Beginner with battery tech here, so forgive my naivety :)
I'm making a portable bluetooth speaker, and am wondering about the best battery solution to use.
The amp needs 60W max, and accepts 12-24V. I would like the charging circuitry to be contained inside the speaker so that I can simply connect a laptop PSU (19V) to a jack in the back to charge it. Ideally would like a runtime of at least 2 hours @ 15W.
At the moment I'm between Li-Ion and Lead-Acid (open to others!)
Essentially - which is the easiest/cheapest to install charging circuitry within the unit for? (I don't mind building a circuit but I'd rather not if possible :) )