Will this maintain 2) 12v batteries thru my lighter? They both charge off the alternator as I drive. Thanks!
1867174
I don't know about that one. I've always hooked up the 12V battery directly to the solar charger. A lighter adapter didn't come with the solar panel.
1867175
Yes it will maintain you batteries, I assume your batteries are wired parallel. For reference .... it takes a good sunny day to recharge a battery that is one fourth discharged or in your case with two .. probably two sunny days.
1867176
I am maintaining a 1000 CCA Industrial/deep cycle battery on my tractor at the moment but I have used it on my Dodge Ram 3500 Diesel with two batteries and it worked fine as far as I could tell...I had no problems. Hope that helps.
1230125
No... this will only maintain a battery. Need a 20A instant charger... there are ones out there. Just use a car battery and jumpters.
1522846
Usually the lighter on a vehicle is tied to the ignition switch. If the ignition is off, so is the lighter. If you have a voltmeter, you can check this out by probing the lighter socket, the edge is negative and the center (deep inside the socket) is positive. With the ignition off, if there is no voltage shown on the meter, you cannot charge the battery using the lighter socket.
907820
Yes. I use this product to maintain two car batteries (one charger for each) and it hasn't failed yet.
862511
It is a very good charger, i us it on only one 12v battery currently, but i see no reason why it would not maintain the charge on your batteries as long as they are hooked as a 12v system, i am sure it would be more effective it you did one at a time and cycled them through
1248960
I have a larger battery in my truck and this item will not keep it charged at all times. The charge is too weak. I doubt it can keep up as an on the go charger with 2 batteries......
2083569
Actually, I keep 4 charged, 2 are parallel wired joined by switch for engine/accessories and two separate for 24 volt trolling motor. Works great!
671212
It is rechargeable, works directly on 12v car cigarette lighter. It's very light, I recommend it.
1172797
The voltage is wrong you need a 12v panel directly to the car battery. Most cigarette lighters are off when the key is out. The purpose of those panels is to keep the power up and defray the loss of power from the car not being started each week.
1716052
Yes, As long as both batteries are 12volt then this should work for charging and maintaining them.
1356012
Yes, it will keep your battery fully chrged however it is NOT waterproof so keep it under the hood, or somewhere dry...If the battery is almost dead, (under 3 volts), the charger will NOT recognize it and won't charge.
2013790
Hello Brad, I live in northwest Indiana and gets pretty cold here too. Charging in my garage also. The maintainer is operating according to the manual. Charging both 12v and 6v batteries. This is my first year in use. I say go for it. Merry Christmas! Jeff
1308952
Robert the device plugs into your 12 volt adapter or cigarette lighter ...so there is always voltage there after you turn the car off I pull mine out a little so it does not make a connection that's the only way to disconnect from your battery. but there's no problem. I would highly recommend this product I love mine it is totally hands off thru your car speakers. Just like onstar
82406
If you have a car adapter (for the lighter plug) I would imagine it would. But the device uses constant power so using it while the car is off would probably drain your battery. But make sure the adapter you use will provide continuous power, if not you might get a lot of drops or disconnections.
596204
Yes, this is intended to remain connected to a battery 24/7 (whether in a car or out of a car) and it begins charging the battery when solar power is available and the battery voltage is 13V or less, then once the battery voltage is raised to 14V (showing it is charged) it will stop the charging. If you will be connecting a solar panel thru a lighter plug in a car (which seems to be the easiest place), I hope the lighter remains "on" without the keys in the ignition (otherwise your "charge" power will not be getting thru to the battery making putting all of this together pointless). If you were to start a car with the panels connected up, the panels may send their rated power to help start the car (during good daylight), but they won't put out any "extra" power (they are not a battery that "store up" power or such, they just give you what they can). Once the car is started, the car alternator should instantly recharge the batteries and the green light on this should instantly come on (showing that solar power is blocked).
1295636
no, it doesn't maintain the battery. my dingy has a pretty small battery (Honda Fit) and the only time I got the "low battery" warning was while driving through the mountains and using the brakes constantly. After that, I ran a hot wire from the motorhome into the car and attached a 12v outlet on the end (make sure you get an outlet rated for the amps of the brake). No more issue.
1553235
It should not. Verify that the cigarette lighter socket is clean and clear of any debris and because of the how this unit works the car's engine should be running when this device is in use. The unit really needs 13.5 to 14.5 volts dc to be happy. The car's alternator can deliver that, the battery only delivers 11.5 to 12.0 volts dc max.