If you are using an Apple keyboard and mouse it will come up on the screen warning you when the battery is low and needs recharging. Or you can open System Preferences and then click the mouse & keyboard icons. On the bottom left it will show you the battery level.
yes the wireless keyboard works on battery bcz it needs supply to establish the wireless network
It will need to be recharged and if it will not accept a charge it will need to be replaced.
Recharged or replaced
Yes I can it will charge slower until it get about 5% charge
replace it
Batteries do not generate electricity; they only store a charge that is generated elsewhere. After that charge is used up, they need to be recharged or replaced.
they can be recharged by hooking jumper cables from a car to the mower or if the battery is fried you would have to buy a new battery for it Use a battery charger just like the one you use on an auto battery.
Yes can be charged
Occasionally, you will need to go into system preferences, keyboard, set up blue tooth keyboard, and let your Mac rediscover your keyboard.
An auto motive can be recharged by connecting the dead battery to another vehicle with a charged battery by the use of a jumper cable by connecting both end to both batteries then starting the car with the charged battery inside.
A torch (flashlight) battery is a dry cell, and is not designed to be recharged.
A battery that can be refilled with the energy it has. If it is in a phone, when you charge your phone, you are recharging the battery in your phone.