Good charger. I use it for RE bike. Hook the battery continuously to it when parked. Prevents battery drain during standby. Trickle charging helps charge an almost dead battery too. There is some wrong info going around this product that it is meant only bikes. That is not correct. The manual says it is rated for batteries upto 120ah. That covers all car batteries too. I have used to charge my accent car battery. You can change the charging current. C7 charger has more features, but it wrong to say that C3 will not work for cars. It works fine. The specs are well within the limits. I am an electrical engineer and i know what i am talking about.