At 4000 watts how big does the car battery have to be and if I charge from but do not use while running a device how long will the battery last ?
994318
If you have a battery with the capacity of 120 ampere-hours and you draw 10 amperes continuously, the battery will last for 12 hours. Divide the capacity in ampere-hours by the continuous-amperes being used and you will get the length of time that the battery will last-that is if you do not charge it. The question of 4000 watts does not enter into this equation. However the theoretical amperes that this 4000 unit will put out will be-- 4000 watts divided by 120 volts equals 33.3 amperes. I suggest that, from your car, you do not draw 33 amperes at 120 volts however.
994319
I bought the 500watt vs, not 4000w. I can tell you that the stock battery in a 2011 Focus was drained if I left the inverter on over a weekend, and then just overnight. I put a slightly larger battery in the Focus, and have been ok for the last year or so.....I recommend that you turn it off when the car is not running for a long period of time.
1116233
A 10Watt Solar Panel with the charge controller will definitely keep a car battery charged, and can do so through the cigarette lighter. You can either make up a cig lighter plug, or buy an adapter. Ideally, I would say park the car (if you can,) facing in a South by South West angle, and run the wire to the solar panel outside the car (you can lean it on the windshield and use the wipers to hold it.) I can't say for sure how long it would take to charge the battery from a deep discharged condition. Usually a panel like this is meant to keep a battery "topped off" in long term storage. Believe it or not, it will work with the solar panel on the dashboard of the car, but will take twice as long. Again, for a long term "keeping the battery topped off typ of charge," it should be fine. The idea of the charge controller, is that it senses when the battery reaches a full charge and it dissipates the voltage so the battery doesn't cook. I hope this answers your questions.
150766
You must plug it into the cigarette lighter of your car to work and the car must have a good working fully charged battery in it. It will work with the car turned off as long as your car battery is fully charged. BUT it will in fact drain your car battery if you use it while the car is turned off for a long time. I have used it for up to 30 minutes to charge a cell phone, and I've used it for about 20 minutes to run my lap top, both times with the car turned off and I had a fairly new car battery but I would not go any longer than that and I would not use it with the car turned off if your car battery is not new or is not a high quality brand.
356616
That is the battery life. If your device draws 1.4 amps the battery will last one hour.
392730
i do not recommend pluging into car lighter plug. the unit draws too much power. it comes with clips to hook directly on car battery terminals. they do come smaller and can be plugged into lighter but they have less power (watts). figure out hqw many watts you draw and add 20 percent more and buy a power inverter with that power draw. you can not draw more power than the inverter puts out or the power inverter will blow. these power inverters are great when power goes out. you can run 25 watt floresent bulb for over a day with them on a mid size charged car battery, or even a tv. you do not need to keep a generator running all the time. i have two car batterys charged all the time if power goes out. i also have portable solar pannels 12 volt to charge batterys. this is a hobby for me.
1988784
I use a heavy duty car battery with my 12v power inverter and so far it has keep the battery charged.I am very happy with mine.
722805
verry good about 16 hours running on battery set on 2 , iit is goo to run it off your car battery when can and save battery. donot sit on ground , keep verry clean. i have had mine for 5 years now and no problem with it.
150488
At 80mph still loud enough to listen while cruising down freeway to work. As long as it's a 12V battery you're golden. Most power sports batteries are rated around 15Ah (amp hours). Depends on the device being powered the Ah rating means if your device requires 15amps to operate, the battery will power it for approximately an hour (that is if it can discharge at such a high rate without exploding). The Boss MC400 draws a little less than 1/2 an amp (500mA). A fully charged battery will run this system 25 to 30 hours without requiring charging.
2087704
As long as you don't have anything plugged in that is turned on and using power then you should be fine. It would draw very low power without anything turned on. I wouldn't think it could come close to draining a car battery unless you didn't crank the vehicle for weeks at a time.
983803
Didn't measure it but have had a few electricians tell me you could hook a million of these things up to a car and it will barely use your battery. I know I have mine on all the time and haven't killed the battery yet!
1606652
This works as a battery maintainer, not a battery charger. If you want to charge a battery for a power inverter, you need a much larger solar panel. To put this in perspective, this provides around 2.5 watts maximum. The 12v power plug in most cars is capable of more than 100 watts.I have mine attached to a deep cycle RV battery and it will barely maintain the charge, even with the battery disconnected fro the trailer.
1492100
Your question makes it look like you think the inverter is charged. It is not a battery and does not store energy. It connects to a battery. If you are asking how long your car battery would last using the inverter to power the devices you list it would depend on your battery. Each battery has its own specs.
2171698
I can only tell you what I did. I have a 400W inverter and a 12V car battery. I use this in my small horse barn that I wired for three bulbs and an outlet. There are 3 small watt bulbs. The panel keeps the battery at full charge with no problem. I don't use the electric all the time, and for only short periods when I do, so I don't know how long the charge will last.
179103
Not exactly sure, but it lasted me for four separate runs (milage was 5, 10, 6 and 6) over an eight day period on "best" setting without a charge. Have also run with it over three hours straight with lots of charge left. The times should be listed somewhere in the product specs.
1484393
On a 12v car battery. While the vehicle is running, it should be 13.5-14.4V and while off, should be 12-12.5V
470165
I hope this helps??? *Power: 10 Watts, 75 Lumens - 7.4 Volt / CE Approved *4400 mAh Rechargeable Lithium-ion Battery *Working Time: 3-4 Hours *Charging Time: 4-5 Hours Do not over charge it will reduce the battery life OK
806463
1-5 milliamps. It varies from unit to unit. It doesn't change between modes. If your source of power is a battery, take the amp hour rating and divide by .005 amps to estimate worst case how long the battery will power the device. A 5 amp hour battery would last 5 / .005 = 1000 hours.