Review on 🚗 RD510 3-in-1 Car Battery Tester, Desulfator & Regenerator | 12V 4Ah-100Ah Smart Automotive Charger with Pulse Repair & Trickle Charging Capabilities by Gary Duncan

I had another tester that said a good battery is bad. Until this happened. He checked the battery as good. I like having something fixed (although I don't need it yet) and testing the battery and charging system. But I also thought it would do what other chargers do, charge in the car and keep charging. If that's done, I don't know how. Every time I try to charge the battery it says to disconnect it from the car first. Well, I don't always want to do that. I have other chargers and helpers so I'll leave this for testing. I think if they redesigned it to charge and service batteries in a car it would be more useful even if it was a bit bigger and more expensive. Despite this, he charges batteries that are not connected to anything and tests batteries and charging systems in the car. I give him three stars for that, but I was disappointed when he didn't charge my battery while sitting in my car.