myrrph
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Post by myrrph on Aug 29, 2014 12:23:26 GMT 10
Saw this at the local IT show. A bit expensive, at S$ 179 and S$280 regular, but 65Wh and 85Wh can power a Macbook Pro for 14 hours and 20 hours respectively. Meaning you could power a fan, a microwave oven, or a toaster for quite some time. A few of these with a GOOD solar panel (think goal zero) and you will have a portable power source for SHTF. Quiet too!  |
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overlord
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Post by overlord on Aug 29, 2014 13:46:51 GMT 10
That is a good find, myrrph! the toaster and microwave would be out of the question because the max 65W/85W wouldn't be able to handle the load of these appliances.
Having multiples of these would be good. Personally, I have 3 x 3100mah and I am getting 2 x 6000mah very soon. My critical issues are lights, fans, cellphone charging
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myrrph
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Post by myrrph on Aug 29, 2014 16:06:50 GMT 10
plug is using an china travel adapter which is cheap and good.... Looking to get a 65 Wh one for my MBA  |
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overlord
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Post by overlord on Aug 29, 2014 17:13:23 GMT 10
At that price, there are a lot more lower cost powerbanks if your intention is simply for USB lights, fans, and other USB based devices.
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overlord
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Post by overlord on Aug 29, 2014 17:14:26 GMT 10
plug is using an china travel adapter which is cheap and good.... Looking to get a 65 Wh one for my MBA The plug shown is an American standard which is the same that we use here. In Singapore, you use the British standard. |
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myrrph
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Post by myrrph on Aug 29, 2014 18:25:38 GMT 10
yup also the same as china mate  we use the british standard but easily solved with an adapter |
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myrrph
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Post by myrrph on Aug 29, 2014 18:40:18 GMT 10
At that price, there are a lot more lower cost powerbanks if your intention is simply for USB lights, fans, and other USB based devices. Thats the plan. I have 2 5600 maH batteries with area effect LEDs. I stopped having portable batteries with less than 5600 maH capacities coz it doesn't charge my mobile phones at least 1x. My current EDC carry 2 10k maH chargers (XiaoMi branded)  This will complement me because of the electrical devices it can run ... |
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overlord
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Post by overlord on Aug 29, 2014 20:15:39 GMT 10
The 3100mah I have can power a 10-LED USB Lamp or about 24 hours. It can also run my USB fan for about 4.5 hours, that's why am getting a higher capacity one.
It can also charge my smartphone 2x.
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myrrph
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Post by myrrph on Aug 30, 2014 1:37:30 GMT 10
yup. doubt it can charge my s4 and redmi note more than once
even with 5600, I don't trust it to charge it for too long.
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Deleted
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Post by Deleted on Aug 30, 2014 17:53:59 GMT 10
what is 'mah' ?
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Post by pheniox17 on Aug 30, 2014 18:00:15 GMT 10
Mah = miliamp hours
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Post by pheniox17 on Aug 30, 2014 18:05:08 GMT 10
Note: its supposed to be the lowercase m (upper case M = mega)
1mah = 0.001ah (amp hour)
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Post by Deleted on Aug 31, 2014 15:51:37 GMT 10
cheers!
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overlord
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Post by overlord on Sept 1, 2014 11:26:30 GMT 10
The reason I prefer this over the other rechargeable batteries is because these use Lithium-Ion batteries and not the NiMH ones that have a tendency to die on you if not monitored on a regular basis.
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Post by dellarius on Sept 3, 2014 23:13:12 GMT 10
This issue here is not the Amp Hour rating.. It's current draw. A usb uses aboat 5v.
So if you draw 2 amps on a 230v system that will be 92Amps on your 5v system.. That would blow up whatever device you had
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Post by pheniox17 on Sept 4, 2014 0:39:44 GMT 10
This issue here is not the Amp Hour rating.. It's current draw. A usb uses aboat 5v. So if you draw 2 amps on a 230v system that will be 92Amps on your 5v system.. That would blow up whatever device you had You must have misread the device, its a UPS (uninterrupted power supply) the technology has been around for years, What its primary purpose is, you plug your computer to it, and will protect the computer from surge/power outage So time to save that important database update, or that report that the boss wants yesterday Solar charging this will be a mission, its not designed for that (the last one I ripped apart for the sake of it, was 48v) |
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myrrph
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Post by myrrph on Sept 4, 2014 15:36:47 GMT 10
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overlord
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Post by overlord on Sept 4, 2014 19:40:03 GMT 10
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myrrph
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Post by myrrph on Sept 5, 2014 10:53:00 GMT 10
overlordI know right? DX is selling the same one for 45 USD too (or there abouts) the one I shared is 14W instead of 10.5W for the one you shared. I'm liking the 14W one more and more ...
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Post by dellarius on Sept 14, 2014 12:35:02 GMT 10
This issue here is not the Amp Hour rating.. It's current draw. A usb uses aboat 5v. So if you draw 2 amps on a 230v system that will be 92Amps on your 5v system.. That would blow up whatever device you had You must have misread the device, its a UPS (uninterrupted power supply) the technology has been around for years, What its primary purpose is, you plug your computer to it, and will protect the computer from surge/power outage So time to save that important database update, or that report that the boss wants yesterday Solar charging this will be a mission, its not designed for that (the last one I ripped apart for the sake of it, was 48v) Well that makes sense but the title clearly says USB We have UPS's at work that power all sorts of equipment, if you have the cash you can get a UPS that will run an entire home.. |
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