Radio Use when engine is not runningYes, use of the radio when the engine is not running will drain the battery. Also, IF the use of the radio requires the ignition switch to be in the ON position, then any other devices [such as on-board computers, electric fuel pumps, etc.] that are turned on when the key is on will also add drain to the battery.IF your vehicle ignition switch has an "accessory" position [usually one "click" counterclockwise from the OFF position, then only the accessories that you turn on, will drain the battery.
If you use the radio without the engine running you will eventually discharge the power from the battery. It should be fine for a couple of hours, If not, your battery may need replacing.
bad ignition switch, bad battery, bad alternator/regulator,
Turn your key to accessory, but watch out, it will drain your battery
there is a 17 mm bolt under the engine . through the skid plate remove this bolt and drain oil completely. then replace oil filter on right side of engine ( black o ring to face cover ) replace alum. washer on drain bolt and reinstall . torque to 18 ft/lbs .refill with oil on left side with 2.2 liters of 10w40 . start engine and allow to run for 3-5 mins. at idle . stop engine and check level on dipstick on right side of engine. add oil to level
The head lights are the biggest long term drain on your battery. (The starter is a heavier drain, but you can't leave it on for very long.)
easily unattach the hose coming from the tank leading to the carburetor turn the gas ''on'' and drain and then turn to "reserve" and drain the rest of the gas.
A car battery in any car would drain due to a short in the electrical system.
Waiting for the battery to drain completely to extend battery life.
Dead cell in the battery requiring it be replaced or something is on pulling power from the battery. Some light or relay.
When the battery light is on. That means your charging system isn't working. You should have your system check. It will drain your battery.
Dead cell in battery, a light is on somewhere on the vehicle, or a relay is stuck.
Defective alternator or voltage regulator. Also possibly the battery is defective with a dead cell.
Dead cell in the battery itself or something is on pulling power from the battery. A light somewhere or a stuck relay.
Something causes a slow drain on your battery. As it does, your battery slowly discharges. If you know that your car will be not used for several months, you might try disconnecting on of the battery terminals.
Can be a dead cell in the battery or any light on the vehicle that is staying on. Can also be a relay that is stuck.
Engine compartment hearing up causes ground fault to be completed. Is there a constant drain on the battery also? If so there is a wiring problem. Could be as simple as a bad ground connection to the battery connection.