The Game Boy Advance CleanJuice will turn the built in GBAs LED to red when you have about 5% battery left (versions sold prior to August 2020 require the Low Voltage add-on board to do this).

The GBO Clean Juice does not have this feature. 

How will I know when the battery is low?

Do I need to solder or cut the CleanJuice?

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Composite Video Signal

Schematics (Atari 2600)

Hardware Overview (Atari 2600)

TIA Chip (Atari 2600)

Video / Button Hex Buffer (Atari 2600)

Extracting Composite Video (Atari 2600)

TIA Video Faults (Atari 2600)

Atari 2600

Power Circuit (Atari Lynx II)

Safe Boot (Atari Lynx II)

The Suzy ASIC (Atari Lynx II)

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Reading Game Cartridge (Atari Lynx II)

Atari Lynx II

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Mattel Intellivision

GB CleanAmp Install Guide

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GBA-SP CleanAmp Install Guide

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Sega Saturn

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BQ24193 Battery Charger

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Send In Repair Service

Will the Prestige shells fit AGS/Original screens?

What finish are the Pearl series shells?

What materials are finish are the Prestige shells made from?

Prestige Shells & Consoles

What do the LEDs mean on the CleanJuice?

How long will the CleanJuice last?

CleanJuice Battery Upgrade

CleanAmp, PureSilence and Dehum. What's the difference?

I can hear noise after adding CleanAmp?

CleanAmp Audio Amplifier

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How is your glass different that others?

Glass Lenses

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