LED capacity status indicator for Li-ion / LiPo batteries, 1S–4S

Product detailed description

Simple LED capacity indicator for Li-ion and LiPo batteries, available in versions for 1S, 2S, 3S, and 4S cell configurations. Pressing the button displays the remaining capacity on four LEDs in increments of 25, 50, 75, and 100%, turning off automatically after a few seconds to prevent continuous battery drain. Ideal as a tester for custom battery packs, RC models, torches, or portable devices using Li-ion cells.

Specifications:

• Battery type: Li-ion, LiPo
• Measurement principle: based on current battery voltage
• Indication: 4 SMD LEDs (1× red, 3× green) – 25 / 50 / 75 / 100 %
• Control: micro-button, LEDs turn off automatically after several seconds
• External LEDs: solder pads for custom 3 mm or 5 mm LEDs
• Dimensions: 44 × 9 × 4 mm
• Weight: 4 g
• Variants:
  • 1S: 1 cell, nominal 3.7 V
  • 2S: 2 cells in series, nominal 7.4 V
  • 3S: 3 cells in series, nominal 11.1 V
  • 4S: 4 cells in series, nominal 14.8 V

Important wiring notice:

• Select the version according to the number of cells in series – an indicator for a different cell count will show inaccurate values.
• Capacity is reliably indicated under no-load conditions. Under load, the battery voltage drops, and the indicator will then show less than the actual remaining capacity.
• Ensure correct polarity. If the module heats up after connection, it is connected in reverse – disconnect it immediately.

Package contents:

• 1× LED capacity indicator (according to selected version)

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.