Solar panel sets alarm off?

[ToyotaDan]

Okay so recently I bought a solar panel trickle charger for my battery but whenever I lock the car with it plugged into the cigarette lighter it sets my alarm off at regular intervals.  Does anyone know why this is happening?

[trentmeyer23]

Is it actually charging the battery or is it just draining it? 

Have you put a multimeter across the battery terminals to confirm it is charging?

[ToyotaDan]

Sorry I've been away. No but i will do today and get back to you 

[Rolex16233]

the cigarette light socket? does it turn off while key turn off? 

will it be able to charge into the battery system like this?

[Tony Prodigy]

4 hours ago, Rolex16233 said:

the cigarette light socket? does it turn off while key turn off? 

will it be able to charge into the battery system like this?

Don't the leads need to be connected directly to the battery while trickle charging ? I don't understand how you get DC voltage from solar panels through the ciggy light socket to the battery 🤥

The cigarette socket should only be active when you have the key turned to the "I" position anyway, so I don't get how this is supposed to work.
So with the ignition off, car locked, I can't see how this gadget will do what it claims to do.