VAULT POWER • SODIUM-ION • HARLEY LITHIUM • ELECTRICAL SUPPORT

A bigger battery is not the fix for every voltage problem.

The battery adds reserve and current capability. The alternator or stator still has to replace the energy the system uses, and the cable, grounds and fuse protection still have to move that current correctly.

We size the battery around the vehicle, charging system, amplifier demand and how the system is actually used.

Plan Electrical Support View Current Vault Power

Current Vault Power choices at SMS.

NA-20 • compact sodium support

A compact 20Ah sodium-ion option used in applications where space is tight and the charging strategy is appropriate.

Vault NA-20 →

NA-59 / NA-60 • larger system support

More reserve for larger car-audio electrical systems when the charging system and installation are designed around it.

Vault NA-59 → Vault NA-60 →

NA-100 • high-capacity sodium

A 100Ah sodium-ion option for systems that need substantially more reserve and have the space and charging support to use it correctly.

Vault NA-100 →

LI-HD28 / LI-HD41 • Harley lithium

Harley-focused LiFePO4 options where cranking, audio demand, fitment and the bike’s charging system all have to agree.

LI-HD28 → LI-HD41 →

Chemistry changes the charging rules.

Sodium-ion, LiFePO4 and AGM batteries do not all share the same charging behavior or voltage limits. We verify the exact battery, allowable voltage range, physical fitment, terminal layout and charging-system compatibility before building around it.

More reserve can keep a system stable longer, but it does not manufacture alternator or stator output.

Real SMS Vault Power work.

Harley audio electrical diagnosis before Vault Power battery upgrade by SMS Car AudioVault Power NA20 sodium battery installed in Harley audio system by SMS Car Audio

Harley • amplifier cutting off

The previous battery could start the bike but was not keeping up with the audio-system current draw. SMS corrected the battery support with a Vault NA-20.

Vault NA-20 →

Chevrolet truck with three Vault Power NA59 sodium batteries supporting the bass system

Chevrolet truck • three NA-59 batteries

Three Vault NA-59 batteries were used to support the truck’s bass-system electrical package.

Vault NA-59 →

Vault 41Ah Harley battery • video proof

Real SMS footage from a motorcycle electrical-support project.

Tell us what you are trying to power.

Send the vehicle or motorcycle, engine, amplifier list, subwoofer plan, current battery setup, alternator or stator information, cable size and how hard/how long the system is normally played.

Plan Electrical Support Electrical Service