Power Queen announces 1.8 kWh battery for solar applications

Chinese battery manufacturer Power Queen has announced a new lithium iron phosphate (LiFePO4) battery designed for high-load scenarios, including motorhomes and solar applications.

Dubbed the 12V 140Ah 190H Smart RV Lithium Battery, the unit offers a capacity of 1.8 kWh. Up to four batteries can be connected in series, and up to four systems can be connected in parallel, allowing for a maximum capacity of 28.67 kWh.

“With a high capacity of 140 Ah, the under-seat battery is suitable for vans, motorhomes and mini campers with a seat height of up to 190 mm, for high-current loads or long periods without a mains connection,” the company said. “It is Bluetooth 5.0 certified, enabling real-time monitoring of battery status via the Power Queen app — stable and easy (up to 10 meters).”

The IP65-rated battery has a reported lifespan of 4,000 to 15,000 cycles. It measures 35.8 cm x 17.7 cm x 18.9 cm and weighs 13.02 kg. Its charging temperature range is 0 C to 50 C and discharging range is -20 C to 60 C, with storage range being -10 C to 50 C.

“Automatic low-temperature shutdown protection interrupts charging when the battery temperature drops below 0 C and resumes charging when it has warmed to a safe range (5 C) to ensure safe charging in cold environments,” the company said, noting that the battery uses M8 bolts for terminal connections.

The system also includes an integrated battery management system (BMS) that protects against overcharging, over-discharging, overheating, overcurrent and short circuits.