How many hours of direct sunlight does the panel need?
319062
8 hours of direct sunlight is the best, but I think it would light with 6 or 7 hours, It is a really good spotlight, I have had many but this is the best by far!
319063
I really don't know - what I do know is that if there is a day or two of no sun than the unit does not laminate. But when it gets sufficient sun the light is quite bright - especially for a solar unit.
319064
I have 7 of these in operation now (plus 4 more to be installed) and with normal AZ weather they all remain lit until the rising sun turns them off. Even with an entire day of grey skies they are on past bedtime. I recently bought one of the one watt models (SP2) and was very surprised to see it shine brightly for 12+ hours right out of the box! If it can run that long after possibly weeks in a box I have no worries about it's charging/storage ability in normal use.
563725
My office has window but usually luckily not direct sunlight. I was not getting the red light. I placed it in some one else's office wish gets direct sunlight and the red light came on. It seems that direct sunlight means just that. The suns rays most make contact with the panel.
1168391
Go get your past electric bill. Your bill will tell you how many kilowatt hours you use on average. Then take that to divide by the watts of the solar panel. There is usually 5 peak hours a day of sunlight. Then add 1 or 2 more panels just to be on the safe side.
1389240
No...It has to be direct sunlight. Also, the solar charger takes a long time to recharge the battery. I basically just used it as a secondary battery and charged it from the wall socket the night before. I think the solar charger would only help if you had several days to charge it. I left it on my dash once for a week and it barely charged half way.
1286375
No, It needs direct sunlight. Unless, you have a large window that gets 7-8 hrs of direct sun. You can always try it.
1226266
Mines been out since March and only sees 3 hours of direct sun light and the battery life is still at 100% . It is a small solar panel maybe 4"4". Hope this helps.
264927
I went with a 10A. It leaves headroom even with a second panel in parallel as these panels only put out about 3A in direct sunlight.
1055155
Sun-In-One solar powered Sign and landscape lighting kit can power and 12 or 24 volt bulb for 12 to 14 hours a day for up to three days with out sun. The size of the kit is dependent on the number of lights and there wattages.
778251
That's a hard question to answer,do you want to just keep the batterys topped off or is there going to be daily usage of the batteries also ? I would say with your constant sun 3-4 100watt panels would be enough. Mono or Poly panels don't matter with your amt. of sun. Go cheap ! They both will give you a life span of 25years give or take.Hope this helps.
632204
8-12 hrs depending on amount of direct sunlight, but u need to position it correctly ( not a big deal ) as sun moves. USB charging works very well to re-charge ...... its handy given you have off grid capability if required and it does't rain all week LOL
2257381
I've found that a 100-120 watt solar panel will be able to recharge this system from empty to 80-90% full in a good sunny day's worth of sun. It takes the full day to do it and if it's cloudy or worse then expect 2-3 days depending on conditions. You will need to add a solar charge controller to help with the task and to protect the battery from being over charged.
148161
Of course friend, the panel is high efficiency, full sun generates 22 volts, you need a charge controller 12 Volt so you do not overload the system, it will keep you charged and when the battery is charged, disconnect, which prevents damage to your batteries!
157918
I can not say for certainty and I would not want to lie. I am not awake before dawn. I only know the lights come on at dusk and are shining brightly (a "white" light, not a "warm" light) at 11 pm when I go to bed. I do believe it is important for the solar panel to be located in such a manner to receive as much direct sunlight/charge throughout the day to perform the best at night.
912120
50 watts from this unit is assuming a bright sunny day. However, a 12V / 9Amp Hour battery should be able to fully charge during the day....This will give you 3-4 hours running your 3x10 watt lamps during the night. Make sure you connect your battery to the Solar Panel via a charge regulator.
854283
it takes 6 to 7 hours of direct sunlight- you would have to re-position your car every few hours.
2257378
Yes, I use a large panel at home and it can fully charge the batteries in about two hours in direct sunlight. I have a small 40watt panel that I used out in the field and it kept my ham radio running all day without a decrease in stored battery power.
1477700
As long as the solar panel gets a few hours of direct sunlight, the lights stay on all through the night.