Why is the battery life so short?

My first thought would be that it is a power supply problem. But, before replacing the power supply, unplug the power cord from computer and wall plug, plug it in a gain making sure it goes in all the way.
If still flaky, its probably a power supply problem.
Hope it helps.

Malfunction of input circuit: voltage delivered is too low. The batteries may
be faulty or depleted. Wait for a few hours, leave the UPS switched on

If absence of input power (utility failure, maintenance work) is expected to last longer than a few hours, switch
off the UPS to save battery power. If the UPS input power is absent for several days and the UPS remains on
under no-load conditions, the batteries can be discharged very deeply, resulting in a short battery life time

The life of the batteries depend on the use. If calculator is on and running programs 24 hours a day, the batteries will not last more that 2 or 3 days. If you use it the calculator for 2 hours a day, fresh batteries may last a semester.
But I believe you want to check the CURRENT state of the batteries. You can buy from an electronic store or a dollar store a device that tells you if a battery is still good or not.
With the TI Connect software you can check battery status. See the screen capture that follows. To obtain the displayed window you must click the button DeviceInfo with calculator connected to the computer and TI Connect running.

Hi .Charge the battery initially for 9 hours.

After the initial charge, under normal usage, your power pack should be fully charged in 3 to 6 hours. If the power pack is run-down completely, it may take up to 6 hours to become fully charged.

The red light is just a power indicator. The light will not go out, change color, or blink when the charging has been completed.

To prolong power pack life, avoid leaving the power pack on charge for extended periods of time (over 30 days without use). Although overcharging is not a safety concern, it can significantly reduce overall power pack life.

The power pack will reach optimum performance after being cycled 5 times during normal usage.

There is no need to run the batteries down completely before recharging. Normal usage is the best method of discharging and recharging the batteries Hope this was of some help to you.

Hi, What causes the battery usage to be short life span is becausethe battery cell of the battery is dead and too weak to power on the phone for too long.

You will need to replace the battery with another one.
Before you use the battery, you will need to charge for longer hours(4to 6 hours) before you use.

Have a nice day.

Hi, it is not normal for a battery to run down as fast as that.

The battery's life you are using, there is a cell inside the battery that determines how the battery functions.

The battery cell might be too weak to carry the phone and you will need to replace battery.

When you get a new battery, make sure you charge battery for Six hours before.

Take care.

Hi,
In most laptops the standard idle life is around 3 - 4 hours. The drain from the internet can cut this down to between 1 - 1 and a half hours. Using games is around the same or less than what the internet takes and if your using an office application it is around 3 - 4 hours.
Using the laptop for power hungry multitasking will reduce battery life dramatically.




Regards.

How long does your battery usually last? If it lasts 2 hours or more, that's normal for a notebook computer. The standby mode and turning off of hard drives is what notebooks are designed to do to give you more battery life. If you have to have it on and available all the time without going into standy mode, you'll need to get used to charging it every couple of hours. If you want to get more battery life, try the following options:
1) have the display turned off when not in use (this setting can be changed where you set up your screensaver)
2) turn off the wireless function (if available) when not in use
3) have the computer go to standby mode after 10 or 15 minutes of inactivity.
4) lower the brightness of your display

All of the above assumes that you're getting a decent charge and can use the notebook unplugged for 2 hours or more. Naturally, over time, notebook batteries wear down and don't hold a charge as well as they once did. If your notebook is a few years old and you're only getting an hour or so on a full battery, then it is probably time to invest in a new battery. If your notebook is new and you are getting this short battery life, contact Dell for a replacement battery as yours may be defective.

One last thing about notebook batteries. They are designed to be charged up and run down. If you leave your computer plugged in to a/c power all the time while you are using your computer, this greatly speeds up the wearing down of the battery. Whenever possible, you should fully charge your battery and then run the battery down to 10% or less before plugging it back in. This ensures that you get the most battery life on a consistent basis.

Hope this help. Please take a moment to rate the solution. Thanks.

I was having the same problem...I found the info below on another blog and it helped me fix my calculator problem. Take out all the batteries, hold the DEL button and put the batteries back in (keep holding the DEL button until all batteries are put back in). This will restart the calculator and restore it to its default settings...but it makes it work again!

"Reflashing the OS is probably the thing to do now. I think there's some trick that throws the calc into OS receiving mode. Hold down DEL while putting the batteries in? I don't remember if that's it. Go to 1-800-TI-CARES/[email protected] if you need specifics on getting the calc to take an OS upload given the state it's in."

it is the matter of battery life time-nothing wrong