i believe so, take it to a local kragen and have them check your battery for free.
The alternator will keep the battery fully charged under normal circumstances. Installing aftermarket accessories may require you to install a higher output alternator. Things like high powered amplifiers, lights, etc.
Usually when the battery light comes on its the Alternator, or a bad wire from Alternator to battery, but id check Alternator first.
Your battery is weak, or your your alternator is not charging battery.
Wires between Alternator and Battery, and between Alternator plug connector and fuse box etc.
Alternator is defective or battery has a dead cell.
Not likely.
This usually indicates that there's a problem with your alternator. The car battery works in such a way that it keeps getting recharged as you drive. The alternator is the component that ensures the battery is sufficiently recharged. So the battery light comes on if it senses that the battery is not being charged sufficiently - this might be accompanied by a foreign sound under the hood if indeed the alternator belt is broken for instance. You need to get the battery/alternator checked out at a mechanic or battery centre as soon as possible. If you continue driving the car, especially if you will be using headlights and other power-dependant functions, the power left in the battery is used up, with no recharging taking place, until it's completely dead. This might mean your car randomly switching off on you in the middle of the road as you are driving. Jump-starting won't help and the car will need to be towed. Best advice is to get it checked out immediately.
your Alternator
your alternator is dead.
Out of Oil Out of Water Out of Gas Dead Alternator
If the engine is running, then no. The alternator constantly keeps the battery charged.
The alternator died first and drained your battery shortly thereafter.