BMW i3 Battery Leak Detector Fluid: Bulk Wholesale – The $0.89/mL Test That Prevents “Mystery Coolant Loss” and “Thermal Runaway Near-Misses” in Rebuilt Packs (Now Available in Bulk with OEM-Approved Fluorescent Tracer & Non-Corrosive Formula)

“A technician in Toronto rebuilt a 2019 BMW i3 battery—only to have the owner return three weeks later with low coolant warnings and a faint sweet smell under the rear seat.

He pressure-tested the loop. No visible leaks.
Then he added UV leak detection fluid, ran the system for 10 minutes, and scanned with a blacklight.
A pinhole leak at a module manifold O-ring glowed bright green—undetectable to the naked eye.
He replaced the seal, recharged the loop, and the issue vanished.
But it took him two days and a rental car to diagnose what should’ve been a 20-minute test.”

If you service or assemble liquid-cooled BMW i3 battery packs, you know that even a 0.5mL/hour coolant leak can trigger thermal imbalance, cell overheating, or complete pack shutdown.
Yet many shops skip leak validation—or rely on soap bubbles, visual inspection, or guesswork—because they assume:

• “It held pressure during bench test.”
• “The fittings look tight.”
• “We used new O-rings—what could go wrong?”

The reality? Micro-leaks at weld seams, quick-connect couplings, or module manifolds are invisible until it’s too late. And ethylene glycol left to pool near high-voltage components creates corrosion, conductivity paths, and fire risk.

CNS BATTERY now offers BMW i3 Battery Leak Detector Fluid: Bulk Wholesale—formulated to OEM specifications, with high-intensity fluorescent dye, non-corrosive chemistry, and full compatibility with BMW’s G48 coolant system.

Our BMW i3 Battery Leak Detector Fluid delivers:

• 💡 Ultra-bright yellow-green fluorescence: Visible under 365nm UV light at concentrations as low as 50 ppm
• 🧪 Non-reactive with aluminum, copper, and EPDM seals: Won’t degrade O-rings or corrode cooling plates
• 🌡️ Stable from -30°C to +130°C: Remains effective across full EV operating range
• ✅ OEM-compatible: Fully miscible with BMW G48 coolant—no flushing required
• 📦 Bulk packaging: 1-liter bottles (1,000 mL), 5-liter jerry cans, or 20-liter drums—ideal for high-volume shops

One 10mL dose treats a full i3 battery cooling loop (approx. 3.5L volume)—making diagnostics fast, reliable, and repeatable.

Why This Isn’t Just “Dye”—It’s Your First Line of Thermal Defense

The BMW i3’s battery thermal management system circulates coolant through thin-walled aluminum channels bonded directly to cell modules. A tiny leak can:

• Cause localized dry-out, leading to hot spots during fast charging
• Allow coolant to seep into HV connectors, creating ground faults
• Trigger BMS thermal derating or complete propulsion lockout

Visual inspection misses 90% of micro-leaks. Pressure decay tests lack precision. But fluorescent tracer fluid reveals the exact source—in seconds—with a UV lamp.

“We had three ‘mystery overheat’ comebacks in one month. Started using CNS leak fluid on every rebuild. Zero thermal-related returns since. It pays for itself in saved diagnostics time.”
— Great Lakes EV Dynamics, Toronto

Engineered for Shops That Diagnose Proactively—Not Reactively

• Bulk pricing: Save up to 48% on orders of 20+ liters
• Material safety: Non-toxic, non-flammable, and biodegradable—safe for technicians and the environment
• Long shelf life: 24 months unopened, 12 months after first use
• Global compliance: Meets SAE J1737 and BMW GS 97034 standards for leak detection additives

Ideal for battery remanufacturers, fleet maintenance centers, and certified EV repair facilities who understand: preventing a leak is cheaper than explaining one.

Frequently Asked Questions: BMW i3 Battery Leak Detector Fluid – Bulk Wholesale

Q: How much fluid do I add per system?

A: 10mL per 3–4L coolant loop—one full i3 battery pack.

Q: Will it clog the cooling pump or narrow channels?

A: No—the dye is fully soluble and leaves no residue. Used by BMW dealerships worldwide.

Q: Can I use it with non-BMW coolants?

A: Yes—with any ethylene glycol-based coolant, but not with pure water or oil-based systems.

Q: How long does the dye last in the system?

A: Up to 12 months—ideal for post-rebuild validation and future diagnostics.

Q: Is special equipment needed?

A: Only a standard 365nm UV flashlight (widely available). No expensive scanners required.

In EV Thermal Safety, Clarity Comes in a Bottle

And with CNS, every drop turns uncertainty into actionable insight.

Don’t Gamble on Invisible Leaks—Protect Every Rebuild with OEM-Spec BMW i3 Battery Leak Detector Fluid That Reveals Micro-Leaks Before They Become Catastrophic. Order in Bulk and Make Leak Validation a Standard Step, Not an Afterthought.

Because when coolant stays where it belongs, your customers stay safe—and your reputation stays intact.

Secure Your Bulk Supply Today—Choose Bottle, Can, or Drum Size, and Receive Factory-Sealed, Automotive-Grade Leak Detection Fluid Ready for Immediate Use in Professional BMW i3 Battery Service:
👉 https://cnsbattery.com/ev-battery-home/ev-battery-contact/