IEETek’s Energy Storage System (ESS)/Power Station unit uses Lithium Iron Phosphate (LiFePO4) battery cell for energy storage. LiFePO4 batteries are inherently more stable than other lithium battery types. They are harder to ignite, better handle higher temperatures and don’t decompose like other lithium chemistries tend to do. LiFePO4 batteries typically offer at least 3000 full charge cycles before they begin to lose capacity and IEETek’s LiFePO4 battery cell offers at least 4000 full charge cycles.