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BAS hybrid
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<p>BAS (belted alternator starter) is a category of automotive <a href="/facts/Parallel_hybrid/BN43WXqs">parallel hybrid</a> technology that uses an <a href="/facts/Electric_motor/ArD7BGDa">electric motor</a> to contribute power to the <a href="/facts/Internal_combustion_engine/Ju4BXzj0">internal combustion engine</a>'s <a href="/facts/Crankshaft/oYCe9nB3">crankshaft</a> via a <a href="/facts/Serpentine_belt/4CCyAmoV">serpentine belt</a>. By mounting this motor generator unit in the conventional location traditionally used for the standard automotive <a href="/facts/Alternator_(automotive)/PaxsaKHP">alternator</a>, it permits a low-cost method of adding <a href="/facts/Mild_hybrid/PLgbW7nc">mild hybrid</a> capabilities such as start-stop, power assist, and mild levels of <a href="/facts/Regenerative_braking/hzhCxYlr">regenerative braking</a>. BAS systems differ from other mild hybrid systems as they are not run off the vehicle's crankshaft. </p>