remove the battery and plug the power supply
You mean running on AC power without a battery?
A: The only calibration that a potentiometer is allow to do is on the resistance scale. The reason being is the internal battery looses capability with age so to compensate the pot. will change current available to make the ohmmeter to go to zero when the probes are shorted. To test a volts range then an accurate voltage must be used to verify calibration.
There are lots and types of battery
Its the CR2032 battery
It's what happens when a battery is about to expire.
wet cell battery
The Compaq Presario battery is a laptop battery that is 4.8 inches by 1.7 inches in size. This is roughly the size of a standard smart phone but a bit wider than it.
A Compaq Presario V2000 battery can't be used in any other model than the Compaq Presario V2000 model itself. The size of the battery won't fit any other laptop, and will only damage them.
The Compaq Presario R3000 battery has an original cell type, Li-ion chemistry, and a capacity of 4400mAH/ 8- cell. The battery has a life of 11 hours.
The Compaq Presario V5000 battery will be compatible for laptops that are from the computer company, Compaq. You can find these batteries online in Amazon or eBay.
The battery life on the Compaq Presario c700 series laptop doesn't seem to be that good it tends to run for around 2 hours with no recharge, overtime this will worsen as the battery ages.
$110.49
A person can go to several different places online to purchase a Compaq Presario 2100 battery for a reasonable price. Some of these places include Laptop Battery One and Royal Sonic.
The Compaq Presario charger uses a voltage of 100-240 volts. You can find out more about the specifications of this charger on websites such as All New Battery and Toms Hardware.
UNDER THE KEYBOARD OR THERE IS A SMALL ACCESS PANEL ON THE BOTTOM OF THE LAPTOP
The HPev089aa is a 10.8 volt Lithium-ion battery that is used to power various series of Pavilion and Presario notebooks. Replacements can be purchased online through websites such as Amazon and BattDepot.
Compaq Presario 2500 battery are usually made with Li-Ion batteries and the very nature of Li-Ion batteries is that they have about 500-600 charges and last at most about 4-5 years.
It really depends on how you're using it. Intensive gaming will eat the battery faster than word processing or browsing the internet. Although you should keep a laptop plugged in anyways.