Yes....... But........ 750mAh and 800mAh are the capacity of the battery. More capacity means more power. The handset always assumes that the proper batteries are inserted. If it was designed for 800mAh then the handset puts a charge of 800 into the batteries. If a 750mAh is inserted instead, it will overcharge the batteries. Overcharging is not good for batteries. Each overcharge will lessen the life of the battery. The batteries may heat up too much which could be dangerous. In the vice versa case it might happen that the 800mAh batteries are always charged only upto 750mAh, giving you the same performance and not better. So it completely depends on the way the handsets are designed.
YES you can. the mah is just the battery's capacity. It will actually last longer than your old battery. It will just take longer to charge it. Just make sure that they are the same voltage...
It is always best to replace batteries with identical batteries. However if the replacement battery has the same voltage and the same physical construction (so it will connect electrically) it can usually be used as a replacement. The mah rating (capacity) only says how long it takes to charge and how long it will run between needing a charge. However some charging circuits might experience problems if this rating is significantly different from the original.
A battery that has lost it's charge.
No - so long as it's the correct voltage it'll be fine. The mAh figure is the battery's capacity - the higher the number - the longer it will last between charges in the same piece of equipment. It'll take a bit longer to charge though. I have a mobile phone - which came with a 600mAh battery. I bought a 950mAh equivalent off the 'net and get about twice the talk-time from it. I charge mine through my computers USB port when I need to.
Do you mean 'battery'
The PLIP battery on the Peugeot 307 means that the battery is in need of charging. It can also mean there is a problem with the battery cables or the battery needs to be replaced. Not replacing the battery when necessary can also cause problems for the alternator.
It means get a new battery or the battery is broken.
it means the capacity the battery pack can hold
Yes The larger the battery, the more voltage the battery has.
Bateria can mean a few things in English, just as the English term battery has several meanings. Bateria as battery in English can mean to beat something; The fireworks made a battery of noise. Bateria can also mean battery as in an energy source for small electronics or vehicles.
it means the light on a battery of a computer or cell phone