
aufladen
to charge
To supply a battery or an electronic device with new electrical energy.
Ich muss mein Handy aufladen, der Akku ist fast leer.
I have to charge my phone; the battery is almost dead.
to charge / load
Loading your saved state.

to charge
To supply a battery or an electronic device with new electrical energy.
Ich muss mein Handy aufladen, der Akku ist fast leer.
I have to charge my phone; the battery is almost dead.

to load
To load goods, luggage, or a heavy item onto a vehicle or means of transport.
Die Möbelpacker laden die Kisten auf den LKW.
The movers are loading the boxes onto the truck.

to take on
To take on a difficult task, responsibility, or burden.
Du solltest dir nicht zu viel Arbeit aufladen, sonst schaffst du das nicht.
You shouldn't take on too much work, otherwise you won't manage it.

to charge
To imbue something with a particular meaning, emotion, or atmosphere.
Durch die tragische Geschichte ist dieser Ort emotional stark aufgeladen.
Because of its tragic history, this place is highly emotionally charged.
'Aufladen' (to charge/load) is a separable verb whose prefix 'auf-' goes at the end in a main clause. The base verb is 'laden' (to load/charge). The prefix 'auf-' can literally mean 'on top' (furniture) or metaphorically 'into' (energy).
Ich lade schnell mein Handy auf.
I'll quickly charge my phone.
In a technical context, 'aufladen' (to charge) is almost always used with electronic devices or their energy storage units. Typical phrases are: 'das Handy aufladen' (to charge the phone), 'den Akku aufladen' (to charge the battery), or 'eine Prepaid-Karte aufladen' (to top up a prepaid card).
Kannst du bitte deinen Laptop aufladen?
Can you please charge your laptop?
In this meaning, it is about loading vehicles. The verb is often supplemented by a location phrase with 'auf' + accusative, e.g. 'etwas auf einen LKW aufladen' (to load something onto a truck).
Die Arbeiter laden die Kisten auf das Schiff.
The workers are loading the boxes onto the ship.
When taking on responsibility, a fixed structure is used: 'sich (dative) etwas (accusative) aufladen' (to take something on oneself). The dative pronoun shows who is taking on the burden.
Lade dir nicht zu viele zusätzliche Aufgaben auf!
Don't take on too many additional tasks!
This figurative meaning is often combined with adverbs like 'emotional' (emotionally), 'symbolisch' (symbolically), or 'negativ' (negatively). The subject is usually a situation, a place, or a topic.
Die politische Debatte ist stark emotional aufgeladen.
The political debate is highly emotionally charged.
to invite / load
Einladen and aufladen both refer to loading luggage or goods onto a means of transport. Einladen emphasizes movement into a vehicle or container. Aufladen is appropriate when the load is placed onto a means of transport.

Wir laden die Kisten auf den Anhänger auf.
We are loading the crates onto the trailer.
Wir laden die Koffer in den Kleinbus ein.
We are loading the suitcases into the minibus.