14500 Battery (4pcs) to 18650 Converter / Adapter / Holder / Charger
thingiverse
I Convert Up to 4pcs of 14500 Sized Battery to 18650. This adapter/converter allows you to charge/discharge up to 4pcs of 14500 battery in parallel using a 18650 charger/device. I designed this to enable quick charging of my 14500 using a 18650 powerbank. It also functions as a storage box for the batteries. You can use this to boost your battery capacity for devices that utilize a single 18650 battery and have space to accommodate the battery's protrusion, perhaps with the cover off. I employed copper tape as conductors and double-sided foam tape as a backing to secure/ensure the battery fits snugly in place. The images should be self-explanatory.
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