18650 lithium 3.7v 2 CELL battery HOLDER SERIES battery

The 18650 Lithium 3.7V 2-Cell Battery Holder (Series) is designed to securely hold two 18650 Li-ion batteries connected in series, providing a nominal output voltage of 7.4V (8.4V when fully charged). It is ideal for portable electronics, robotics, DIY battery packs, Arduino projects, and power supply applications.

Features

• Holds 2 × 18650 Li-ion batteries
• Series connection for higher output voltage
• Nominal output voltage: 7.4V
• Fully charged voltage: 8.4V
• Durable ABS plastic housing

Polarity

• Red Wire: Positive (+)
• Black Wire: Negative (−)

Note: Two 3.7V 18650 cells connected in series provide a 7.4V nominal output and 8.4V when fully charged. Always use matched batteries with the same capacity, charge level, and age, and charge them using a 2S Li-ion charger or BMS.