LANPWR lifepo4 battery core employs A-class lithium iron phosphate cells of energy density of 126Wh/kg (33Wh/kg for lead-acid batteries) and cycle life of a single cell over 6,000 times (DOD 80%). Sixteen pieces of 3.2V 100Ah battery cells were connected in series by the method of laser welding to form a 12.8V 100Ah module. The internal resistance was controlled to less than 0.25mΩ (the industry standard was 0.5mΩ), and the charging and discharging efficiency was enhanced to 98% (80% for lead-acid). The UL certificate test in 2023 confirmed that the thermal rise of this battery cell only rose to 8℃ under 150% overcharge conditions, and the initiating temperature of thermal runaway was as high as 268℃, far higher than the 170℃ of NMC ternary batteries.
The battery management system (BMS) includes TI’s high-accuracy power metering chip, with ±5mV sampling error of voltage (industry standard ±20mV), 0.5C continuous discharge (50A) and 2C pulse discharge (200A/10s) support, active balance current up to 2A (passive balancing is as low as 0.1A), and it can maintain the voltage difference between battery cells as low as ±10mV and increase cycle life up to 35%. Figures from CATL’s laboratory in 2024 show that the capacity retention ratio of lifepo4 battery packs with this BMS reached 89% at a low temperature of -30℃ (only 72% without balancing system).
Structurally, the battery casing is made of 6-series aviation aluminum with a compressive strength of 200MPa (50MPa for ABS casing of lead-acid batteries) and an IP67 protection level, and can last for 30 minutes in a water depth of 1 meter. The interior is filled with heat-resistant epoxy resin (UL94 V-0 grade) which has a thermal conductivity of 1.5W/m·K, ensuring the temperature difference within the battery cells is less than 1.5℃. When, in the 2022 California wildfires, the LANPWR battery pack experienced an external fire (300℃, 15 minutes), the internal temperature was only 52℃, while the lead-acid battery pack casing melted as low as 93%.
Regarding safety certification, this battery has passed 7 international standards such as UN38.3 and IEC 62619, and the short-circuit protection response time is less than 2ms (industry standard is 10ms). In the puncture test, after the 8mm steel needle penetrated the fully charged battery cell, the surface temperature rose from 25℃ to 58℃ (486℃ for ternary batteries), and there was no leakage of electrolyte. The 2023 Tesla Energy Storage Fire Accident Analysis Report illustrates that the temperature spread rate for lifepo4 battery packs is 87% slower compared to NMC batteries and has a maximum of 64% lower flame heights.
Battery cells in the cost structure are 62% (using nano-scale LiFePO4 cathode materials with purity of 99.95%), BMS at 18% (using CAN/RS485 communication protocols), and structural materials at 15%. Look at the 100Ah model. Its production cost is 420 (150 in the case of lead-acid batteries), yet on a lifespan basis of 15 years, its cost per kilowatt-hour is a mere 0.01/kWh (0.05/kWh for lead-acid solutions). The 2024 BloombergNEF report says that photovoltaic storage systems using this battery have decreased payback periods to 4.2 years (7.8 years in the case of lead-acid solutions).
Practical use verification shows that the LANPWR battery pack has been operated continuously in a communication base station in the Sahara Desert for 18 months during 2023 with an average daily discharge depth of 70% and an attenuation of only 1.8% (the attenuation of lead-acid batteries under the same conditions over the same duration was 24%). Its working temperature range of -40℃ to 60℃ is compatible with polar scientific research usage. For example, real-time measurement at Neumayer III station in Antarctica shows 82% rated capacity still capable of output when -50℃ is reached while the lead-acid battery has ceased to function altogether. Using the smart temperature control system, the corrosion rate at an elevated 45℃temperature per annum in the battery is merely 0.02mm (0.15mm for lead-acid batteries), and the operation and maintenance cost decreases by 79%.
