Teardown and re-purpose surplus power tool batteries to extract 18650 Vape Batteries for cheap! I use 18650 Lithium Batteries very often in my DIY projects, simply because they are easy to find, cheap and very powerful. These cells are often found in powerbanks, vape mods, Telsa Cars, E-bikes and in Powerwalls.

I bought my power tool battery packs from a local surplus warehouse. Each pack costs 500-900php ($10 - $18), containing 20 extractable 18650 cells. Each cell would turn out to be 25-45php ($0.50 - $0.90). I would often find 1,300 mAh Samsung cells or 2,500mAh LG cells.

The advantage of extracting and re-purposing 18650 cells from power tool battery packs, is that you get to have 100% genuine branded cells (given that you buy branded packs). Surplus battery packs are often unused and are in a brand new condition. Nothing beats the price when it comes to self recycling.

4 Bay Battery Charger: http://bit.ly/310cfAA
30-in-1 Screwdriver Set: http://bit.ly/310gLim
Surplus Lithium Power Tool Cells: http://bit.ly/310gLim