Whether used or not Batteries need to be at least 40% CHARGED for Several HOURS every month.
Batteries are not warrantied for more than 1 year.
Batteries last between 300 to 500 cycles or 1 year on the shelf.
If you do not charge them over a year they will die.
This is not covered under warranty.
A lithium-ion battery provides 300-500 discharge/charge cycles. The battery prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible. Instead, charge the battery more often or use a larger battery. There is no concern of memory when applying unscheduled charges.
Although lithium-ion is memory-free in terms of performance deterioration, batteries with fuel gauges exhibit what engineers refer to as "digital memory". Here is the reason: Short discharges with subsequent recharges do not provide the periodic calibration needed to synchronize the fuel gauge with the battery's state-of-charge. A deliberate full discharge and recharge every 30 charges corrects this problem. Letting the battery run down to the cut-off point in the equipment will do this. If ignored, the fuel gauge will become increasingly less accurate.
Simple Guidelines
Avoid frequent full discharges because this puts additional strain on the battery. Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory. (In this respect, lithium-ion differs from nickel-based batteries.) Short battery life in a laptop is mainly cause by heat rather than charge / discharge patterns.
Batteries with fuel gauge (laptops) should be calibrated by applying a deliberate full discharge once every 30 charges. Running the pack down in the equipment does this. If ignored, the fuel gauge will become increasingly less accurate and in some cases cut off the device prematurely.
Keep the lithium-ion battery cool.Avoid a hot car. For prolonged storage, keep the battery at a 40% charge level.
You must always feed it something or it will get weak and die.
Consider removing the battery from a laptop when running on fixed power. (Some laptop manufacturers are concerned about dust and moisture accumulating inside the battery casing.)
Avoid purchasing spare lithium-ion batteries for later use. Observe manufacturing dates. Do not buy old stock, even if sold at clearance prices.
If you have a spare lithium-ion battery, use one to the fullest and keep the other cool by placing it in the refrigerator. Do not freeze the battery. For best results, store the battery at 40% state-of-charge outside the laptop in a cool dry place.
I have the same problem except my laptop I just got.
I know the charger works because I used it on the other laptop I got (the laptops are identical).
One laptop charges and the other doesn't. The computer that doesn't charge cannot be without the plugged in or else it will turn off. However, the computer does not sense a plug in because there is a red x over the picture that has the plug in. Running my cursor over it says "No battery is detected".
The other computer works just fine without the charger in at all times.
So again back to the other computer. The yellow/amber light keeps flashing repeatedly and the blue light next to it comes on not as often.
I have tried installing the battery compliant driver again and again. This failed.
I have removed the adapter in the computer after I shut the computer down. I then put the adapter back into the computer gently after 10 seconds. I held down the power on button for 30 seconds. This failed.
I don't know what else to do sadly. Any ideas?
Also if I do something with the bios will I be able to turn my computer on again if the bios update doesn't work? I heard your computer may not turn on again.
I have been studying of the same problems and some where in an old post... it was stated that an undetected battery could be caused by the service code not being present in bios.
I am sorry that I am not an educated technician (though I like to recondition computers as a hobby) or I would explain exactly how to check and fix.
if you are comfortable with making changes in bios then you will know how to get there... just go through the list looking to see if your service tag is listed for your machine
if not... log on to the Dell support page... it may list your service tag some where on the page (I can not remember exactly...) then just copy it into the appropriate box in bios.
please keep in mind... all of the above is what I would do if I were in your situation...
you might prefer to speak to a tech if any of it seems a bit complex.
msbrown1124
2 Posts
0
June 24th, 2011 07:00
Also, we would like to add that the laptops are brand new, and right out of the box, though they had been stored for a little under a year.
speedstep
9 Legend
•
47K Posts
0
June 24th, 2011 07:00
Whether used or not Batteries need to be at least 40% CHARGED for Several HOURS every month.
Batteries are not warrantied for more than 1 year.
