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Home / Computer Hardware, Monitors & Peripherals / LTC4150 Coulomb Counter Battery Charge Detection Module Current Detection Sensor for Battery Charging and Discharging

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Input Voltage Range 2.7V to 8.5V
Supply Current 250µA (Typical)
Interface Type Serial 3-Wire
Measurement Accuracy ±1%
Operating Temperature -40°C to 85°C
Package Type Breakout Board
Sense Resistor 0.05Ω 1% Included
Clock Frequency 32.768kHz
PCB Dimensions 25mm x 15mm
Module Weight 3.5g

5 reviews

A

Anonymous

Apr 04, 2026

Rating: 5/5

Excellent for battery packs

Works exactly as described. Integrated the pulse counting easily with my microcontroller. Accuracy is spot on for my 18650 setup.

A

Anonymous

Mar 31, 2026

Rating: 3/5

Works but needs calibration

Functional module. Had to tweak the sense resistor value in software to get precise readings. Expected plug-and-play accuracy.

A

Anonymous

Mar 28, 2026

Rating: 4/5

Good module, small learning curve

The LTC4150 is a classic chip. This breakout saves time. Only 4 stars because the pinout diagram on the back is a bit faint.

A

Anonymous

Feb 24, 2026

Rating: 5/5

Perfect for off-grid monitoring

Using this to monitor my lithium battery bank. The coulomb counting is much better than just voltage sensing. Very stable.

A

Anonymous

Feb 23, 2026

Rating: 5/5

Reliable current sensing

Been running this on my robot for weeks. No drift observed. Great value for the price compared to building from scratch.

5 FAQ

Q: Does it support I2C communication?

A: No, the LTC4150 uses a proprietary 3-wire serial interface, not I2C.

Q: What is the maximum continuous current?

A: Depends on the sense resistor. With the included 0.05Ω, we recommend staying under 5A for heat management.

Q: Can I use an external clock?

A: Yes, there is a pin designated for an external 32.768kHz crystal or clock source.

Q: Is the sense resistor replaceable?

A: Yes, it is a standard 1206 package resistor that can be swapped for different current ranges.

Q: Is this compatible with 3.3V logic?

A: Yes, the module operates comfortably within 3.3V logic levels.

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