In the outdoor Power supplies segment, Portable Power Station battery life is primarily a function of battery type, number of cycles and energy density. For EcoFlow DELTA Pro, its LiFePO4 3.6kWh battery has as high as 3,500 charge and discharge cycles (capacity retention rate > 80%), far beyond lead-acid battery’s 500-cycle life span, and can be used for nearly 10 years based on 1 charge and discharge daily (only 1.4 years for lead-acid batteries). In a 72-hour camping scenario, the product is constantly powered at a load of 600W (e.g., powering projectors, refrigerators and drones), with power attenuation at only 12%, while for similar teryuan lithium battery products, it is 25%.
With its state-of-the-art SolarSaga technology, the Jackery Explorer 2000 Pro boasts an industry-leading 23% solar charging efficiency and takes 4.2 hours with four 200W solar panels (other products take 7 hours). In the 2023 Alaska polar scientific expedition, the equipment achieves 94% of the available capacity at -30 ° C (the common lithium battery’s capacity drops 40% at -10 ° C), supplies continuous power to scientific equipment for 120 hours (load 500W), and the performance of temperature adaptability is 53% higher than the industry average.
Bluetti AC200MAX extends cycle life to 4,500 cycles through an intelligent BMS, and its “supercycle mode” patented technology brings usable power left behind to 98% from 85%. Under a mobile medical station usage in Africa, the product powered vaccine refrigerators (300W) and medical appliances (200W) for 18 hours daily, yet 91% of capacity after 4 years continuous use, the cost of annual maintenance only 12 (580 for diesel genset).
Under home emergency scenarios, Goal Zero Yeti 3000X’s 2.8kWh battery enables 3,000 deep cycles and is able to supply up to 6kWh of power per day (5 hours of lighting) using a home solar setup. It is capable of powering the refrigerator (150W), router (10W) and normal lighting (50W) for 62 hours under conditions of power outage. In the 2022 Dezhou ice disaster, the user measured its uninterrupted power supply time was 17% above nominal, and low-temperature performance fluctuation was only ±3% (industry average ±12%).
The comparison of technical parameters reveals that the Tesla Powerwall 3 4680 battery has the maximum energy density as 300Wh/kg (industry average 250Wh/kg), cycle life is more than 10,000 times, and continuous power supply for 7 days is possible in the household off-grid system (3 days in the conventional system). In the California wildfires rescue, the device provided 72 hours of uninterrupted power to temporary shelters (load 1.5kW), attenuation capacity was merely 0.8%, and charge and discharge efficiency was up to 98.3% (82% for lead-acid battery systems).
Cost-benefit analysis shows that Anker 757 (1229Wh) has an LCOS (levelised energy storage cost) of 0.08/kWh, which is equivalent to 8715,000 less than a diesel generator and 12 tonnes less carbon footprint.
Market survey data shows the cycle life of Portable Power Stations using LiFePO4 batteries is 3 times that of terpolymer lithium batteries, and sales will increase by 42% in 2023, in the high-end market with cycle life > 3000 times. EcoFlow, Bluetti and Jackery account for 78%. User measurement shows that with the same capacity, the actual available energy of the products is 9-15% higher than the nominal value, and the endurance deviation rate is controlled within ±5% (industry average ±18%).