SDTC Tech 8-Pack 18650 Battery Holder with Wire Leads 1234 x 37V Series Circuit Black Plastic Battery Case Kit 2 Per Size

18650 Battery Holder Kit with Wire Leads used for electronic experiment projects, Arduino DIY projects, low-voltage energy supply device, also replacing broken battery holders for many electronic devices. Feature: 1. With copper conductor contacts to ensure good conductivity, and the spring clip can hold the batteries tight in place. 2. With black and red wire leads, easy to solder or connect. Specification: Material: plastic shell, copper contact, and nickel-plated steel spring Color: black Cable Length: 15 cm / 6 inch 1-Slot Battery Holder: 76 * 21 * 20 mm 2-Slot Battery Holder: 76.1 * 40.6 * 19.8 mm 3-Slot Battery Holder: 76.3 * 61 * 20.8 mm 4-Slot Battery Holder: 80.5 * 76.3 * 19.9 mm Package Includes: 2 pcs 1x 18650 Battery Case 2 pcs 2x 18650 Battery Case 2 pcs 3x 18650 Battery Case 2 pcs 4x 18650 Battery Case