How to deal with laptop power problem
TOSHIBA PA3534U-1BRS Laptop Battery
Li-ion 4400.00mAh 10.80V
Fits Toshiba Laptop Battery PN: PA3534U-1BAS, PA3534U-1BRS, PA3535U-1BRS, PA3682U-1BRS, PA3727U-1BRS, PABAS098, PABAS174
IBM FRU 08K8193 Laptop Battery
Li-ion, 10.80V, 6600.00mAh
IBM Battery PN: 08K8194, 92P1010, 92P1011, 92P1013, 92P1058, 92P1060, 92P1061, 92P1062, 92P1067, 92P1070, 92P1071, 92P1074, 92P1075, 92P1087, 92P1088, 92P1089, 92P1090, 92P1091, 92P1101, 92P1102, 92P5002, 93P5002, 93P5003, ASM 08K8192, ASM 08K8196, ASM 08K8197, ASM 08K8198, ASM 08K8199, ASM 92P1064, ASM 92P1076, FRU 08K8193, FRU 08K8195, FRU 08K8198, FRU 08K8201, FRU 08K8214, FRU 92P1069, FRU 92P1073, FRU 92P1077
TOSHIBA PA3382U-1BRS Laptop Battery
Li-ion 6600.00mAh 14.80V
Fits Toshiba Laptop Battery PN: PA3382U-1BAS, PA3382U-1BRS, PA3384U-1BAS, PA3384U-1BRS, PABAS052
LENOVO THINKPAD R61 7732 Laptop Battery
Li-ion 7200.00mAh 10.80V
Fits LENOVO Battery PN: 41U3198, 43R2499, ASM 42T4533, ASM 42T5265, FRU 42T4530, FRU 42T4532, FRU 42T4548, FRU 42T4645, FRU 42T5262, FRU 42T5264
The first step to getting to the bottom of laptop power problems is looking at the various components that power a laptop. Let’s tackle the AC adapter first.
First make sure that the AC power adapter light is on. This is usually on the adapter box itself although some laptops have the LED on the side of the computer.
In some cases, laptop power problems are caused by the circuit breaker or overload detection circuit being tripped such as during a power fluctuation. When this happens, unplugging it for a few minutes and then reconnecting it will generally reset the adapter.
If you suspect that your laptop power problems are the result of a dead adapter, try borrowing a similar one and seeing if that works.
Short circuits are also common causes of laptop power problems. These could be caused by anything from physical to electrical damage anywhere in your laptop. A short circuit will actually use up all the power available power, resulting in your laptop being unable to turn on. If the adapter comes on when plugged into the wall socket, but turns off when the laptop is plugged in, you likely have a short circuit on your hands.
One way to isolate laptop power problems caused by a short circuit is to remove anything that could potentially be the culprit. This would include the battery, the hard drive , the DVD drive, the floppy drive, and other removable storage media, and USB devices. After you have removed all of them, try to see if your laptop will go on.
In some cases, laptop power problems may be caused by a spill. If only a small amount of liquid has been spilled, your laptop may still be easily repairable. Spills can cause all sorts of laptop power problems due to the following factors:
Short circuits resulting from liquid residue
Corrosion caused by sugared drinks
Electronic components damage caused by short circuits
In cases of laptop power problems caused by spills, your best option is to turn off your laptop, turn it upside down and dry it for at least 48 hours. If that doesn’t work, you may have to bring your laptop in for servicing.
Why do rechargeable batteries lose their storage capacity over time?
Why do rechargeable batteries lose their storage capacity over time?
In rechargeable lithium-ion batteries - the most common type, used in things like laptop computer batteries and cell phone batteries - one of the two electrodes is graphite, a form of pure carbon consisting of sheets of carbon atoms.
Lithium ions are forced between the carbon sheets when the battery is charged and come back out again when the battery is discharged, explains Robert Hamers, a Wisconsin Distinguished Professor and chair of the UW-Madison chemistry department.
"The first few times that a battery is charged, a chemical reaction occurs on the graphite, forming a thin protective layer," Hamers says. "Over time, this layer slowly becomes thicker and eventually begins to block the flow of electrical current needed to charge the battery, degrading the performance."
A second reason the storage capacity diminishes is physical wear of the graphite itself, he adds. "There is a large volume change as the graphite expands and contracts. Over time that causes the graphite to flake and small particles to break off."
In nickel-metal-hydride batteries, the second-most common rechargeable battery, a small amount of water helps carry electrical charges between the two electrodes. Each time the battery is charged or discharged, side reactions convert some of the water to hydrogen and oxygen, which slowly leak out of the cell. When there is not enough water left, the battery dies.
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