Car Battery Alternator Tester, Test Battery Condition & Alternator Charging, LED Indication. Simple battery testing device, the best choice for DIY personal users to determine whether your battery is healthy or not. 6 LED 3 seconds display test results, simple operation, easy to understand 😃😃 Online consulting services, provide technical support, perfect after-sales service 🎆🎆 100% new original products ✈️✈️ Us warehouse delivery: NJ/CA. 3-5 days to ship all US.