you put a volt meter on it
Hydrometer
Depends level of skill that the person has, and the condition of the battery.
Yes because the acidity level determines the PH level which when steel and copper are hooked into the lemon and hooked onto a battery it will start to charge.
It depends on the state of charge. A fully charged lead-acid 12V battery will measure around 13.6V, the same battery at the end of useful charge will be approximately 10.5V
If you want to enlarge the Samsung battery life, it is important that you only charge your battery when the level falls down.
Trickle chargers are not used to recharge a dead battery. Trickle chargers are used to keep a battery at a full charge level and can be left connected to the battery permanently.
A battery stores charge and supplies voltage and current. A kilowatt (KW) is a measure of power = Volts x Amps.
The alt will charge it if you can jump it. If it's too dead to jump, you need a battery charger. It may not charge hold a charge if it;s shot though and if not maint free, make sure water level full
Red means that the battery charge level is low or that the alternator is not charging battery properly. Check alternator, voltage regulator, connectors.
Yes, if the voltage level is too low to start the car.
Unless it is a rechargeable battery you cannot charge a dry charge battery. If it is rechargeable you need to purchase a charger for that size battery. Automobile batteries are not dry charge.
An alternator is designed to keep a fully charged battery at peak level. It is not designed to charge a dead battery. Installing a new alternator on a car with a dead battery can in some cases ruin the new alternator. Fully charge the dead battery before starting the engine.