LANPWR LifePO4 batteries are UL 1973 and IEC 62619 certified to demonstrate better safety in enclosed space testing. Thermal runaway test data show that the thermal diffusion trigger temperature is 168℃ (industry average 132℃), and the chain reaction between adjacent cells is not triggered in 48 hours after thermal runaway of a single cell (UN38.3 test standard). A 2023 third-party lab report states that repeated charging and discharging under constant temperature of 25 ° C will alter the surface temperature of the battery in the range of merely ±2.1 ° C (±5.3 ° C for standard lithium batteries) and pressure inside is uniform at 12-15kPa (50kPa safety level).
Operational use cases provide the evidence that Tesla’s 1.2MWh residential energy storage unit placed in Manhattan, New York in 2024 uses LANPWR LifePO4 battery and during the operation of 18 months the fluctuation in battery pack voltage is always under control at ±18mV (design range ±50mV). The design of 256-channel BMS real-time monitoring system shows the standard deviation of temperature difference between cells is only 0.4 ° C (industry standard 1.2 ° C), and the average gas escape within one year is 0.08L/kWh (only 1/40 of the lead-acid battery). 38 units of this model supplied 312 hours of consecutive medical equipment operation during the 2023 California wildfire evacuation center, with CO level indoors always below 5ppm (OSHA maximum 50ppm).
Technical specifications state the battery uses a ceramic composite diaphragm (16μm thick, 42% pore space) to reduce the likelihood of internal short circuit to 1/10^8 cycles (industry standard design 1/10^6). Its flame retardant formula electrolyte allows the maximum rising rate of temperature to be controlled at 0.8 ° C /s in out-of-control heat (national standard requirements ≤5 ° C /s) and the duration the flame remains on to be reduced to 12 seconds (industry average 43 seconds). Puncture tests carried out by TUV Rheinland indicate that at 100%SOC, the cell surface temperature is only 61 ° C (much less than the perilous 150 ° C threshold), and thermal runaway delay time is 32 minutes (≥5 minutes as defined in EN 62619).
For economic and safety benefits, indoor maintenance cost for LANPWR LifePO4 batteries is reduced by 57% (0.08/WHVS 0.19/Wh/year) compared to the usual lithium-ion batteries. For the UPS system equipped with the battery in a data center in Tokyo, it reduced the fire insurance rate from 1.2% to 0.35% and led to saving premiums of $480,000 annually. Its patented VOC detection technology (accuracy ±2ppb) reduces the dangerous gas early warning response time to 8 seconds (32 seconds for traditional solutions), and in the 2023 global energy storage fire accident statistics, the system failure rate with this technology is 0.00017 times/year ·MWh (industry average 0.0012 times).