I am the owner of a 2005 Boxter-S, and like most owners who live in areas with inclement weather in winter, I park my car for much of the season. Even with everything off & the doors closed & windows up, the car has a significant current draw, and will deplete the battery after a week or 2. Throw in some below zero temps, and starting the car becomes a challenge. Now there are ways to preserve the integrity of the motor & everything else: fire the car up every once in a while, and drive it long enough to bring all parts up to working temperature. This will also take care of the charge in the battery. However, the slow drainage in the meantime, followed by the heavy current demand at startup will significantly shorten the life of the battery. Enter the Dual Mode Maintainer. This handy device will keep your battery topped up during the storage phase, and is convenient enough to use even during shorter periods (vacations, etc). It has a super long cord, voiding the need for additional extension cords. I checked the voltage with an accurate digital multimeter, and it maintains the battery right between 13.2-13.4volts, which should keep the cells happy for a long time. Also the unit is current limited so if it's applied to a partially depleted battery, the charge rate is nice & slow to minimize sulfation. The only downside: if your battery is depleted to the point that it won't start the car, plan on overnight charging. Overallan important, reasonably priced accessory.
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This is the same as the CTEK Multi US 3300 12-Volt Smart Battery Charger but with a Porsche logo and an inflated price tag. I use the Ctek in my 996 911 convertible during the winter months and it works extremely well. Go with the Ctek one and save yourself some money.
Best Deals for Porsche Dual Mode Battery Maintainer / Charger
I was in the market for a new battery/trickle charger for my Porsche and found this online
offered by Suncoast Porsche. Their price was $65 less than what the local dealer
was selling it for. It works as advertised and haven't had any issues since using it. I
give Suncoast a 5 star rating for their ease of ordering and especially the fact that it
was delivered in 5 days rather than the 10 days that is normally advertised. I definitely
would order again from Suncoast Porsche.
Honest reviews on Porsche Dual Mode Battery Maintainer / Charger
I have had repeated problems with new porsche with batteries and they kept telling me to get one
of these which is a little annoying (if they are necessary, they should come with the car). So I ordered
this one online and received as promised from Amazon Retailer and it works great. Hopefully problem
solved.
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Love this charger gets battery to full then automatically does trickle charges as needed. Its a hands off leave it plugged in...the only button I had to push was set to car mode and that was it. Seems to work great...a must have for expensive batteries these days.
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