2S 18650 Li-po Lithium Battery Capacity Indicator Module

The Lithium Battery Capacity Indicator module for 2S packs shows how much charge is left in a battery made of two lithium cells in series, such as two 18650 cells. Connect it across the pack and its level display gives a quick view of the remaining capacity, so you know when to recharge before the battery runs flat. It is a simple add-on for power banks, robots, speakers and other DIY battery projects.

Lithium Battery Capacity Indicator Specifications

• Battery type: 2S lithium (Li-ion or Li-po), two cells in series
• Pack voltage: 7.4 V nominal, 8.4 V when fully charged
• Typical cells: 18650 Li-ion cells
• Display: charge level indicator
• Connection: battery positive (+) and negative (−)

Lithium Battery Capacity Indicator Applications

• Charge display for DIY 18650 battery packs and power banks
• Robots and RC models running on 2S batteries
• Portable speakers and LED lights
• Solar and battery storage projects

What's in the Box

• 1 × 2S lithium battery capacity indicator module

Tip: Use it only on a 2S pack (8.4 V maximum); a 3S or higher-voltage pack can damage it. The reading is based on the pack voltage, so it is most accurate when the battery is resting rather than under heavy load.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.