5 * 18650 DIY powerbank
I was given a bunch of laptop batteries a year ago. what to do? powerwall? or DIY powerbanks?
so I bought a few of these. also a 8*18650 one. I like these ones as they have the % meter. I bought some basic 3^18650 "xiaomi" aluminium DIY packs- they are great- jus can't tell how much juice is left.
still have 50 or so 18650 cells that I've capacity tested with a LiitoKala Lii-500. had a bunch of 3,000mAh cells. so my powerbanks are decent.
laptop batteries usually have one cell that craps out and that renders it useless. the remaining cells are usually fine. so this is a great way to reuse the remaining cells in a productive way.
also a great way to get cheap powerbanks.
there are other colours that cost a few cents more.
This seller sells them even cheaper ~US$3.05 but they don't have the seller status to post as the main deal. I'd go for these ones.
enjoy.
So you cracked open laptop batteries and transferred them into these shells? Are the batteries like AA size?