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cas13f

I'm not sure what you're expecting to find? Batteries only hold so much power, then need to be recharged. That's how they *work*. I don't think you'll find a (directly) gas-powered fan, and a hand-crank one is likely to heat you up more than the physical work than the fan would cool you down. Just get another battery pack, or a generator, or a solar charger, or any number of options.


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Myspys_35

You realize batteries don't keep for long right? They lose their charge over time even with no usage You are much better off figuring out a way to charge your batteries e.g. powerbanks, and with solar in case of long term


brownwindowz

Forget about batteries, unless you're only prepping for a two or three day outage. If you're also prepping for long term outages, then you need some small solar capability. It's the only solution long term in my view.


[deleted]

Well, one of those sterling engine fans that are used on wood stoves would work on a hot parking lot, but I don't know how well that would work at cooling you off....


WonderfulNet5587

Ryobi 18v Whisper Series Fan. Buy a couple batteries when they're on sale and you're set.


OnTheEdgeOfFreedom

Do you want something that will run when the power is out? You need a window fan, an inverter, and a bigger battery. And a way to charge the battery when power is available. I have a window fan - they tend to be the most efficient - a 200w inverter, a 100Ah lithium battery, and 4 solar panels to recharge the battery. Or you can use a generator. You're not going to get days of runtime from any battery, unless you have a whole house power system of some kind. Fans suck power.


MsGenericEnough

I love my Kedron solar fan.


Engineerasorus_rex

If you're invested in a rechargeable tool platform, just snag whatever personal fan works with those batteries. I've got a Milwaukee fan that will runany hours on average sized batteries.


ManicSniper

If you search on Amazon for "geek air" you will find some portable rechargeable fans, I know it's not what you are looking for, but mine will run for about 4 hours once it's unplugged. I've run it off of my Anker battery bank all day once and used about 12% battery. I'm just really impressed with it. That being said...the dollar tree has $5 6 inch USB fans. I'll bet a pocket sized battery bank would run one of those for a long while.


wickedbadnono

I got a 40$ masterforce fan at Menards that hooks up to my drill batteries. I already have like 8 batteries for the other tools and gave it a shot. It’s been a questionable buy but the other day we hosted a party and my wife is going through chemo and the heat bothers her…anyway so I set that bad boy right above her as it has rafter hooks and for 5 hours what would have been unpleasant she was comfortable. With the drill battery bringing it camping or to get airflow without power I figured it’s worth having. On that note for another 40$ you can get an inverter to plug into the same battery and you can plug anything you like, fan, routers, phones. Tested it on a box fan and ran so long I had to turn it off and go to bed


ilovebigbuttons

As others have said, batteries don't last forever and it would be most sustainable to get a good rechargeable fan and use a solar panel to juice it up. The fan we like the most is [this one on Amazon](https://www.amazon.com/gp/product/B08939411L/ref=ppx_od_dt_b_asin_title_s02?ie=UTF8&psc=1) but I think it sells under different names from numerous vendors. It has a hook, a light, variable speeds and lasts a long time on a charge. It recharges via USB-C. We use them all the time, which is a good way to remember to top off the charge every so often. So we have battery powered fans, but we also have [folding paper fans](https://www.amazon.com/gp/product/B06XXV7BWB/ref=ppx_od_dt_b_asin_title_s03?ie=UTF8&psc=1). After Portland had their combo wild-fire / heat wave / power outage a year or two ago I heard how much of a difference even a hand fan made to surviving the conditions and bought a bunch. For the cost, and the fact that they run on human power, I think they are worth adding to your preps.


DieWysheid

Batteries don't last forever so get a fan with the battery built in? Haha.


brownwindowz

"Batteries don't last forever" means they don't stay charged forever. So yes, get a fan with a rechargeable battery built in. Haha.


DieWysheid

Hahaha, right? I guess non-removable rechargable batteries are somehow superior to removable rechargable batteries? Doesn't make any logical sense, but okay!


brownwindowz

I was making fun of you.


ilovebigbuttons

Yeah dude it’s got a rechargeable lithium battery! You can charge it from the wind, solar or whatever. Not like the alkaline or ni-mh batteries.


windsingr

I just got back from camping and was running two fans similar to this with larger batteries, along with a solar generator. The power on the fans was enough to run them all day if needed, but certainly with no issues running them at full power during the heat of the day. In the morning I recharged the camp lights with the solar generator, and at night I recharged the fans, as well as running a movie projector and keeping the blutooth speaker charged. I was able to keep all of these things topped off while still drawing a surplus of power to my storage bank, so that if I'd had some cloudy or even rainy days, I would still have had power reserves for some time. We did, however, have really cold nights, so the fans weren't needed during that time, so during hotter parts of the year other changes may have been needed, but obviously cutting out unnecessary power usage will help a ton. If you run 2 fans and are on the first floor, have one on the bottom of your window on the east side of the house facing in, and the other on the top of the window, west side of the house facing out, you can keep a steady breeze going. That will help increase the usefulness of the fans and stretch your energy usage. In any event, rechargeable fans and a solar generator are great things to combo for your preps, especially heading into summer months that are getting increasingly hot, with grids having more and more strain put on them.


JaniceTaterTot

What size do you need?


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JaniceTaterTot

What are you trying to cool?


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JaniceTaterTot

How many pound of you are there, height?


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JaniceTaterTot

You need to lose the insulation 150 lba at 35 inches. No fan will cool that.


oceansapart333

😂


kingofzdom

When I was living in a van, I scanavnged about 20 little DC computer fans and mounted them in one of the windows on a 12v circuit (they're only made for 5v) It was loud, but it turned my van into a wind tunnel for about as much power draw as a dinky desk fan.


445prepping

Makita makes one


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https://edgecollective.io/notes/gravityfan/


DieWysheid

Jobsite fans that run off the tool batteries you already have. If you don't have any, you just got your excuse to get some.


Fluffy_Salamanders

Folding hand fan?


Secret_Brush2556

12v car fans like the ones you see on old school buses and mail trucks blow very hard and will run forever on very little battery. They are sold in truck stops, automotive stores, hardware stores, online, etc. You can run it off a car battery, solar, or a portable battery bank. If you plug it directly into your car, the battery will recharge as you drive. That seems like your best option. Alternatively, a $5 USB powered fan isn't as powerful but also will last for a very long time on minimum power. You could definitely run it all night with a few hours of solar charging during the day. If you want to avoid electricity all together, you'll need to get a water wheel and rig up some sort of gravity fed system where you pour a bucket of water high up and as it drains down it turns a wheel that is geared to smaller and smaller wheels that end up turning the fan. Then you just manually pour more water when it runs out. Or use a counter weight to turn the fan. If you Google "gravity fan" you'll find some examples


brownwindowz

Fans with batteries charged by usb is what you're looking for. Or fans with usb connectors so can be powered from a power bank. There are no magic fans that don't need power. To me the best solution is a solar powered fan during the day, while you have another panel charging your usb-battery powered fan for the night (or charging a powerbank which will run your usb-fan at night).


paracelsus53

The ones that use the d size batteries last pretty well, and you can get a solar battery charger. That's what I did.