples:

• ruteplanlegger = route planner
• hurtiglader = fast charger

The -en is the Norwegian way of saying the for many singular nouns.

So:

• en ladekø = a charging queue
• ladekøen = the charging queue

Norwegian often puts the definite article at the end of the noun instead of using a separate word before it.

The same thing happens in:

• ruteplanleggeren = the route planner

So there is no separate word for the because it is already built into the noun.

Because Norwegian normally uses i kø for being in a queue or line.

Common expressions are:

• stå i kø = stand in line
• vente i kø = wait in line

So i ladekøen is the natural choice: literally in the charging queue.

Even though English often says in line, in the queue, or sometimes other phrasing, the Norwegian expression here is idiomatic.

Ruteplanleggeren means the route planner.

It is another compound noun:

• rute = route
• planlegger = planner
• -en = the

So:

• ruteplanlegger = route planner
• ruteplanleggeren = the route planner

Long compound nouns are extremely common in Norwegian, so learners often need to get used to spotting the smaller parts inside one long word.

Yes. Viser is the present tense of vise, which usually means show.

Here it can mean something like:

• shows
• displays
• indicates

In this context, the route planner is probably an app, navigation system, or similar tool, so viser can mean that it displays another charging option on the screen.

Examples:

• Kartet viser veien. = The map shows the way.
• Appen viser nærmeste lader. = The app shows the nearest charger.

Because Norwegian usually uses the simple present where English often uses the present continuous.

So:

• Vi venter can mean we wait or we are waiting
• ruteplanleggeren viser can mean the route planner shows or is showing

The context tells you which English translation sounds most natural.

This is very common in Norwegian. There is no separate everyday tense that works exactly like English am/is/are + -ing in most cases.

Because annen is the form used for another / a different with a singular indefinite noun.

Here:

• en hurtiglader = a fast charger
• en annen hurtiglader = another fast charger / a different fast charger

Andre is used in other situations, especially plural or definite contexts.

Compare:

• en annen lader = another charger
• andre ladere = other chargers
• den andre laderen = the other charger

So in this sentence, en annen hurtiglader is the correct form.

Hurtiglader is a compound noun meaning fast charger, usually in the sense of an EV fast charger.

It is made from:

• hurtig = fast
• lader = charger

So:

• en hurtiglader = a fast charger
• en annen hurtiglader = another fast charger

In context, this strongly suggests electric vehicle charging.

Yes. Med mindre introduces a subordinate clause.

In your sentence:

• Vi venter i ladekøen = main clause
• med mindre ruteplanleggeren viser en annen hurtiglader = subordinate clause

The clause after med mindre keeps normal subject-verb order here:

• ruteplanleggeren viser

If you put the med mindre clause first, the main clause must invert:

• Med mindre ruteplanleggeren viser en annen hurtiglader, venter vi i ladekøen.

So when the sentence begins with the subordinate clause, Norwegian puts the verb before the subject in the main clause:

• venter vi
• not vi venter

That is a very common Norwegian word-order pattern.