Originally Posted by Eurosport Stabil in your gas tank is also your friend

Originally Posted by primetime Whats Stabil?

Product Features

• Keep your battery topped up with solar power, even if the weather is overcast or dull
• Interchangeable connectors: cigarette lighter plug and crocodile clips
• Durable ABS outer casing
• Built-in diode prevents reverse charging
• Suction cups for easy mounting
• Ideal for cars, caravans, boats etc

Designed to trickle charge 12V lead acid batteries with no additional running costs. Ideal for cars that will be left standing for long periods, as well as for maintaining batteries in caravans and boats. The built-in blocking diode prevents reverse charging from the battery to the solar panel at night.
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Technical Specification


Technical specifications: Peak output power:1W Voltage (@max. power):17.5V Open circuit voltage:21V Short circuit current:90mA Tested under standard condition: AM1.5, 100mW/100cm² @25° Cigarette lighter plug fuse rating:0.5A Cable length:2.7m (9ft) Dimensions:354mm (l) x 100mm (w) x 14mm (d) Weight:500g

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Frequently Asked Questions
Q- Not a question, an answer for someone who was querying if these items will charge a 6 volt bettery. Yes they will, I have used one succesfully (1.5watt) on my old 2CV 6v battery. As they are current limiting (short circuit), they are self-protecting. - Paul Hope
Answer- Thanks for the feedback.
Q- Can this be used on bmws? - demetri
Answer- Yes the product does support that.
Q- is this product suitable for charging caravan batteries whilst the caravan is in storage. - Ian Halley
Answer- Yes the product does support that.
Q- As the panel charges my battery, can I use it at the same time? - Thomas
Answer- yes you can (although for it to be effective it is recommended that the device you use does not consume more power than the panel is outputting to the battery).
Q- Does it charge gel cell batterys - M Dowsett
Answer- No sorry this product does not support that.
Q- This unit works great charging up my 20 amp 12volt lead acid battery and was a great buy!! :-) - Victor
Answer- thank you very much for the feedback
Q- Will the unit be effective through the windscreen, if placed on the dashboard of a car. - Jim Smale
Answer- Yes it will.
Q- I intend to use this for my boat.It will be exposed to rain, wind and salt water. Can it resist all these elements. - cammy
Answer- The item is not going to be suitable for exposure to salt water i am afraid.
Q- i see its not resistant to salt water but what about rain? - Rich
Answer- the item is ok for use in light showers but in heavy rain etc the item would need to be taken indoors.
Q- hi will this charger cut out when the battery is fully charged and is there a warning light to tell you so. richard. - richard
Answer- No, with such a low wattage it is not neccessa

Originally Posted by 70Sixter (Post 656533) I use a battery maintainer on my Boxster and BMW could have made the maintainer easier to use had they left the lighter plug "hot" with the ignition off.

Originally Posted by 70Sixter (Post 656533) I use a battery maintainer on my Boxster and recommend it for anything over a week. I plug my almost 6 year old battery in every time I park the car in the garage unless I know I'm going back out. It is not so much whether the car will start after X number of days. It is everything about battery life. And as has been said, these vehicles are electrical hogs. Batteries hate the discharge/charge cycle. The more recharge required the less life. BMW could have made the maintainer easier to use had they left the lighter plug "hot" with the ignition off.