8 Best Car Battery Chargers for AGM Batteries: Buying Guide
Find the best car battery charger for AGM batteries in 2026. Our buying guide compares smart charging, maintenance features, and value for U.S. drivers.
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How to Tell If a Car Battery Has a Bad Cell Using a Multimeter
Quick Owner & Driver Verdict Healthy car batteries rest at about 12.6 volts; a bad cell typically drags the reading down to about 10.5 volts. Use a digital multimeter to check resting voltage and cranking voltage before you decide on a replacement. If you want to know how to tell if a car battery has…
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How Long Should You Charge a Portable Jump Starter to Avoid Damage
Quick Owner & Driver Verdict Charge a portable jump starter until its manufacturer-approved full-charge indicator says it is done, not by guessing a fixed number of hours. Recharge it after every use and stop immediately if the pack gets hot, swells, leaks, or smells unusual. How long should you charge a portable jump starter depends…
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Can the TOPDON BT200 Test Lithium Batteries? What to Know
Quick Owner & Driver Verdict No, the TOPDON BT200 is generally not the right choice for lithium battery testing. It is usually best for 12V lead-acid batteries, so lithium owners should verify chemistry support before buying. Can the TOPDON BT200 Test Lithium Batteries? Not in the way most drivers mean it. The BT200 is built…
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Can you leave OBDLink MX+ plugged in? Safe or not for daily use
Quick Owner & Driver Verdict Yes, many drivers can leave the OBDLink MX+ plugged in if the battery is healthy and the vehicle sleeps normally after shutdown. Unplug it when the car sits for long periods, the battery is weak, or you want to avoid extra standby draw and privacy concerns. Can you leave OBDLink…
