RedFlow ZBM

Interesting. I haven't looked at their site to check costs, but worth looking further into.
 
They aren't vaporware, Fully charged looked at an install of them like a month ago. They are not what you'd call compact or portable.
 
Does look interesting.

I've never seen or heard of it here
 
thinks that i dont like, 10kwh per day maximum use, 30y expected life but only 10 years warranty - sounds fishy
 
Didn't they just have a recall ? or something that affected their delivery times something to do with the acid or some fluid inside the cells? I could be wrong don't have time to google atm
 
Just had a look at this - the Redflow Zcell unit (which is the home-based zinc-bromide flow system) is listed on the SolarQuotes comparison table... comes in at $12,600 for 10kWh...

According to that Youtube video posted by Droid126, the CEO mentioned the costs are not low enough as per their production levels at the moment for it to be cheaper...
 
12k sounds not like 3 times cheaper than lithium ion
14cells with 100 18650 in them are 1400 18650 in total, with 2Ah each you get 10,36kWh
samsung and lg powercells(20-30A) go for around 5 retail so we get around 7k retail-buy-price for the cells, still where is the 3times cheaper here?
 
Is that on of the Redox Flow type batteries? Looks like.

Redox Flow is one of the most promising energy storage solutions. Most of the prototypes won't go to market before 2018, though.

You need more space, but the interesting thing is that, simply put, you just add capacity by adding fluid.
 
especially

Drawbacks include:

The need to be fully discharged every few days to prevent zinc dendrites that can puncture the separator
The need every 1-4 cycles to short the terminals across a low impedance shunt while running the electrolyte pump, to fully remove zinc from battery plates
Low areal power (<0.2 W/cm2) during both charge and discharge which translates into a high cost of power.


it can be automated i guess but still, needs more stuff to keep you running while another one cleans itself..
 
Sentinal said:
Just had a look at this - the Redflow Zcell unit (which is the home-based zinc-bromide flow system) is listed on the SolarQuotes comparison table... comes in at $12,600 for 10kWh...

According to that Youtube video posted by Droid126, the CEO mentioned the costs are not low enough as per their production levels at the moment for it to be cheaper...
Click to expand...

It's looking worse than $12,600 from a few recent articles getting around. It also looks like they're backing away from the home market.

http://reneweconomy.com.au/redflow-...hium-batteries-on-price-in-home-market-77290/

I've seen a couple of articles mention more like $19,000 for 10kWh Zcelland expected life of 20 years. Not great, but I guess that's why they're going back to focusing on large business and small grid installs.

Nice to see an Australian company having a go at something like this though. Hopefully they can get the cost down for the residential stuff over time.
 
John said:
https://en.wikipedia.org/wiki/Zinc–bromine_battery
Click to expand...

Zinc bromine batteries from different manufacturers haveenergy densitiesranging from 34.454Wh/kg.[citation needed]


If an 18650 has about 2000 mah or7.4 watt hours, then 10kw hours would take 1351 batteries.

If Cost can be keptless than a dollar per battery, our diy powerwalls can be a 10th of the cost. The biggest cost is the inverter. So a 5 kw inverter is another thousand. The batrium is maybe 500$ and other assorted wiring and hardware and testersis another 1000$.

So all in the cost is about 1/4 to one half of redflow. The Tesla powerwall is a better off the shelf solution.
 
From what I've gathered, these RedFlow batteries are 48V as standard. That requires an inverter as well, so technically you shouldn't count that inverter as an added cost to 'our' 18650 cells...
 
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