Battery storageProject Testing the Performance of Lithium Ion Batteries
This report describes testing results and general observations or issues encountered thus far with the Phase 1, Phase 2, and Phase 3 batteries.
ITP Renewables (ITP) is testing the performance of residential and commercial-scale battery packs in a purpose-built, climate-controlled enclosure at the Canberra Institute of Technology. Eight batteries were installed initially, followed by a further ten installed in a second phase. Another eight battery packs, including a lithium-titanate battery and a sodium-nickel battery, were installed in late 2019. This is the ninth public six-monthly report.
While many battery packs have experienced faults and/or failed prematurely, the Sony battery pack from Phase 1 has proven highly reliable to date, alongside the Pylontech and GNB Lithium battery packs from Phase 2. Phase 3 batteries have not yet completed enough cycles to draw conclusions on reliability.
The Sony battery pack (Phase 1) has retained over 80% of its initial capacity after more than 2,500 cycles. The Pylontech battery pack (Phase 2) has also retained over 80% of its initial capacity after nearly 2,000 cycles. Following replacements, the Redflow ZCell (Phase 2) is also demonstrating excellent capacity retention, albeit after a lower number of cycles (~860).