Running garden tools on 40-60V DC instead of 120VAC?

fredag den 28. maj 2021 kl. 00.32.55 UTC+2 skrev Don Y:
> On 5/27/2021 2:51 PM, Ralph Mowery wrote: 
> > In article <7a82705c-022e-4250...@googlegroups.com>, 
> > lang...@fonz.dk says... 
> >> 
> >> tirsdag den 25. maj 2021 kl. 19.51.11 UTC+2 skrev Joerg: 
> >>> On 5/24/21 4:59 PM, Lasse Langwadt Christensen wrote: 
> >>>> or something like this, https://www.amazon.com/Rockpals-250-Watt-Generator-Rechargeable-Emergency/dp/B075SSMR6K/6 
> >>>> 
> >>> That would require also buying a big 12V battery and soon you are out 
> >>> north of $400 just for getting rid of extension cords. Nah. 
> >> 
> >> it's a single box with battery, charger and inverter all in one, with 120V, 12V and USB outputs 
> >> though 250W might be a bit low 
> > 
> > It is almost misleading withthe word Generator. I think it does have 
> > solar cells for charging, but they would take a long time and not at all 
> > in the night. 
> > 
> > I would think that genertor would mean a useful generaor that would be 
> > gas or propane powered.
> If it is like the unit that I have, it can be charged from a wall-wart. 
> Think of it as a "generator" with a very limited "fuel supply". 
> I use mine to power a 60W-equivalent light fixture during outages; 
> I can carry it to any light fixture in the house. 
> 
> Of course, it's also good to stuff in a bug-out-bag, knapsack, etc.

we have one of these at work https://eu.ecoflow.com/products/river-portable-power-station?variant=37254607863972
it is basically a portable UPS it can charge directly from 230V , 12V or ~12V solarcells

output 230V, 12V and USB 

On 5/27/2021 4:03 PM, Lasse Langwadt Christensen wrote:
> fredag den 28. maj 2021 kl. 00.32.55 UTC+2 skrev Don Y:
>> On 5/27/2021 2:51 PM, Ralph Mowery wrote:
>>> In article <7a82705c-022e-4250...@googlegroups.com>,
>>> lang...@fonz.dk says...
>>>>
>>>> tirsdag den 25. maj 2021 kl. 19.51.11 UTC+2 skrev Joerg:
>>>>> On 5/24/21 4:59 PM, Lasse Langwadt Christensen wrote:
>>>>>> or something like this, https://www.amazon.com/Rockpals-250-Watt-Generator-Rechargeable-Emergency/dp/B075SSMR6K/6
>>>>>>
>>>>> That would require also buying a big 12V battery and soon you are out
>>>>> north of $400 just for getting rid of extension cords. Nah.
>>>>
>>>> it's a single box with battery, charger and inverter all in one, with 120V, 12V and USB outputs
>>>> though 250W might be a bit low
>>>
>>> It is almost misleading withthe word Generator. I think it does have
>>> solar cells for charging, but they would take a long time and not at all
>>> in the night.
>>>
>>> I would think that genertor would mean a useful generaor that would be
>>> gas or propane powered.
>> If it is like the unit that I have, it can be charged from a wall-wart.
>> Think of it as a "generator" with a very limited "fuel supply".
>> I use mine to power a 60W-equivalent light fixture during outages;
>> I can carry it to any light fixture in the house.
>>
>> Of course, it's also good to stuff in a bug-out-bag, knapsack, etc.
> 
> we have one of these at work https://eu.ecoflow.com/products/river-portable-power-station?variant=37254607863972
> it is basically a portable UPS it can charge directly from 230V , 12V or ~12V solarcells
> 
> output 230V, 12V and USB

That's considerably "beefier" than what I have.  Mine is really small...
weighs maybe 3-4 pounds?  I think it is limited to ~100W at 120VAC
(so, when powering a ~6-13W LED lamp, is good for several hours).
It has a USB output as well as a 12VDC outlet/inlet (in the form
of a "(cigarette) lighter" socket).  For me, it has utility as
another 12VDC power source for the portable bits of kit (radio,
comms, etc.) that I keep in my bug-out-bag.

[I have another device that is little more than a battery-in-a-bag
that also finds use -- even as an add-on power reserve for the
little inverter]

I also keep a 1KW inverter in the car that will run off it's
battery, in a jam.  But, have nothing that needs that sort of
power (at least, nothing that I'd want to lug with me in case
of an emergency)

On 5/27/2021 4:46 PM, Don Y wrote:
> [I have another device that is little more than a battery-in-a-bag
> that also finds use -- even as an add-on power reserve for the
> little inverter]

I also rescued one of these "portable battery boxes" from a scooter
that I scrapped (note the "handle" on the black box located under
the seat)

<https://www.jazzy-electric-wheelchairs.com/cache/1509733338387/resources/product/2390/picture.jpg>

Mine is the "extended duty" version -- taller to support larger
batteries.

It holds a pair of 12V batteries wired in series (for the scooter).
I've had to add a connector to access power from the top side
of the case (the existing case has a connector on its underside
to mate with the scooter).