LG 16H Prime Battery | 16kWh | 400V | High Voltage

advanced lithium ion NMC technology with intelligent battery management for residential and light commercial installations. Engineered with dual battery modules and a dedicated control unit, this solar battery enables professional installers to optimize placement in tight spaces.  Unlike single-enclosure competitors, this split design distributes 351 pounds across three manageable components for easier handling during installation. Each 16kWh module delivers 7kW continuous power with 11kW peak surge capability, maintaining critical loads during grid outages. Installation flexibility extends to climate extremes. Natural convection cooling eliminates mechanical fans, removing a common failure point while enabling silent operation in living spaces. Operating within a 350-450V DC range, the RESU16H Prime solar battery integrates with high-voltage string inverters. The onboard DC-DC converter achieves over 90% round-trip efficiency, minimizing conversion losses during charge-discharge cycles. LG's 10-year warranty covers both manufacturing defects and capacity degradation, guaranteeing 70% retention after 54MWh of energy throughput—equivalent to 3,375 full discharge cycles. The parallel expansion option future-proofs installations, allowing homeowners to double capacity to 32kWh without replacing existing equipment or rewiring inverter connections. Specifications Type Lithium Ion Nominal Capacity 64.1Ah Energy 16kWh Cycle Life 8,000 cycles @77°F (25°C) 0.5C/0.5C Operating Voltage 350 - 450V (DC) Communication Interfaces CAN/RS485/RS232 Scalable Up to 2 units in parallel Max. Charge/Discharge Current 20A@350V Max Charge/Discharge Power 7 kW Peak Current (Only Discharging) 32.8A for 10 Sec. Environment Indoor, Outdoor Charging Temperature 14°F to 122°F  Discharging Temperature -4°F to 122°F  Storage Temperature -4°F to 113°F  (for six months) Altitude Maximum 6,562 ft Cooling Method Natural Convection IP Rating IP55 Dimensions 42.8 x 19.8 x 11.6 inches Weight 351lbs  Installation Wall mount or Floor mount Download full specifications here. Download the manual here. Download the list of compatible inverters here. Download the warranty here.