I assume you're assking about a 4Ah(ampere-hour) battery.
How long it'll last depends on the drain.
If the drain is 1A it'll last 4 hours.
It should be an 12N 12A-4A battery
133.33333.. hrs
Yes as long as it fits in the battery holder.
According to research, the Energizer brand LED light provides a long battery life. It is also better to use an LED as it does not use as much battery life.
As long as both batteries are the same voltage, you can jump start with the battery. If you want to charge the battery then use a battery charger.
until the battery is dead
5a or 4a squared
(4a)2 or 16a2
4a*4a*4a = 64a3 cubic units
What is the additive inverse of -4a?
8
Voltage can be calculated using Ohm's Law:Voltage = Current (A) x Resistance (Ω)Voltage = 4A x 3Ω = 12 VoltsTherefore, the battery is a 12 Volts.The power dissipated is Voltage x CurrentPower = 4A x 12V = 48 Watts