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DC House 48V 50AH batteries x2 for $640 on ebay

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Siamac

Solar Enthusiast
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Nov 12, 2023
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548
Location
Hood
Supervstech said:
How are they under 55lbs?
Click to expand...
One of their infographics say they're 58.42 Lbs.

I have never ran a capacity test on either of the two that I own (though I did just recently install a Victron Shunt into the system, though they're at my cabin and I don't readily have access to that data) but I've seen 3.5+kWh going into these batteries when reading the screen on my Chargeverter.

I know that's not what you asked, but the capacity could be an indication that they're not lying about what's inside.
 
Siamac said:
B

Thread 'DChouse 48v 50ah lifepo4 battery info'

i am looking to upgrade to the dc house / eco worthy 48v battery x2 as in link is it worth going 48v direct or getting x4 12v 100ah wired for 48v


Click to expand...
It is ALWAYS preferable to go with the voltage you need vs having to add batteries together to achieve that goal.

Less money overall due to lower gauge wiring (and less wiring overall) and no need for external balancers for the series batteries.
 
They also have these in singles for $344.
www.ebay.com

48V 50AH Golf Cart LiFePO4 Lithium Battery Deep Cycle Metal Case Home Off Grid | eBay

12V 50AH Lithium Battery. 48V 50AH Lithium Battery. Batteries are easy to connect and batteries can be stacked upward to save space. The lithium battery can be connected in parallel. 48V Lifepo4 Lithium Battery.
www.ebay.com

I picked up one on Amazon for $375 to try because I prefer Amazon's return policy compared to ebay. I did message the store on ebay and ask how many can be paralleled together, though from what I've seen searching I suspect it will be 4.
 
doc3g said:
They also have these in singles for $344.
www.ebay.com

48V 50AH Golf Cart LiFePO4 Lithium Battery Deep Cycle Metal Case Home Off Grid | eBay

12V 50AH Lithium Battery. 48V 50AH Lithium Battery. Batteries are easy to connect and batteries can be stacked upward to save space. The lithium battery can be connected in parallel. 48V Lifepo4 Lithium Battery.
www.ebay.com
Click to expand...
The two pack of them for $639.99 is the best deal I've seen on these.



doc3g said:
I did message the store on ebay and ask how many can be paralleled together, though from what I've seen searching I suspect it will be 4.
Click to expand...
I think parallel on most batteries is infinite, but there's always a hard number allowed to be put in series due to the BMS needing to control multiples of its nominal voltage.
 
The DC House 100AH 48V isn't quite as cheap (at $679.99 shipped) as the 2x50Ah, but it does qualify for the 30% Residential Clean Energy Credit if you're in the US, so then it does become net cheaper if you qualify. I can't find any reviews, teardowns, etc. on this particular model, though. Anyone have any info?

In the same way, this LiTime 60Ah (at $609.99 shipped) just qualifies for the 3kWh minimum of the RCEC: it's a slightly lower up-front cost, but a worse deal on Kwh/$, but might be a good option on anyone wanting the tax credit but on a very tight budget. A cursory search again reveals little in the way of user reviews, though.
 
Andrewr05 said:
The two pack of them for $639.99 is the best deal I've seen on these.



I think parallel on most batteries is infinite, but there's always a hard number allowed to be put in series due to the BMS needing to control multiples of its nominal voltage.
Click to expand...

What gauge wire is needed to parallel the battery connections?
 
There seems to be so many GREAT deals on Temu for 48v batteries, 50ah to 300ah. My problem is can you trust Temu or Ebay for these batteries, no body knows anything about them.
 
Temu only works if you install their app, and I don’t trust that at all. Don’t care how cheap their prices might be if I can’t even get the prices without the app.

AliExpress tries to get you to install their app, and frequently sends you messages in their system that you can only read on their app, but you can still buy things using a web browser.
 
A.Fenderson said:
The DC House 100AH 48V isn't quite as cheap (at $679.99 shipped) as the 2x50Ah, but it does qualify for the 30% Residential Clean Energy Credit if you're in the US, so then it does become net cheaper if you qualify. I can't find any reviews, teardowns, etc. on this particular model, though. Anyone have any info?

In the same way, this LiTime 60Ah (at $609.99 shipped) just qualifies for the 3kWh minimum of the RCEC: it's a slightly lower up-front cost, but a worse deal on Kwh/$, but might be a good option on anyone wanting the tax credit but on a very tight budget. A cursory search again reveals little in the way of user reviews, though.
Click to expand...

I’m not sure that it’s necessary to purchase a >3kWh battery in a single box in order to qualify for the tax credit. The IRS instructions are pretty vague:

“Qualified battery storage technology costs.
Qualified battery storage technology costs are costs for battery storage technology that is installed in connection with your home located in the United States and has a capacity of at least 3 kilowatt hours.”

It would seem to me that any installed combination of batteries >3kWh would count as “battery storage technology “.

I’d love to hear if anyone has greater clarity on this.
 
Martimus said:
I’m not sure that it’s necessary to purchase a >3kWh battery in a single box in order to qualify for the tax credit. The IRS instructions are pretty vague:

“Qualified battery storage technology costs.
I’d love to hear if anyone has greater clarity on this.
Click to expand...
It has to be a total between all batteries, it wouldn't make sense otherwise.


But the chances of being audited to begin with are extremely slim, and then the chances of being audited and somebody even knowing the difference between one single 3kW battery in a system or a system of interconnected individual batteries totalling over 3kW are near zero.
 
Andrewr05 said:
It has to be a total between all batteries, it wouldn't make sense otherwise.


But the chances of being audited to begin with are extremely slim, and then the chances of being audited and somebody even knowing the difference between one single 3kW battery in a system or a system of interconnected individual batteries totalling over 3kW are near zero.
Click to expand...
I had no idea that they added batteries to this. That makes doing a bigger pack way more enticing.

Edit: 150k joint filing income limit. Bummer.
 
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