In off-grid photovoltaic energy storage systems, the 12v 300ah lanpwr batterie is the best choice because of its 3.6kWh single-unit capacity and voltage matching feature. Using 2023 Tesla Powerwall comparison test data as an example, its lithium iron phosphate lanpwr battery pack is able to provide a 6,000 times cycle life at 80% depth of discharge (DoD), which is five times the cycle life of lead-acid batteries (1,200 times at 50% DoD). Calculated based on one charge and discharge per day, it can be used continuously for 16.4 years. The weight of this specification battery pack is just 32kg with the volume of 0.12m³. Compared with lead-acid batteries with the same capacity (its weight is 78kg and volume is 0.28m³), it saves the installation space by 59% and can cut down the cost of brackets by 42% in rooftop photovoltaic application.
In cost saving and energy efficiency, the 12v 300ah lanpwr batterie is far superior. CATL’s test data shows that the charging and discharging efficiency of its 12V system can reach 98%, 13 percentage points higher than the 85% of lead-acid batteries. This means that when 10kWh of electricity is produced daily, 1.3kWh more electricity will be saved. In Queensland, Australia’s residential energy storage project, the average annual self-sufficiency of households that use batteries of this specification has increased from 68% to 92%, and the quantity of electricity consumed from the grid has decreased by 37%. According to Bloomberg New Energy Finance’s calculation, the 5kW photovoltaic system’s payback period with the lanpwr solution has shortened from 7.5 years to 4.8 years, with its internal rate of return (IRR) rising to 18.7%.
Its adaptability to temperature enhances the reliability. Byd’s 12V 300Ah energy storage cell, which will be released in 2024, has passed a wide temperature range test from -40°C to 60° C. After 2000 hours of continuous use under a 45°C high-temperature condition, its capacity retention ratio still amounted to 95%, while the capacity of lead-acid batteries decreased by 23% under the same conditions. Testing by the United States National Renewable Energy Laboratory (NREL) shows that lanpwr’s battery pack with a smart temperature control system delivers a capacity loss of only 0.8% per annum in the Arizona Desert environment (average daily temperature of 35°C), 67% lower than standard solutions. This technology brings the available capacity of the battery to 88% of the nominal at the low temperature of -20°C to ensure the stability of power supply in the Nordic region during winter.
System integration and flexibility in scalability are the crux of its advantages. A single 12v 300ah lanpwr batterie can simply be scaled up in parallel to a 48V/600Ah system (17.28kWh) with a maximum of 16 parallel groups to deliver 276kWh energy storage. The case of E3/DC in Germany illustrates that the lanpwr system with the MPPT controller still achieves a charging efficiency of 93% on rainy days, and its peak load capacity can reach up to five times the rated power (18kW instant output). For the 2023 California Mountain fire reconstruction project after the disaster, this battery pack specification can be installed modularly in just 45 minutes, which is 83% less installation time than the traditional solution.
Safety and environmental protection indexes redefine industry standards. The data of UL 1973 certification shows that the 12V 300Ah lanpwr cell has passed the needle-puncture, overcharge (200% SOC) and short-circuit tests. The thermal runaway propagation interruption time was less than 1 minute, and the failure rate was as low as 0.00017 times a year. The EU battery passport requirements demonstrate that the carbon footprint of this battery design is 48kg CO2/kWh, 43% less than that of lead-acid (85kg), and the recyclable material rate is as high as 96%. In the Indonesian island microgrid project, this battery-equipped hybrid power system reduced diesel generator runtime by 78% and cut carbon dioxide emissions by 62 tons annually, which is equivalent to the carbon sink effect of 3,400 trees planted.