NOCO E403 — 12.25 oz Battery Cleaner & Acid Detector Spray

NOCO E403 — 12.25 oz Battery Cleaner & Acid Detector Spray

The NOCO E403 is a specialized foaming battery cleaner and acid detector that turns pink on contact with battery acid — instantly revealing hidden corrosion before it causes damage. Formulated to neutralize, dissolve, and remove battery corrosion from terminals, cables, hold-downs, and battery boxes, the E404 restores maximum current flow and reduces potential voltage leakage in a single step.

Key Features

• Acid detection formula — foaming agent turns pink on contact with battery acid, instantly revealing corrosion and acid presence
• Instantly neutralizes and dissolves corrosion — removes buildup from terminals, cables, hold-downs, and battery boxes
• Restores maximum current flow — reduces potential voltage leakage caused by corrosion buildup
• Easy aerosol application — foaming spray reaches tight spaces around terminals and connectors
• 12.25 oz aerosol can — plenty of product for multiple cleaning sessions

Ideal For

• Cars, trucks, motorcycles, ATVs, boats, RVs, and lawn equipment
• Routine battery terminal maintenance and corrosion prevention
• Diagnosing acid leaks before they damage surrounding components

Ships from Thunder Battery — Canada's trusted battery and energy storage dealer.