When we go out and look for phones, the first thing I do I always look at the battery capacity, usually 2000 mAh, 3000, up to 10000 mAh for a (external?) battery.
Looking at laptop batteries, they are much much larger and have only afraction of what the most massive batteries for phones have.
My laptop battery has, for example, 5000 mAh, probably not much higher than 15-20V,
if I get four 10,000 mAh phone batteries I get the same voltage range in serial connection and still those 10,000 mAh, or not? (or maybe 40,000 mAh). Yet I will save space.
Is it a wise choice to construct such a battery for my laptop?
Is my logic correct?