Correct procedure for charging battery

With that being said, be advised that leaving the screwdriver on the charger after fully charged may overcharge it and also shorten its battery life. Therefore, it is recommended to unplug the unit from the charger after charging.

Please replace with same rating/type as given on cell that is normally NI MH, Rating current rating - 600ma, 900ma, higher ma means lasts longer after charge. Brand- panasonic, sanyo, any standard brand, initially charge for 10 to 12 hours. Pl do not keep hand set always on dock, this overcharges the battery, shortening cell life.

Step 1:
No just the laptop charger needs to be plugged in.

Frequent Charging Shortens Battery Life Frequent charging shortens the life span of a Lithium ion battery. Batteries should be charged only after they expend all their power. b> Switching Batteries Switching batteries helps preserve battery life: If a cell phone or computer user puts in a spare battery while separately charging the primary Lithium ion battery, that helps extend the life of both batteries. b> Removing Batteries Most laptops charge the battery when a user plugs in the AC adapter. Users can adjust this setting by changing the power options. Windows places this option in the Control Panel, while the Gnome Linux desktop places power options under "Administrative Tools". Cell phones incorporate their own power-saving features that the user usually cannot control. b> When to Replace a Lithium Ion Battery If a laptop battery does not hold a charge for more than a few minutes, a user must replace the Lithium ion battery if he wants to use the computer without an AC adapter. b> Other Ways to Extend Battery Life Storing a battery in a cool, dry environment causes a lithium-ion battery to last a little longer and reduces the frequency of needed battery replacements. Battery Bar - Free version available
http://osirisdevelopment.com/BatteryBar/index.html

Problems with power usage and battery life - Mr Fixit
http://support.microsoft.com/gp/windows_battery_power_settings

How old is the battery ? it might be past its use by date
Batteries can only be charged a certain amount of times before they need to be replaced

Frequent Charging Shortens Battery Life Frequent charging shortens the life span of a Lithium ion battery. Batteries should be charged only after they expend all their power. b> Switching Batteries Switching batteries helps preserve battery life: If a cell phone or computer user puts in a spare battery while separately charging the primary Lithium ion battery, that helps extend the life of both batteries. b> Removing Batteries Most laptops charge the battery when a user plugs in the AC adapter. Users can adjust this setting by changing the power options. Windows places this option in the Control Panel, while the Gnome Linux desktop places power options under "Administrative Tools". Cell phones incorporate their own power-saving features that the user usually cannot control. b> When to Replace a Lithium Ion Battery If a laptop battery does not hold a charge for more than a few minutes, a user must replace the Lithium ion battery if he wants to use the computer without an AC adapter. b> Other Ways to Extend Battery Life Storing a battery in a cool, dry environment causes a lithium-ion battery to last a little longer and reduces the frequency of needed battery replacements. Battery Bar - Free version available
http://osirisdevelopment.com/BatteryBar/index.html

Problems with power usage and battery life - Mr Fixit
http://support.microsoft.com/gp/windows_battery_power_settings b>

Actually, you can't overcharge the battery. The base is designed to hold the handset indefinitely. Once the battery is charged it doesn't do any damage. You probably just don't have the battery charged enough to use the phone. Leave the handset on the base overnight, let the thing charge, and it should work properly.

try to change your battery, maybe it's worn out. 2nd, maybe your charger is broken. if you have another nokia cellular phone with the same charger, try to charge it up. if it won't charge, then, your charger is damaged. an advice: let your battery be drained before you charge it up so that your battery will last a bit longer than the actual battery life itself and don't overcharge it also. if it is full, unplug your charger always.

There are basically 3 types of chemicals currently being used for cell phone and laptop batteries. Ni-cad, Ni-mh and Li-ion. There is a fourth makineg its way in Li-ion polymer. A couple things are consistent for all types of batteries no matter what chemical is inside. You must initially give the battery a 12-14 hour charge on the home charger. (Don't use a cigarette adapter for the first charge. This conditions the battery and don't take it off the charger that first time even if the charging indicator says it's full after 3 hours. Also the manufacturer's also state to run it thru 3 charge cycles. What that mean's is that you fully charge and fully drain 3 times. 1 full charge + 1 full drain = 1 charge cycle. Here's where the way you charge the battery starts to differ.

Ni-cad: Mostly only on older devices, has a "memory" effect, should be drained before a full charge is put on it, should be removed after overnight charge or can be overcharged and burnt out.

Ni-mh: Still used for some devices, has slight memory effect but not enough to have to fully drain before the recharge, should not be consistently left on charger after full charge that can eventually burn out battery and shorten usage time.

Li-ion and Li-ion polymer: Used on a lot of newer devices, has no "memory" effect, should be recharged as often as possible, actually likes to be charged and draining it regularly can cause the usage time to be shortened, can NEVER be overcharged so whenever you're near a charger put it on there. Besides those benefits a li-ion battery is lighter and smaller but the chemical can hold more charge than Ni-cad and Ni-mh.

So the one reply to your question said to error on the side of draining the li-ion batteries. This is incorrect information. You want to charge the battery before it gets below a 20% charge. Also batteries will not go bad from accidentally doing the incorrect charging procedure here and there but normally follow the correct procedure. One last note try to use the home charger more often than the cigarette lighter charger for best long term results. Cigarette lighter chargers do not give a full charge (about 95%) which in the long run can damage any type of battery listed.

You may have actually overcharged it and shortened the life of the battery

Your battery is going bad, it will no longer hold a charge. There is nothing you can do about it but get a replacement.

Battery life can be shortened by excessive draining, and recharging.
Also faulty manufacturing can cause this.

Sorry to hear about your luck, and thank you for choosing Fixya!