make sure the battery terminals are real clean and tight.
No, after the battery in your laptop is fully charged the power is cut off to it.
Take the battery out.
Is the battery fully charged?
Dead cell in battery or something is on pulling power from the battery. Disconnect the negative battery cable overnight with the battery fully charged (12.6 volts). If the battery is dead the next morning it has a dead cell and needs replacing. If however the battery is still fully charged then a light is on somewhere or a relay is stuck closed.
The battery has enough power to trim an entire football field 2 times.
Over time you will shorten the lifespan of your battery. Once it's fully charged if you don't need to use the battery just unplug it from the laptop and only work with mains power.
They all can but rarely freeze solid but cold temp does reduce power
Be sure the battery is fully charged before you start. A fully charged battery should read 12.68 Volts. If the battery is very low when you check the alternator output it will not give you an accurate reading.
maybe 30 mins
The alternator provides DC power for all the electronics and the engine. It also keeps the battery fully charged.
If your car has no power despite a fully charged battery, first check the battery connections to ensure they are clean and tight. Next, inspect the fuses and relays, as a blown fuse could interrupt power to critical systems. Additionally, verify that the ignition switch and starter motor are functioning properly. If these steps do not resolve the issue, it may be necessary to consult a mechanic for further diagnosis.
To charge a Black and Decker drill, first insert the battery into the charger. Plug the charger into a power outlet and wait for the battery to fully charge, indicated by a solid green light on the charger. Disconnect the charger from the power outlet and remove the fully charged battery from the charger.