Dual battery holder

thingiverse

These are battery holders with magnets so no screws are needed. It works better on unprotected batteries because the magnet is applied directly to the metal instead of the protection PCB. CAUTION: Lithium Ion Batteries Are Extremely Dangerous, Handle Them Carefully And Correctly. If You Don't Know How To Wire Them Properly You can wire them in parallel or serial. On the photo they are wired in 2S configuration like on the drawing. You can also add balancing wiring if desired. It comes in different sizes: 18650, 26650, 32650. Just print two parts for the top and bottom. Bill Of Materials Below Are Affiliate Links; It Doesn't Cost Anything But Gives A Few Cents If Purchased Magnet https://www.banggood.com/50pcs-N50-D-103mm-Strong-Ring-Magnet-3mm-Countersunk-Hole-p-940059.html?p=IH111511352354201706 These magnets are quite fragile so handle them with care. Bolt Nuts (https://www.banggood.com/fr/Suleve-M3SP1-50Pcs-M3-Stainless-Steel-Phillips-Flat-Head-Countersunk-Machine-Screw-4-12mm-Length-p-1248856.html?p=IH111511352354201706) Banana Plug (https://www.banggood.com/5-pair-AMASS-4MM-Gold-Plated-Banana-Plug-Bullet-Connectors-Charger-Adapters-p-1043319.html?p=IH111511352354201706)