Batteries last between 300 to 500 cycles or 1 year on the shelf.
If you do not charge them over a year they will die.
This is not covered under warranty.
A lithium-ion battery provides 300-500 discharge/charge cycles. The battery prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible. Instead, charge the battery more often or use a larger battery. There is no concern of memory when applying unscheduled charges.
Although lithium-ion is memory-free in terms of performance deterioration, batteries with fuel gauges exhibit what engineers refer to as "digital memory". Here is the reason: Short discharges with subsequent recharges do not provide the periodic calibration needed to synchronize the fuel gauge with the battery's state-of-charge. A deliberate full discharge and recharge every 30 charges corrects this problem. Letting the battery run down to the cut-off point in the equipment will do this. If ignored, the fuel gauge will become increasingly less accurate.
Simple Guidelines
Avoid frequent full discharges because this puts additional strain on the battery. Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory. (In this respect, lithium-ion differs from nickel-based batteries.) Short battery life in a laptop is mainly cause by heat rather than charge / discharge patterns.
Batteries with fuel gauge (laptops) should be calibrated by applying a deliberate full discharge once every 30 charges. Running the pack down in the equipment does this. If ignored, the fuel gauge will become increasingly less accurate and in some cases cut off the device prematurely.
Keep the lithium-ion battery cool. Avoid a hot car. For prolonged storage, keep the battery at a 40% charge level.
You must always feed it something or it will get weak and die.
Consider removing the battery from a laptop when running on fixed power. (Some laptop manufacturers are concerned about dust and moisture accumulating inside the battery casing.)
Avoid purchasing spare lithium-ion batteries for later use. Observe manufacturing dates. Do not buy old stock, even if sold at clearance prices.
If you have a spare lithium-ion battery, use one to the fullest and keep the other cool by placing it in the refrigerator. Do not freeze the battery. For best results, store the battery at 40% state-of-charge outside the laptop in a cool dry place.
myininaya
3 Posts
0
July 23rd, 2014 03:00
I have the same problem except my laptop I just got.
I know the charger works because I used it on the other laptop I got (the laptops are identical).
One laptop charges and the other doesn't. The computer that doesn't charge cannot be without the plugged in or else it will turn off. However, the computer does not sense a plug in because there is a red x over the picture that has the plug in. Running my cursor over it says "No battery is detected".
The other computer works just fine without the charger in at all times.
So again back to the other computer. The yellow/amber light keeps flashing repeatedly and the blue light next to it comes on not as often.
I have tried installing the battery compliant driver again and again. This failed.
I have removed the adapter in the computer after I shut the computer down. I then put the adapter back into the computer gently after 10 seconds. I held down the power on button for 30 seconds. This failed.
I don't know what else to do sadly. Any ideas?
Also if I do something with the bios will I be able to turn my computer on again if the bios update doesn't work? I heard your computer may not turn on again.
myininaya
3 Posts
0
July 23rd, 2014 04:00
Both of them I bought at the same time within this month.
I just wanted to add that for clarity.
Thanks very much for your time.
myininaya
3 Posts
0
July 23rd, 2014 06:00
Sorry when I said I removed the adapter in the computer, I was talking about the battery :p
But I also did remove the charge cord too during the process I was talking about above.
leo66
1 Message
0
December 28th, 2014 17:00
I have been studying of the same problems
and some where in an old post...
it was stated that an undetected battery
could be caused by the service code
not being present in bios.
I am sorry that I am not an educated technician
(though I like to recondition computers as a hobby)
or I would explain exactly how to check and fix.
if you are comfortable with making changes in bios
then you will know how to get there...
just go through the list
looking to see if your service tag is listed for your machine
if not...
log on to the Dell support page...
it may list your service tag some where on the page
(I can not remember exactly...)
then just copy it into the appropriate box in bios.
please keep in mind...
all of the above is what I would do
if I were in your situation...
you might prefer to speak to a tech
if any of it seems a bit complex.