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Laptop Batteries Backup RTC for Notebook Computers

Exceptional Nationwide Laptop Repair Service
  Step 1   Choose Vendor  
  Step 2   Choose Model Line  
  Step 3   Choose Series  
    Choose Model  
    How do I identify my model number?  
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  If your series or model is not listed, please call out toll free number, 1-877-253-8898.  
Apple - B-4251
Laptop RTC Battery: CMOS Batteries 7.2 Volt NiMH Battery
Toshiba - P000531080
Apple - B-3061
Laptop RTC Battery: CMOS Batteries 6 Volt Lithium Rechargeable Battery
Toshiba - H000046840
Laptop RTC Battery: BATT-LI CR2032 3V/220mAh/
HP - 537616-001
Laptop RTC Battery: Real Time Clock (RTC) battery
HP - 635310-001
HP - 672013-001
HP - 697917-001
Laptop RTC Battery: RTC BATTERY
HP - 741976-001
Laptop RTC Battery: RTC BATTERY

In most laptops, as well as many other electronics, there is a Real Time Clock microchip that keeps track of the current date and time. The laptop RTC battery functions powers the real time clock in the same manner as a watch, and runs continuously; regardless of whether the device is powered-on or off. Laptop RTC batteries receive power directly from the notebook’s main power. When started, the device executes a process and receives the correct time and date. The small internal quartz-clock is capable of running for five to seven years and then the notebook RTC battery must be replaced.

A malfunctioning of the notebook RTC battery may also be the reason that the devices fails to boot or start. The RTC chip also contains 64 Bytes of RAM (Random Access Memory), and the internal clock requires at least 10 bytes of this space. Up to 54 bytes is used for other vital operations. The notebook's BIOS stores a great amount of information in the CMOS RAM. Should the component lose power, the computer may not be able to communicate with the hard disk or recognize the configuration of the machine. Without properly working laptop RTC battery, the computer will not run.

The installation of a new or replacement laptop RTC battery can be a difficult task. Usually the laptop RTC battery is connected directly to the laptop’s motherboard; so much of the laptop must be disassembled. It is highly recommended that you consult your notebook’s user manual before attempting to replace the laptop RTC battery.

Can't find the right part?  Our expert technical sales staff can help you identify the part that you need.  We are available via toll-free number at 1-877-253-8898 or online part request form.
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