How long can you run the fan on just one set of eight D batteries?
1959553
We used it for three nights in a tent. It ran all night for the three days without changing batteries. The batteries were Duracell.
605736
that actually maeand that if you install four 18450 Li Ion batteries in a proper holder and a plug that fits then (or solder them together, yourself) you would be able to get this device running for up to eight hours off batteries...
2234546
It depends, of course, on the power requirements of the fan and the available sunlight. This unit will provide about 0.18 amps of current flow at 12 volts with a reasonable amount of sunlight during the day. For the application you described, it might be best to hook this unit directly to your fan, bypassing the battery. In this manner, there would be zero chance of running down your battery -- at night the fan won't run and on really heavily overcast days it will run at reduced speed or not at all; which would not be a problem since solar heating would not be an issue.
1927855
It depends on what brand of batteries you use. I use my fan on and off when I get hot flashes for 3 to 5 minutes at a time all day long. With Duracell batteries 2 batteries will last up to 5 days like this, although the cheap batteries that come with the fan only last a couple days. Also the fan will blow much better with the duracell or energizer batteries. You can really tell the difference. If you are purchasing for hot flashes I highly recommend this fan. However eventually the blades need to be repositioned ( squeezed together, no big deal ) or it wont blow as well, straight at you. I usually replace the fan with a new one every couple of months so stock up It depends on what brand of batteries you use. I use my fan on and off when I get hot flashes for 3 to 5 minutes at a time all day long. With Duracell batteries 2 batteries will last up to 5 days like this, although the cheap batteries that come with the fan only last a couple days. Also the fan will blow much better with the duracell or energizer batteries. You can really tell the difference. If you are purchasing for hot flashes I highly recommend this fan. However eventually the blades need to be repositioned ( squeezed together, no big deal ) or it wont blow as well, straight at you. I... » Read More It depends on what brand of batteries you use. I use my fan on and off when I get hot flashes for 3 to 5 minutes at a time all day long. With Duracell batteries 2 batteries will last up to 5 days like this, although the cheap batteries that come with the fan only last a couple days. Also the fan will blow much better with the duracell or energizer batteries. You can really tell the difference. If you are purchasing for hot flashes I highly recommend this fan. However eventually the blades need to be repositioned ( squeezed together, no big deal ) or it wont blow as well, straight at you. I usually replace the fan with a new one every couple of months so stock up « Show Less
2063730
just make sure you have enough batteries to support the startup draw of the appliances or your inverter will kick out for low voltage, even if your battery is fully charged. I would say at least 3-4 batteries at least for them three items, maybe more, depending on the size of the ac's and fridge
1964036
If you mean a battery with a 20,000 mAh capacity and a fan with a .400 A continuous current drain, then the battery could power the fan for 20,000 mAh/400 mA = 50 Hrs
2134786
The batteries needed are two D cells, preferably alkaline. A set of batteries should give you 20-25 hours of running time.
1762054
I have 2 sets on my pontoon and am adding 2 more I will definetly run a secon battery, but if you put a switch on them and use them for 2 or 3 hours, you could probably get by with one battery, hope this didn't muddy the issue to much . It's always nice to have a extra battery on board, in case your starter battery decides to belly up. Good luck and enjoy !
888638
unfortunately this fan is LiPo batteries which is DC your house would be AC you'd be better off looking into electronics shop for PC computer fans amazon has them. hope that helps
587229
Stewart, this fan consumes too much battery power, suggest you use a small fan like used on a computer, mine works fine. Dennis
1912637
I run 10 units. Each runs 20 to 30 minutes three times a week with occasional manual runs in between. My Batteries tend to last 4 to 6 months, even longer sometimes. If you're running 1 unit 7 hours 7 days a week that sounds like a heavy load on the battery.
811108
I have a 8 inch battery powered fan that takes 6 watts to run. This should do the trick.
1020872
Hi ShirleyMy experience with this cooler is with TWO deep cycle batteries wired in parallel. With this set up the frigerator will run for four to five days. It all depends on how many times it's opened and closed.
1105059
Not long enough. My recharges never worked.I use a battery pack to run the fan.
1694644
that would depend on the number of batteries storing the power and how much power you use. For my 37 foot camper, I use 8 batteries and it lasts till bed time unless I use power tools. Runs lights, fridge and tv without issue.
345647
Use the cable to plug into vehicle power, if at all possible. I wouldn't recommend D cells because the fan draws about 1 Amp, so the battery life will be only an hour or so of operation. If you must use battery power, then get a small motorcycle lead acid rechargeable battery and wire it appropriately. In the extreme, deep-cycle batteries would be better, and if cost is not important, you could even use photocells.
641417
Rajesh, The run time depends on the size of your battery not the inverter. Joe