Society of Automotive Engineers (SAE).
Sae.en
If you reverse the connection of the battery charger you will discharge the battery. You may be able to correct the connection and charge it properly, or the battery may be ruined.
If one terminal of a battery is connected to the frame of the equipment in which it's used, the connection is generally made with the ground, and this is called a ground connection. It refers to the reference point from which all other electrical voltages are measured.
-- battery -- battery cable -- connection between battery cable and battery A fault in any of these would still supply the small current used by the lights and radio, but not the huge battery current required for starting.
A 12000mAh USB battery pack can be used for a tablet PC if it has the appropriate connector. Most table PC's use a proprietary connection which limits the type of battery which can be used.
It could be, but I wouldn't do it if it is contrary to a manufacturers recommendation.
How is your battery ? Try a battery charger , battery jumpstarter pack , or a battery boost and see if it starts . ( also, it could be a battery cable connection )
You may have a flat battery or a bad connection at the battery terminals.
battery cable connection , dead battery
SAE 30 as standard. SAE 10 for cold weather.
Any wire or other metal object which touches the positive (+) connection of the battery AND the negative (-) battery connection OR the metal bodywork will spark
Dead battery or a bad connection to the battery.