There should be no problem in a cell phone, it will take a little longer to charge but it will also give you 33% more operating time before you need to recharge the phone.
No reason why not. So long as the physical size of the battery matches, and the voltage it delivers is the same - you should be able to replace it with the higher mAh battery.
Yes, this is possible. The digits refer to the battery life as measures in milliamperehours (mAh). If "x" indicates the old battery and "y" indicates the new, then the equation (60/4200)*4400 will indicate how much longer the battery will last.
Yes, but only if the power supply design of the laptop allows it, because the charge controls are dependent on the battery. Ask the manufacturer first.
12 hours maximum
Sure, if they have the same voltage.
These figures represent capacities of use for batteries. If a device uses 50 mA an hour on a 800 mAH battery, the device would operate for 16 hours before depleting the battery. If the same device was connected to a 700 mAH battery, the device would operate for 14 hours before depleting the battery.
This is an informal unit for energy, often used for batteries. mAh = milliampere x hours. If you know how much current you will need (in milliamperes), you can divide the 4400 mAh by the amount of current, to calculate how many hours the battery will last.
Milliamps Hour (mAh) is important because it's the easiest way to distinguish the strength or capacity of a battery. The higher the mAh, the longer the battery will last. Batteries with different mAh ratings are interchangeable. If your battery is rechargeable then the mAh rating is how long the battery will last per charge. Milliamps Hour is 1/1000th of a Amp Hour, so a 1000mAh = 1.0Ah Think of a cars gas tank. Voltage is how much gas is being used, and mAh is the size of the gas tank. The bigger the gas tank (mAh) rating the longer the device will run. If your battery is rechargeable, then think of the gas tank as refillable (rechargeable).
Yes it does! 1000 mAH = 1Ahr 1Ahr = 1000 mAhr 4.4 Ahr * 1000 = 4400 mAH 4400 mAh / 1000 = 4.4 Ahr mAH milli Amp Hours (1000 thousandth of Amp Hour)
can use 1400mah battery to replace 760 mah
It's not a question about "better", it's about what's most important to you - weight/size or runtime. The 4400 mAh battery will let you run the laptop on battery longer, but will probably also make it a little bit bigger/heavier. More to carry around. The 2550 mAh will last a bit shorter, but will keep the laptop smaller and lighter. You have to decide what's important to you.
mAh is a rating of a battery's capacity. A 4400 mAh battery is capable of delivering 4.4 amps of current for one hour. A 6600 mAh battery is capable of delivering 6.6 amps for one hour. That is not to say that both batteries will only last for one hour, since the laptop will probably draw less current than that. The important thing to notice is that the 6600 mAh battery has 50% more capacity than the 4400 mAh battery. If battery life is your #1 priority, the larger battery would be a good choice. However, it may be larger and heavier than the 4400 mAh battery. If a small, lightweight laptop is #1 priority, the smaller battery might be better. Also, if the laptop will not be unplugged, on the go all the time, the smaller battery might be a better choice due to it being cheaper. As all things engineering, there are compromises to be made.