The Way To Replace a CMOS Battery in a Toshiba Laptop

The CMOS battery inside of your laptop contains important information, including system settings, and date and time configurations. When the battery loses its charge, your laptop will revert back to an older date and time, which will cause problems with various Windows programs and utilities. Replacing this battery is not costly, though it will involve opening your Toshiba laptop.
Instructions
Things You'll Need

• Screwdriver
• Acer Aspire Battery

1. • 1 Open your Toshiba laptop using your screwdriver. As all laptops have different aesthetic features, consult your owner or service manual for specific instructions in opening your Toshiba laptop.
     
   • 2 Locate the motherboard. This board will be the size of your laptop and colored green.
     
   • 3 Locate the CMOS battery. This battery is about a half inch in diameter, silver and is round. On some laptops, this toshiba satellite battery is protected by a blue or black static shielding bag. Remove this bag.
     
   • 4 Carefully remove any clips or tape holding the battery in place. Using your fingers, gently lift the battery free of its holder. Dispose of the battery in a safe manner.
     
   • 5 Insert your new pa3399u 2brs battery into the holder, replacing any clips or tape.
     
   • 6 Reassemble your Toshiba laptop.
     
   • 7 Boot your laptop and set the correct date and time. Restart your laptop to ensure the changes have been saved and that the new CMOS battery is saving the relevant data.
     
2. • • Touch any piece of metal to rid yourself of static electricity before touching any computer components.
       
     • Opening your Toshiba laptop will void your warranty.
       
   Tips & Warnings
   

CMOS battery also know as RTC battery

1. Any laptop computer has a CMOS battery also known as RTC battery. The CMOS battery connects directly to the laptop system board and helps to retain important BIOS settings such as system time, date, BIOS configuration while the laptop is turned off or even when the main battery is removed.
   The CMOS battery is rechargeable and it's getting charged when the laptop is plugged into the mains.
   CMOS batteries come in different shapes ans sizes.
   On the picture below you see a basic coin cell CMOS battery. This type of batteries usually found in older laptops. This battery is removable and replaceable.