Battery Diagnostic
At Your Location in ~30 Min

Is your car cranking slowly every morning? Did it die twice this week even after a jump? Dashboard battery light flickering? Before you waste money replacing the wrong part, find out what's actually wrong. iFAST Roadside Assistance brings professional diagnostic equipment directly to your vehicle—any hour, any weather. Our technicians reach you in under 30 minutes on average with conductance battery testers and multimeters to read your system live.

A dead car is usually one of three things: a worn-out battery, a failing alternator that isn't recharging it, or a parasitic drain quietly draining it overnight. We test all three on-site—battery state of health, alternator output, and parasitic draw—so you get a clear answer instead of a guess. Whether you're in a Scarborough condo garage, an Ajax commuter lot, or your own Oshawa driveway, we tell you exactly what you need before you spend a dollar.

The most expensive mistake drivers make is "parts-cannon" guessing—buying a new battery when the real culprit is the alternator, then breaking down again days later. A proper test ends the guesswork.

• Battery State-of-Health Test: We measure your battery's actual cold-cranking amps against its rating to see if it's genuinely worn out or just discharged.
• Alternator Output Check: We verify your alternator is charging at the correct voltage under load—a failing one will kill even a brand-new battery.
• Parasitic Drain Detection: If something is draining your battery while parked (a stuck relay, aftermarket accessory, or faulty module), we measure the draw to track it down.
• Clear, Honest Recommendation: You get a plain-English verdict—boost, charge, replace the battery, or address the alternator—with an up-front quote for any fix.

Stop replacing parts and hoping. One call to iFAST tells you exactly why your car keeps dying.

1. "It Keeps Dying" — Repeated No-Starts

Jumped it yesterday and it's dead again today? That points to either a battery that no longer holds charge or an alternator that isn't recharging it while you drive. We test both to pinpoint the real cause.
Keywords: car keeps dying Pickering, battery won't hold charge Ajax, repeated dead battery Oshawa.

2. Slow Cranking & Hard Cold-Weather Starts

Ontario winters expose weak batteries. If your engine cranks slowly when it's cold, we'll measure the actual cold-cranking amps remaining so you know whether it'll survive the season or strand you.
Keywords: slow cranking battery Whitby, weak battery cold weather Ajax, winter battery test Scarborough.

3. Phantom Drains & Warning Lights

Battery or charging warning light on the dash, or a battery that's flat after sitting a few days? We perform a parasitic draw test to find what's pulling power when the car is off, and check your charging voltage.
Keywords: parasitic battery drain Pickering, battery warning light Oshawa, charging system check Ajax.