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Author Topic: Battery testing project  (Read 260 times)
splyn
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« on: October 10, 2017, 10:40:14 PM »

ITP Renewables is running a 3 year battery test at the Canberra Institute of Technology of 18 batteries including Li-ion, a conventional (GNB VRLA gel) and an advanced lead battery (EcoUlt lead-carbon), a zinc-bromide flow battery and an aqueous hybrid ion battery. A Tesla Powerwall is in the line-up.

The tests are investigating capacity fade, efficiency, and charge characteristics. Real time results are available online:

http://batterytestcentre.com.au/

Biggest problem is that having only one sample of each battery, failures may be due to poor product, design or just bad luck. They have already lost one StoraXe battery pack (Kokam Li-ion cells) due to a BMS problem and a second (CALB) is also suffering. Still hopefully it should provide some good information.

It's a bit early yet but already "Capacity fade is evident for some of the battery packs under test". There are two six monthly reports so far:

http://batterytestcentre.com.au/reports/
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Scruff
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« Reply #1 on: October 11, 2017, 09:10:51 AM »

Gel is a poor representative of the lead acid league.
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linesrg
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« Reply #2 on: October 11, 2017, 11:27:46 AM »

Scruff,

I'd agree.

Regards

Richard
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16off BP380 on a Lorentz tracker/SMA SB2500, 16off Chinese 80W/SMA SB1700, 16off BP380/SMA SB2500. CTC GSi 12 heat pump/Glenhill ASL0085 300litre EHS/3off Navitron 4720AL solar ET panels, an Immersun T1060/T1070/T1090 (+ planned 7off 235W panels).
splyn
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« Reply #3 on: October 11, 2017, 08:46:13 PM »

They probably didn't include flooded lead acid because of the need for semi-skilled maintenance to avoid damage through running dry - most (probably all) the batteries tested seem to be aimed at the domestic 'fit and forget market'.

Not a big loss anyway as there have been plenty of studies of flooded battery performance - unless you were referring to some other lead acid types?
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Scruff
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« Reply #4 on: October 11, 2017, 10:22:31 PM »

Gel = non serviceable & throttled flooded. A flooded will perform as well as a gel on a gel algorithym and exceed most of it's contenders on affordable power storage if you do keep them serviced and well maintained. Or I thinks so anyways...

Nope nothing more mundane than flooded on my mind, I believe OpzS to be the best, keeping them alive to be best is a skill.
The big market is in zero maintenence, low profile alright. No point in arguing with a customer, they know best, or what suits them best.
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