# Power cunsumption of CN0296D I2C LCD

**URL:** <https://forum.sunfounder.com/t/power-cunsumption-of-cn0296d-i2c-lcd/2126>\
**Category:** General\
**Created:** [December 15, 2024, 1:27pm UTC](https://forum.sunfounder.com/t/power-cunsumption-of-cn0296d-i2c-lcd/2126 "2024-12-15T13:27:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![peba](https://avatars.discourse-cdn.com/v4/letter/p/e5b9ba/32.png) [@peba](https://forum.sunfounder.com/u/peba)\
**Post date:** [December 15, 2024, 1:27pm UTC](https://forum.sunfounder.com/t/power-cunsumption-of-cn0296d-i2c-lcd/2126/1 "2024-12-15T13:27:54Z")

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What is the power consumption of the LCD?

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**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\
**Post date:** [December 16, 2024, 9:59am UTC](https://forum.sunfounder.com/t/power-cunsumption-of-cn0296d-i2c-lcd/2126/2 "2024-12-16T09:59:34Z")

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The power consumption of the I2C 2004 LCD module is typically low, with the following specifications:

Supply Voltage: 5V  
Typical Operating Current:  
Without backlight: Approximately 1-2 mA  
With backlight: Approximately 20-40 mA  
Power Consumption Calculation:

Without Backlight:  
Power = 5V × 0.001A = 0.005W (5 mW)  
With Backlight:  
For example, at 20 mA, Power = 5V × 0.020A = 0.1W (100 mW)  
Summary:

Without Backlight: Approximately 5 mW  
With Backlight: Approximately 100 mW  
The power consumption may vary depending on specific usage, but overall, it remains within a low power range.