I would like to power 12V 32W air mattress pump from power bank. Power bank output is 5V and this is not enough (correct me if I'm wrong)
I see two ways:
- Using DC-DC converter. I found one XL6009E1 in local shop. It is max
10W. So, I think I need several of them connected parallel to
power bank and pump. Will it work?
- Use two power banks connected in serial way. In this case I suppose to get 10V. What if these power banks are different models?
Which method is better? Where I need to pay attention in both methods?