How much power do they draw? And will it kill my battery after a few hours?
753057
1.5A each. Depends on the battery. If one of these is installed in a car, most car batteries are only 25A/hr so it will run for 16 hours if you battery is fully charged. I have had one mounted on a box and ran it with a deep cycle marine battery for 6 hours with no problems. 2 lights would obviously cut the run time in half.
753058
that i do not know. nothing seems to flicker, or dim when i turn them on. i actually have them wired into old aftermarket fog light wires.
753059
I use them as a back up light. Im guessing if you have the light on with out the engine it will kill the battery. Don't know how much power they draw. In my opinion the lights are great,very bright and easy installation. Good luck
1237264
I've never had mine die on me but I've taken it for a six hour trip and it had about 25% battery power afterwards so I'd guess maybe about eight hours in total.
795609
No. Just make sure that you unplug after a few hours otherwise it could damage the battery
987696
We usually don't use ours for more than 90 minutes of continuous use. They could probably hit 2 1/2 hours with a decent battery, but it might be a stretch. I don't know if you need them to run continuously for the whole time, but we try to conserve power by turning them off when not actively in use. We're running them on Energizer rechargables.
1602957
that all depends on what you are powering. i use mine for just powering a cash register and night lights, and it will last all day. if you use it for like a coffee maker it will only last a couple of hours. it all depends on what the amperage of the item that you want to power.
929687
Mine have been used over 3 hours and are still strong. Using Energizer batteries.
1092318
4 AA 2500mAh batteries in 5 hours so 4 x2000 in 4 hours or 500 ma per hour. Won't make any difference what your charging source is, it only draws 500 ma
89647
Charge them over night and you will be fine.... Now how long do they last is another question haha
288841
You will need to charge it every day. I put mine on around 12am when I get in bed and I'm not sure when the battery dies, I'm asleep when it happens but with heavy use you will need to charge more frequently I plug them in every time I use them and they're always ready to go when I am, they charge fairly quickly IMO
1572992
Yes, most of these draw .6 Watts at idle. Try to get one with a power switch so you can leave it plugged in all the time.If your battery is old or small, this could drain it within a few days.. .6 Watt/12 Volt = .5 Amperes. .5 Amperes x 24 hours/day = 12 AH/day.Many lead-acid batteries are only good for about 100 Ampere Hours (AH), so if your battery is a couple years old already figure you will drain it completely in about 8 days!And note that most lead-acid batteries are permanently damaged (reduced output) by a discharge of over 30% of their rating, so yeah, that could get expensive! Yes, most of these draw .6 Watts at idle. Try to get one with a power switch so you can leave it plugged in all the time.If your battery is old or small, this could drain it within a few days.. .6 Watt/12 Volt = .5 Amperes. .5 Amperes x 24 hours/day = 12 AH/day.Many lead-acid batteries are only good for about 100 Ampere Hours (AH), so if your battery is a couple years old already figure you will drain it completely in about 8 days!And note that most lead-acid batteries are permanently damaged (reduced output) by a discharge of over 30% of their rating, so yeah, that could... » Read More Yes, most of these draw .6 Watts at idle. Try to get one with a power switch so you can leave it plugged in all the time.If your battery is old or small, this could drain it within a few days.. .6 Watt/12 Volt = .5 Amperes. .5 Amperes x 24 hours/day = 12 AH/day.Many lead-acid batteries are only good for about 100 Ampere Hours (AH), so if your battery is a couple years old already figure you will drain it completely in about 8 days!And note that most lead-acid batteries are permanently damaged (reduced output) by a discharge of over 30% of their rating, so yeah, that could get expensive! « Show Less
201895
I just used mine for 6 straight hours, and 2 hours the day before, still going strong. I would estimate 10 hours full charge to dead.
2201125
This is a very small device without serviceable batteries...no snap opens etc...it is recharged automatically via the usb cable. The batteries will last for at least one hour or longer...I let my dog run and have made videos much longer than an hour...and still have some battery left...I shut it off intentionally...never had a problem with not having battery power available...but I also make sure that it is fully charged before using...I leave it plugged into my computer before use...
433704
I don't know the power as I haven't a means to test it, but I'd assume that 500mA is what they provide. I do know that they provide power and I use thme to charge usb speakers, a small helicopter, usb headset and many other devices as well as a Nook HD+ and IPad all at the same time. I also use it as a hub when I'm on my desktop computer (usually on the laptop).
911438
Not sure of the amp draw but these things draw barely anything. They can run off a 9 volt battery for a long time.
144776
The battery is a CR2032 3V. It is one of those flat round ones. I had the balls on for about 5 hours and they still had power. I don't know how long they are expected to run on one battery. The batteries I bought for the couple that needed them were over $5.
478377
power draw is 4 amps @ 12 volts. So if you have an 80 amp-hr battery you'll get 20 hours.
423366
They will be ok. I usually charge mine over night, in the morning they are fully charge. Usually takes couple of hours. Once they are fully charge the charger turns off.