Battery Archives - UnderhoodService
Chassis Control Modules After Reconnecting Battery

To resolve the issue, fully disconnect the negative lead from the battery terminal.

GM No Crank After Auto-Stop Event

These concerns could be caused by a broken or loose engine ground cable/strap, which grounds the engine to the body.

Caring For AGM And Flooded Car Batteries

Faulty battery cables, if loose, corroded, or damaged, can lead to power drainage.

Alternator Testing For No Charge Conditions

Many alternator problems turn out to be nothing more than a bad connection at the alternator or a bad wiring harness.

Battery Management Means Knowing How It Ages

The battery may be fully charged, but you also need to measure how low the voltages go while the engine is cranking.

EV Opportunities

You are gaining and retaining many service opportunities with Evs.

The Sustainability of Lead Batteries

Learn about lead batteries and sustainable automotive practices. This video is sponsored by The Group Training Academy.

The Importance of Choosing the RIGHT Battery

Learn why the RIGHT battery is essential for modern vehicle tech. This video is sponsored by The Group Training Academy.

HV/EV Battery Pack Replacements

It is difficult to say when a battery pack will need to be replaced.

How Speed, Load and Slip Affect Voltages

Modern, computer-controlled charging systems found on today’s vehicles need proper test procedures – no guesswork allowed.

Batteries – AGM Failures

Providing your customer with the correct group size and type of replacement battery is more important than ever.

GM Stop/Start Vehicles

It is essential to understand what is different on these vehicles and how it might change your diagnostic approach.