Starting & Charging

Batteries, Alternators, Starters, Voltage Regulators

The Starting & Charging system consists of the battery, starter, alternator, cables, wiring, and related components like relays, solenoids, and voltage regulators. The battery provides power to the starter and ignition system when you turn the key. The starter turns the crankshaft so the engine builds enough compression to start, and the alternator recharges the battery and powers the vehicle’s electrical accessories when the engine is running.


Batteries are electrochemical devices in which a chemical reaction between two dissimilar materials creates a voltage. A number of positive and negative plates are immersed in an electrolyte solution of water and sulfuric acid. The positive plates are coated with the active material lead dioxide (PbO2), and the negative plates with sponge lead (Pb). The positive and negative plates form a cell element, and there are 6 cell elements in a 12-volt battery.

Featured Products

In conventional flooded lead acid batteries, which includes maintenance-free batteries, the electrolyte is in liquid form. If the battery is damaged and leaks, the sulfuric acid in the electrolyte can cause serious vehicle damage and burns if it comes in contact with your body. Gel cell and AGM (Absorbed Glass Mat) batteries are superior alternatives. In the gel cell battery, silica is added to the electrolyte to form a gel-type material, while in AGM batteries, the electrolyte is held in matting that is akin to a sponge. If the case cracks on a gel cell or AGM battery, no electrolyte will leak out.


We aim to provide our customers with the finest Starting & Charging the industry can offer, which is why we accept no compromise when it comes to the quality. Created by the most reputable names in the industry, such as Quality-Built, Bosch, Dorman, Denso, Optima, Shuriken, Exide, Kinetik, Auto 7, Dorman, Sherman, Hitachi, Rein, Auto Metal Direct the Starting & Charging we've gathered for you feature precise design and everlasting durability.

Shop by Brand

The starter motor converts electrical energy into mechanical energy. The starter circuit includes the battery, starter, and cables, which are activated by a starter control circuit consisting of the ignition switch, starter relay, solenoid, and wiring. When you turn the ignition switch, the relay energizes the starter solenoid, which sends power to the starter motor. The starter drive meshes with the flywheel/flexplate teeth before the starter motor begins to turn. Most starter drives are the overrunning clutch type, which only applies force in one direction, so the engine cannot apply torque to the starter.


A belt from the crankshaft drives the alternator, and it uses this mechanical energy to create electricity. The electricity is produced when the belt spins the rotor, creating a magnetic field that induces a voltage in the stator windings. Alternators produce AC current, which is rectified by diodes and transformed into the DC current that recharges the battery and powers the electrical system. The voltage output of the alternator must be controlled. This is done by varying the field current. On older vehicles this was done by a separate voltage regulator, but on most newer vehicles regulator function is part of the ECM.

Shop by Category
Guides & Articles
Starter motors and alternators have a tough job. Starter motors are high-torque motors which must have the ability to turn over, or crank, an engine under varying weather and mechanical conditions. Without a functioning starter motor, you simply cannot start up a modern vehicle's engine.
By definition, an automotive battery is an electrochemical device that stores and provides electrical energy on demand. Electrical energy is produced inside the battery by a chemical reaction occurring between two dissimilar plates immersed in an electrolyte solution. When the battery is discharging, it changes chemical energy into electrical energy and releases...
Hybrids are everywhere these days and can be defined as, "any vehicle combining two or more sources of power which can directly or indirectly provide propulsion." Although all hybrid vehicles on the market today use batteries as one of the power sources, there are different mechanical layouts and operational approaches in the way electric motors function alongside...
Shop by Vehicle
Starters, Alternators & Batteries Reviews
Average rating:4.54.7 - 63 reviews
1990 Honda Civic
| Posted by | (Kent, WA)

Not much to say, Optimas are legend. My old battery was barely holding a charge and I wanted to relocate it into my hatch (1990 Civic) so it was time to upgrade. $180 is a little spendy, but a quality battery powering 2 1000w amps is worth it.

Was this review helpful for you? YesNo
Share this review:
View More