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1S Mini Battery Level Indicator Module DC 3-4.2V for Li-ion & Lithium Battery

৳ 85 ৳ 65

Product Code: PKB 2779

Qty :

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Inside Dhaka ৳ 60
Outside Dhaka ৳ 150
Pickup From Store ৳ 0
Inside Mirpur and same Day Delivery ৳ 100
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1S Mini Battery Level Indicator: See Your Li-ion Battery Charge at a Glance

The 1S Mini Battery Level Indicator is a tiny module that shows the remaining charge of a single-cell (3.7V) lithium battery using LEDs. Just connect it across the battery and it displays the level from low to full, so you no longer have to guess with a multimeter. It is a handy add-on for EEE, CSE and Mechatronics students in Bangladesh building power banks, portable devices, robots and battery packs.

Key Features

  • Designed for 1S lithium battery (3.7V Li-ion / LiPo / 18650)
  • Wide input range: DC 3V-4.2V
  • [LED display: blue / red / green bar, shows battery level in steps]
  • Very small size, easy to fit inside project boxes and power banks
  • Low power consumption, will not drain the battery
  • Simple 2-wire connection (+ and -), no programming needed
  • Low cost, ideal for DIY power banks and portable devices

Specifications

  • Model: 1S Mini Battery Level Indicator Module
  • Operating Voltage: DC 3V-4.2V
  • Battery Type: 1S Li-ion / LiPo (3.7V)
  • Display: [LED level indicator, 3-4 steps]
  • Connection: [solder pads: + / -]
  • Size: approx. [__ x __ mm]

Applications / Project Ideas

  • DIY power bank with 18650 cell
  • Portable speaker and Bluetooth amplifier
  • Robot and RC car battery monitor
  • Handheld device and flashlight
  • Solar charger with TP4056 module
  • Battery pack status display

Important Usage Note
Use only with a single-cell (1S) 3.7V battery. Do not connect to 2S or higher (7.4V+) packs or a 5V supply, as it can damage the module. Observe polarity: red wire to battery +, black wire to battery -. The indicator shows an approximate level based on voltage, not exact capacity, and the reading may rise while charging.

Package Includes

  • 1 x 1S Mini Battery Level Indicator Module

Why Buy from Project Kits BD?
Genuine, tested components, student-friendly price and fast delivery across Bangladesh. Wiring ba code e help lagle amader team ache.

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