PorscheCharge-o-mat Pro Battery Maintainer and Charger

Works very well and extremely convenient to simply plug into the power socket to keep battery topped up. If your Porsche’s not a daily driver, don’t learn the hard way that it’s a pain to get the “frunk” of a modern 911 or 718 open once the battery runs down! (You have to connect 12 volt source to a point on fuse block under dash). Your battery WILL run down if car is not driven weekly. And of course the “frunk” is where the battery lives….The charger is overpriced compared to the generic model, but if you want the Porsche labeling, you pay for it. At least It does include the nice protective rubber bumper and car plugs, which is extra on base models. The only flaw is that in the event of power loss the charger does not return to “on” status after power is restored, so if you’re away for a while or don’t notice, your battery will run down even though charger is connected and plugged in. Some of the other models of this brand return to charge status when power is restored, like this one should.Unlike other reviewers, I have had good success with this brand charger lasting for years under continuous use. I have 5 of them, several over 6 years old, that are still going strong. I have not had the same success with other brands.

The ability to charge and keep charged a battery through cigarette lighter is genius. Access to battery terminals in the newer Porsche requires the removal of panels to access the battery terminals. So convenient

Perfect accessory battery tender

I don’t think much of it. I am frequently out of town for a few weeks at a time. So I need a charger to keep the battery up. Problem is , I live in an area where the power goes out often. Even a short power interruption shuts the charger off. It has to be reprogramed. I am not home to do that ….so…dead battery. Should automaticall return to previous setting when power is restored. I have other chargers on other batteries that reset without a problem. Not recomended

I have had a Porsche charger since 2008.... that one finally quit working so I bought this one for my car. It works great, simple to use and maintains the battery during the winter while the car is stored

Does exactly what it says. Great unit.

Pretty good option for car storage but it does take a awhile to give a full charge. Also, it would have been better if it came with battery clips instead of just cigarette lighter plug in.

Very easy to use.