Re:Battery Pack Prices Fall As Market Ramps Up
by driverdan on Thursday December 05, 2019 @06:37PM
(#21717874)
That's true but those lead acid cells are only practical for stationary installations. They are far too heavy to use in vehicles.
Re:Battery Pack Prices Fall As Market Ramps Up
by evandev on Friday December 06, 2019 @10:23AM
(#21722529)
Where are you finding these OPzS cells?
Re:Battery Pack Prices Fall As Market Ramps Up
by madaxe_again on Friday December 06, 2019 @11:03AM
(#21722964)
In Europe - I bought 24 BAE Secura 6 (900Ah at C100) cells from an outfit called merkasol - they’re pretty commoditised and the prices are similar from different distributors. Went for those as they were the biggest OPzS cells I could safely carry by myself, at 60kg, and 42kwh of storage is plenty.
Re:Battery Pack Prices Fall As Market Ramps Up
by jammmety on Friday December 06, 2019 @01:11AM
(#21719642)
Would you be able to share your research?
Re:Battery Pack Prices Fall As Market Ramps Up
by madaxe_again on Friday December 06, 2019 @11:05AM
(#21722989)
Sure. It’s scratty as sin as it was purely intended for my consumption - you can safely ignore the sheets other than batteries - panels are a pretty simple equation - more power is better, and usually cheaper per surface area, and the other gumph was specific to my requirements.
You’ll note the total absence of lithium cells - I took them out as they skewed the scale so badly that it was hard to differentiate between the others.
Also, all the prices are EUR, and I should have said €, not £, in my previous comment. Living between U.K./EU and being paid in USD sees me forgetting what currency I did something in quite frequently.
https://docs.google.com/spreadsheets/d/1w8vPBHkMyY5jvkxtK1Qh...
Ignoring max cycles, the cheapest lead acid I found was £87/kWh. Lifetime was poor, however.
The best bang for buck was OPzS lead acid cells - £115 per kWh, and a long, long lifetime and high cycle count. They’re the most commonly used cell in new grid-scale solar installs, and it turns out there’s a reason for that - over 15 years, they cost less than 20% of lithium over the same period.