I have 12V Solar Panels and 12V batteries. But my laptop needs 17V to recharge. I could attach 2 12V batteries in series, and I would get a 24V current. And I could use this to recharge the laptop.
But then I need to recharge the battery. So, suppose I use two different solar panels for this:
Can I attach each single 12V battery to a solar panel while they are also attached in series between them?