Batteries, Alternators, Wiring & Electrical
Shop the power products that support the system.
Buy batteries, high-output alternators, power wire, fusing, distribution, grounding, and related electrical products online or in store. SMS can also install and integrate the electrical support when the system or vehicle needs it.
Shop by electrical need.
Product-only purchases are welcome. Installation and system checks are available when the customer wants SMS to complete the work.
Batteries & ElectricalBrowse batteries and the available electrical-support products across the store.Shop electrical →
Vault Power BatteriesShop battery products for systems that need stable voltage and usable reserve.Shop Vault Power →
High-Output AlternatorsBrowse available vehicle-fit alternator products for higher charging demand.Shop alternators →
AmplifiersMatch the electrical products to the actual amplifier channels, power, and intended use.Shop amplifiers →
Amplifier & Wiring InstallationAdd power wire, ground, fusing, distribution, mounting, and safe signal routing.View installation →
Electrical Upgrade ServiceHave SMS evaluate voltage behavior, cable paths, battery support, charging, grounds, and protection.Book service →
Match the product to the way the system is used.
A daily system, a high-output bass build, a motorcycle, and engine-off demo use do not place the same demand on the vehicle.
Current DemandAmplifier efficiency, impedance, listening habits, voltage, and run length matter more than one advertised wattage number.
Charging & ReserveThe alternator supplies running power while the battery supports starting, reserve, and short-term demand.
Wire, Fuse & GroundCorrect cable size, protection, termination, routing, and grounding are part of dependable power delivery.
Where Music Matters
Buy the electrical products or let SMS install the complete power path.
Send the vehicle, amplifier models, battery and alternator information, current wiring, normal listening use, and any voltage or shutdown problems.