Jump starting relies on the transfer of electrical power from a working vehicle's battery (called the "donor" battery) to the dead battery (the "recipient" battery) through jumper cables. The donor vehicle's battery provides the necessary electrical charge to start the recipient vehicle's engine, which in turn charges the recipient battery.
However, if the recipient battery is completely drained, it may not be able to hold a charge or accept power from the donor battery. This is because a battery that is completely dead may have internal issues or severe damage, such as internal short circuits or deteriorated plates, which can prevent it from receiving and storing an electrical charge.
In cases like this, a battery replacement may be necessary. Attempting to jump-start a completely dead battery might not work or could potentially cause further damage to the electrical system due to the high electrical current demands during the jump-starting process.
It's important to properly diagnose the condition of your car battery before attempting a jump start. If the battery is simply low on charge, jump-starting may help, but if it is completely dead or damaged, a jump-start may not be feasible and a battery replacement might be required.
