the most likely reason for this is your battery is no longer capable to hold a charge.... either the acid is no longer good or too low to supplement the charge, or there is a problem with the plates inside the battery, either way you might want to purchase a new battery.... if the battery is fairly new, another problem could be that the "recharging system" for the vehicle is not functioning properly, this could be from a bad alternator or a wire or few could be connected wrong, not connected at all or missing, or the wiring or connection at the battery terminals could be corroded so badly that electricity will not transfer through.... if the problem appears to be corrosion of the terminals, a can of terminal cleaner and a wire brush will alleviate the problem, you should also invest in a can of terminal protectant as well.... if you still cannot solve the problem, have a trustworthy mechanic take a look.
Dead cell in battery, defective alternator, or something is on pulling power from the battery.
The power draining from the battery of a 1987 Cadillac Brougham could be due to several factors, including a faulty alternator that fails to charge the battery properly, parasitic drains from electrical components that remain on when the vehicle is off, or an aging battery that no longer holds a charge effectively. Additionally, corroded battery terminals or wiring issues could contribute to power loss. It's advisable to have the electrical system and battery tested to identify the specific cause.
Either your battery is dead and wont accept a charge or your alternator has stopped charging the battery due to a blown fuse, loose or damaged wiring, loose or broken drive belt or the alternator itself has gone bad.
yes, if the Cadillac converter is not working properly it can cause you to loose power and may in the future cause you to loose your engine.
Dead cell in battery or something is on pulling power from the battery.
The bearings on one of the pulley driven accessories on the engine are probably bad, or the belt is just loose and the alternator cant charge the battery. When the battery is very low on charge the alternator has to put a heavy load on the engine to produce power and a loose belt might not even turn it fast enough to generate any power.
most likely because the battery is either dead or disconnected
It is perfectly fine to charge a power wheel battery with a car charger. It is imperative that you make sure the charger is set to the same voltage as the power wheels battery though.
Not necessarily. Any battery, even a good one, will slowly loose it's charge. Could be that something drained the battery. Clean the battery case and the posts. Slow charge the battery until it is full and then use it. You will soon know if it is good or not.
A battery that won't hold a charge has a dead cell and must be replaced. This is assuming there is not something on that is pulling power from the battery.
Check for: 1) dead battery 2) loose or corroded battery cables
battery is loosing power, probably there is power thief