BLUETTI SolarX 4K | World's First 4kW Solar Charge Controller

The BLUETTI SolarX 4K is billed as the world's first 4kW solar charge controller — a high-voltage PV regulator that lets you run a serious rooftop or ground-mount solar array straight into your BLUETTI power station without a separate inverter-side interconnect. It's expandable up to 30kW of total solar input when paired with the AT1 accessory, giving BLUETTI systems real whole-home solar charging capability.

Key Specs:

• Max Input Power: 4,200W
• PV Operating Voltage Range: 120V-450V (startup at 150V, max input 500V)
• Rated Input Current: 13A | Max Input Current: 17A
• MPPT Efficiency: up to 99%
• Max Output: 4,000W at 58V
• Connectivity: CAN 2.0, Bluetooth, Wi-Fi with BLUETTI app monitoring
• Compatible With: Apex 300, AC300/AC500 (with expansion battery), B300K, B300, B300S, B4810, B1210, B1232
• Weight: 16.8 lbs | Dimensions: 11.35" x 18.66" x 3.55"
• Warranty: 2 years

Expandable to 30kW with the AT1 accessory, the SolarX 4K is built for homeowners who want to pair a real rooftop-scale solar array with a BLUETTI battery system rather than a handful of portable panels.