Not sure what you are trying to do here, are you trying to run a fan using the tablet battery? Check the output on the battery vs the power needs of the fan you want to use. If they are different you will need to use some electronics in between them to match the voltage and amps the fan needs. It's probably more work than you want to do, but feel free to research things. https/www.quora.com/What-is-a-voltage-transformer-and-a-current-transformer
Not sure what you are trying to do here, are you trying to run a fan using the tablet battery? Check the output on the battery vs the power needs of the fan you want to use. If they are different you will need to use some electronics in between them to match the voltage and amps the fan needs. It's probably more work than you want to do, but feel free to research things. https/www.quora.com/What-is-a-voltage-transformer-and-a-current-transformer