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expiredSiennaStep238 posted Oct 15, 2022 03:04 PM
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expiredSiennaStep238 posted Oct 15, 2022 03:04 PM

Duracell 3000 Watt High Power Inverter $240 at Costco free shipping - $240

$240

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Oct 16, 2022 11:15 AM
19 Posts
Joined Feb 2018
Oct 16, 2022 11:15 AM
kmcdoc99Oct 16, 2022 11:15 AM
19 Posts

Our community has rated this post as helpful. If you agree, why not thank kmcdoc99

It's a modified sinewave inverter FYI
2
Oct 18, 2022 01:52 AM
8 Posts
Joined Mar 2020
Oct 18, 2022 01:52 AM
StrongVest5805Oct 18, 2022 01:52 AM
8 Posts
How would I even power this? If I directly connect it to the 12v system of my car will it fry my electrical system?
Oct 18, 2022 01:57 AM
2,136 Posts
Joined Jan 2009
Oct 18, 2022 01:57 AM
cockadoodleOct 18, 2022 01:57 AM
2,136 Posts
[QUOTE=StrongVest5805;158320363]How would I even power this? If I directly connect it to the 12v system of my car will it fry my electrical system?[/QUOTE

Batteries....
Oct 19, 2022 04:33 AM
186 Posts
Joined Sep 2021
Oct 19, 2022 04:33 AM
LabRat810Oct 19, 2022 04:33 AM
186 Posts
Quote from kmcdoc99 :
It's a modified sinewave inverter FYI
Important info.
Also, it looks like it's specified as a 3kw-continuous, 6kw-'surge' inverter.
Neither, do I see a ~220+VAC output.

I've personally noticed that MSW inverters and UPS work fine with ActivePFC SMPS (like your desktop PC's), *only when* getting 200+VAC RMS.

Ex. My network equipment wasn't happy on a 'cheapy' 120VAC UPS; but using an international 230VAC UPS, everything works great.
(I'm a special case though, since I was lucky enough to have access to a 20A dual-pole ~240VAC 60hz circuit in my office/homelab.)
Last edited by LabRat810 October 18, 2022 at 09:37 PM.
Oct 19, 2022 11:16 AM
3,055 Posts
Joined Feb 2017
Oct 19, 2022 11:16 AM
RedmontOct 19, 2022 11:16 AM
3,055 Posts
So all you need to do is hook up a standard car battery and you can get 3000 Watts for about $300 total ($50 for the battery). To get 3000 watts from an Ecoflow system you need to spend about $3000. If you can run appliances from this then this seems like an amazing deal.
4
Oct 19, 2022 02:33 PM
119 Posts
Joined Sep 2011
Oct 19, 2022 02:33 PM
ht_daveOct 19, 2022 02:33 PM
119 Posts
Quote from Redmont :
So all you need to do is hook up a standard car battery and you can get 3000 Watts for about $300 total ($50 for the battery). To get 3000 watts from an Ecoflow system you need to spend about $3000. If you can run appliances from this then this seems like an amazing deal.
The inverter isn't the expensive part, it's the batteries if you want any kind of run time.
Oct 20, 2022 12:02 AM
2,890 Posts
Joined Dec 2007
Oct 20, 2022 12:02 AM
erishunOct 20, 2022 12:02 AM
2,890 Posts
Quote from Redmont :
So all you need to do is hook up a standard car battery and you can get 3000 Watts for about $300 total ($50 for the battery). To get 3000 watts from an Ecoflow system you need to spend about $3000. If you can run appliances from this then this seems like an amazing deal.
You are going to exhaust a regular car battery pretty darn quick pulling anywhere near 3,000 watts. laugh out loud

Also flooded lead acid batteries (car batteries) aren't designed to be depleted like this. They recommend not getting the battery below 80 percent of the capacity (around 10.5 volts) because taking the cycle any deeper will cause irreversible damage to the plates through excessive sulfation.

So yeah, you can use your car battery in a pinch, but the inverter is the cheap part in your setup. The expensive part are, you guessed it, the batteries…
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Oct 20, 2022 12:31 PM
3,055 Posts
Joined Feb 2017
Oct 20, 2022 12:31 PM
RedmontOct 20, 2022 12:31 PM
3,055 Posts
Quote from erishun :
You are going to exhaust a regular car battery pretty darn quick pulling anywhere near 3,000 watts.

Also flooded lead acid batteries (car batteries) aren't designed to be depleted like this. They recommend not getting the battery below 80 percent of the capacity (around 10.5 volts) because taking the cycle any deeper will cause irreversible damage to the plates through excessive sulfation.

So yeah, you can use your car battery in a pinch, but the inverter is the cheap part in your setup. The expensive part are, you guessed it, the batteries…
Thanks for the help but I am thinking of emergency use —and of course not at the maximum of 3000 watts— for example running a refrigerator for 8 hours until power comes back and then recharging the battery. Also maybe running a hot plate long enough to heat a can of food. Marine batteries are supposed to be pretty powerful. Any idea how long it would take to drain a marine battery to damaging levels using it like this
Oct 21, 2022 10:41 PM
15,314 Posts
Joined Aug 2006
Oct 21, 2022 10:41 PM
Tourist1292Oct 21, 2022 10:41 PM
15,314 Posts
Quote from Redmont :
So all you need to do is hook up a standard car battery and you can get 3000 Watts for about $300 total ($50 for the battery). To get 3000 watts from an Ecoflow system you need to spend about $3000. If you can run appliances from this then this seems like an amazing deal.
You need a deep cycle battery for that purpose. At least a marine battery. They are around $100. Let me know where you find a $50 one with decent capacity for that purpose.
Oct 21, 2022 10:53 PM
15,314 Posts
Joined Aug 2006
Oct 21, 2022 10:53 PM
Tourist1292Oct 21, 2022 10:53 PM
15,314 Posts
This is good on paper but not very practical unless you hook it up with multiple batteries. If you just hook it up with one deep cycle or marine battery (80-250Ah), it would not last very long with 3000W output. Nevertheless, there are situations that you need such a setup such as a short outdoor event with high power equipment. In most cases, a lower output inverter would be sufficient for most appliances at home.
Last edited by Tourist1292 October 21, 2022 at 03:59 PM.
Nov 23, 2022 06:59 AM
277 Posts
Joined Sep 2015
Nov 23, 2022 06:59 AM
pmrowczynskiNov 23, 2022 06:59 AM
277 Posts
Seeing $299 in the western region Frown

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