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Re: Power bank questions
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Greg, I agree we must always look at the AHr rating of the battery when getting one of these units, nothing new.? Even for 12V batteries for our rigs we need to check these ratings.? But the internal battery is also a factor for the 12V and USB and other output units, not just the 120VAC output versions.? And there are a lot of units for 12V and USB and others for just single voltages. With these one must also check the max current rating.? I have some good 6000 AHr units that put out 12V and USB (12000 AHr for USB), but have 3 Amp output limits. But there are many applications where even a 100W unit will do as one wants.? An 8AHr battery is good for about any POTA event where like 5 hours use.
On Tuesday, March 11, 2025 at 09:04:48 PM EDT, Greg D via groups.io <ko6th.greg@...> wrote:
Mmmm, careful.? At 88 watt-hours, that's barely more than 7ah at
12v, not counting internal conversion losses.? The inverter may be
able to source 100 or 300 watts, but not for long.? 300 watts from
an 88 watt-hour battery will drain it in something like 15 minutes.?
Of course the FT-817/818 draws considerably less - you'd likely get
5+ hours of use - but there's no Tardis-derived magic here.? Start
plugging other stuff in, and the run time can drop very quickly. When looking at these "Solar generators", the important spec to look at is the watt-hour rating of the battery.? The AC output spec is just for the inverter; it's a limit for how much (peak) power can be drawn, not for how long. Greg? KO6TH Ron Wright via groups.io wrote:
Martin,
Yes there a lots of power
banks that put out USB power and 12VDC power and also 120VAC
power, all in one battery box.? I have 2 with 120VAC output
along with USB and 12VDC outlets.? They come in a verity of
power levels, mine are 100 & 300W.
There are other that can
power a FT817 for hours that put out USB and 12VDC.
Here is one on Amazon.? No
tsure if you need 120 or 240VAC.
On Tuesday, March 11, 2025 at 08:05:32 PM EDT, Kevin -
K5KTM via groups.io <ktmullens@...>
wrote:
Nice that it’s multi-use but that thing is huge.?
Kevin -K5KTM
On Mar 11, 2025, at 13:52, Martin HB3YDM via groups.io <hb3ydm@...> wrote:
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