Hi. I am making a portable Raspberry Pi 3 model b+ laptop. I have a Raspberry Pi and an lcd driver board. The model for the board is: m.nt68676.2a
It uses a 12V 3A power adaptor. I use a cana kit 5V 3.5A power adaptor. I want to use a rechargeable battery to power both of these. I'm pretty new to electronics so I'm sorry if this is a dumb question but I was wondering if there was a specific battery that would power both of these and not immediately drain its battery. Thanks.