The iPhone 11 has a battery capacity of 3,110 mAh—but there’s much more to know about its power efficiency and real-world performance. Many assume a higher mAh number always means longer battery life, but Apple’s advanced hardware and software optimizations often defy expectations. If you’re curious about how long your iPhone 11 lasts on a … Read more
Duralast Gold batteries typically last 3–5 years, but real-world performance depends on usage, climate, and maintenance. As an automotive expert, I’ve tested these batteries extensively to uncover the truth. Many drivers assume all car batteries are equal—but premium options like Duralast Gold outlast budget models. Extreme temperatures and short trips can shorten lifespan, though. Best … Read more
Seeing 13.7 volts on your car’s dashboard or multimeter is typically a good sign. It indicates your vehicle’s charging system is actively working. This voltage reading means the alternator is successfully replenishing your battery after engine start. Best Tools for Monitoring Car Voltage Accurately diagnosing your car’s charging system requires the right tools. We recommend … Read more
Lead acid batteries have powered industries for over a century, but are they still the best choice today? The answer depends on your needs. These batteries offer reliability, but they also come with trade-offs. Many assume lead acid is outdated compared to lithium-ion, yet they remain dominant in cars, solar storage, and backup power. Their … Read more
It indicates a failing battery. This voltage reading under load is a critical diagnostic result that signals your battery cannot hold sufficient charge. Best Battery Testers for Load Testing – Detailed Comparison Schumacher BT-100 100 Amp Battery Load Tester – Best Overall Choice The Schumacher BT-100 is a professional-grade, analog load tester. It applies a … Read more
Yes, a resting battery voltage of 12.9 volts is absolutely possible. This reading typically indicates a fully charged and healthy 12-volt lead-acid battery. It sits at the high end of the normal spectrum for a battery at rest. Best Battery Testers for Voltage Diagnostics Fluke 117 Electrician’s Multimeter – Best Overall Choice The Fluke 117 … Read more
For most modern vehicles, 14.6 volts is a normal and acceptable charging voltage, especially during a bulk charge phase. It is not inherently too high or dangerous for a healthy charging system. Best Battery Chargers for Safe and Effective Charging Using the correct charger is essential for maintaining safe voltage levels and battery health. We … Read more
Yes, 13.4 volts is generally a normal and healthy reading with accessories on. It indicates your vehicle’s charging system is working correctly under an electrical load. Best Tools for Diagnosing Your Car’s Electrical System Accurately measuring your vehicle’s voltage requires the right tools. A quality multimeter or dedicated battery tester is essential for reliable diagnostics. … Read more
If your car’s voltage gauge reads 13.5 volts at idle, it typically means your charging system is functioning. This reading is generally within a normal and healthy range for a modern vehicle. It indicates the alternator is working to power electronics and maintain the battery. Best Tools for Diagnosing Charging Voltage at Idle INNOVA 3721 … Read more
Yes, 14.3 volts is a perfectly good and normal charging voltage while highway driving. This reading indicates your vehicle’s alternator is working correctly to power systems and recharge the battery. Best Car Battery Chargers for Voltage Monitoring NOCO Genius10 – Best Smart Charger The NOCO Genius10 is a 10-amp fully-automatic smart charger with a digital … Read more