Parasitic Draw & Electrical Drain Testing

Some battery drains hide in plain sight. Battery SOS offers Parasitic Draw and Electrical Drain Testing to uncover unseen power loss caused by faulty relays, lights, modules, or wiring issues.

Our mobile diagnostics include advanced parasitic draw analysis and AC system drain tests to pinpoint the exact cause of recurring dead batteries or unexplained power loss. We measure current draw accurately and trace it back to the component responsible.

Perfect for vehicles that won’t hold a charge, experience random power loss, or repeatedly need a boost, this service eliminates guesswork and helps avoid unnecessary battery or alternator replacements.

Diagnose the invisible—Battery SOS keeps your power in check so your vehicle stays ready when you need it most.