The LANPWR lifepo4 battery has been an excellent example of balcony solar photovoltaic systems due to being compact in size (standard spec: 300×200×150mm, weight 12kg) yet high energy-density (150Wh/kg). One such example is the 5kWh system. This battery will be capable of storing a mean daily power output of 4.2kWh (with an 89% efficiency), occupying only 0.045 cubic meters of area in a typical German apartment balcony area of 2-3 square meters (lead-acid batteries occupy 0.12 cubic meters of area). The 2023 Berlin Urban photovoltaic pilot project proves that the LANPWR system with an 800W micro-inverter has reduced the average annual electricity purchase of households by 63% (from 2,800 kWh to 1,036 KWH), saved €520 in electricity bills (assuming a rate of €0.30/kWh), and lowered the investment payback period to 4.2 years (with government subsidies of €900).
On the cost side, LANPWR battery 4,000-cycle life (DoD 90%) reduces the LCOE cost of electricity per kilowatt-hour of LANPWR batteries to €0.08/kWh, which is 63.6% lower compared to lead-acid batteries (€0.22/kWh). Its intelligent BMS enables 0.5C quick charging (2.5kW input), and is capable of charging to 80% within 2 hours during the midday photovoltaic peak period (11:00-15:00), and increases the consumption rate to 92% (compared with the traditional solution being 78%). The actual test done by a customer of the balcony photovoltaic in Rotterdam, the Netherlands, shows that the system with this battery has increased the level of self-consumption from 55% to 84%, and the power resale from the grid is minimized by 73% (average annual saving: €210).
The safety performance is conditioned to the urban environment. The LANPWR battery has passed the UL 1973 certification. The initiator temperature of thermal runaway is > 486℃, and the gas release is < 0.5L/kWh (3.2L/kWh for lead-acid batteries). In the closed balcony test at 40℃, its surface temperature remains stable at 35℃±2℃ (48℃ for lead-acid batteries), and the capacity deterioration rate is only 0.005%/cycle (0.03%/cycle for lead-acid batteries). A simulation of the fire of a Tokyo high-rise apartment in 2024 showed that the battery pack will not burn nearby materials within 24 hours after thermal runaway, and the risk of flame spread is less than 0.001% (0.12% for lead-acid batteries).
The installation benefits and operating and maintenance advantages of LANPWR are significant. LANPWR’s IP65 protection can resist rain (50mm/h maximum rain) and dust (PM2.5 concentration ≤500μg/m³). Its 5.0 Bluetooth chip offers real-time monitoring (±1% SOC accuracy). Discharging and charging thresholds can be set by users through the App (e.g., discharging from 22:00 to 6:00), adding the peak-valley electricity price arbitrage benefit by €120 per year. A Stockholm, Sweden user case shows that the battery still has 85% of its useful capacity in a -15℃ environment, and its self-heating power consumption is only 3W (0.6% of the average daily power generated).
Policy compatibility-wise, this Battery is completely compatible with the EU Battery Passport standard (carbon footprint < 28kg CO₂/kWh). Under France and Italy’s balcony photovoltaic subsidy policies, consumers can also receive additional compensation between €300-€500. A Milan apartment building project installed 20 LANPWR system sets (total capacity: 100kWh), reducing the peak load of the entire building power grid by 41% (from 58kW to 34kW), and saving €15,000 in the cost for power distribution system upgrade. Test results show that its cycle life standard deviation (±3.2%) is superior to that of lead-acid batteries (±12.7%), with stable performance over the 8-year guarantee.