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

BLUETTI SolarX 4K World’s First 4kW Solar Charge Controller

The solar breakthrough that changes home BLUETTI setups in NZ

The SolarX 4K isn’t an incremental upgrade. It’s the world’s first 4kW solar charge controller a specification that didn’t exist in the residential solar market before now. For NZ homeowners running BLUETTI-based hybrid solar setups, this changes the fundamental economics: your BLUETTI ecosystem can finally absorb the full output of a serious rooftop array without bottlenecking on charge controller capacity.

Whether you’re powering a family home, a rural crib, or an off-grid coastal property, the SolarX 4K accepts anywhere from 150V to 500V of raw panel voltage and intelligently converts it into safe sub-60V charging for your BLUETTI power stations. Up to 4,000 watts of continuous solar input flowing directly into your storage the kind of throughput that turns “a bit of solar backup” into “genuine daily solar-first electricity.”

Start at 4kW. Scale to 12kW. Grow with your ambitions.

Your solar needs today aren’t your solar needs in three years. Cybotix Energy NZ buyers routinely start with a 5-6 kW array and expand over time as budget allows or as EV charging joins the mix. The SolarX 4K is designed for exactly that growth path.

Run a single unit to cover the daily essentials a 4kW system already handles roughly 4-7 MWh of annual solar generation in typical NZ conditions, enough for most single-household setups. Or chain up to three units together for 12kW total capacity the kind of muscle that runs a whole-home hybrid system, powers an EV charger during the day, and still exports meaningful surplus back to the grid.

This scalability means you buy what you need now and add capacity when your ambitions expand. No stranded investment, no forced early-upgrade cycle.

Smart AC coupling your DC ports stay free

Here’s where the SolarX 4K genuinely differentiates from conventional charge controllers: it uses smart AC coupling to connect into your BLUETTI ecosystem, rather than occupying the BLUETTI’s built-in DC solar input ports.

Translation: your BLUETTI power station’s existing DC solar inputs remain fully available for additional solar sources portable panels, secondary array segments, or auxiliary solar setups. The SolarX 4K adds to your total solar capacity rather than replacing existing capacity. For serious solar builders in NZ (off-grid property owners, rural farms, small businesses with rooftop plus mobile solar), this “additive not substitutive” architecture is genuinely valuable.

The BLUETTI ecosystem compatibility list

The SolarX 4K is designed to work across BLUETTI’s larger power station and expansion battery lineup:

• ✅ BLUETTI Apex 300 — flagship expandable platform (native P090D compatibility)
• ✅ BLUETTI AC300 — established modular home backup platform
• ✅ BLUETTI AC500 — larger home backup platform
• ✅ BLUETTI B300K — expansion battery
• ✅ BLUETTI B300 — expansion battery
• ✅ BLUETTI B300S — expansion battery (specific to AC500 platform)

Charging a single power station, juicing up multiple units simultaneously, or mixing power stations with expansion batteries the SolarX 4K adapts to whatever BLUETTI combination you’ve built. Verify the exact compatibility and any required adapter cables for your specific BLUETTI setup with your Cybotix Energy NZ consultant before ordering the interconnection between the SolarX 4K’s P090D output and each specific BLUETTI unit’s input varies by model.

Class-leading MPPT efficiency across NZ’s variable conditions

Up to 99% MPPT (Maximum Power Point Tracking) efficiency near-zero waste between what your panels generate and what your batteries actually receive. In practical terms, this means the SolarX 4K captures roughly 5-10% more energy than mid-tier alternatives in typical operating conditions.

The wide 120-450V MPPT window matters even more in NZ’s variable weather. Winter storms bring rapidly-changing cloud conditions, altered panel output voltages, and constant hunting between operating points. A wide MPPT window keeps the controller extracting maximum power across those changing conditions rather than falling out of its optimal operating range when weather shifts. NZ homeowners in Wellington, Christchurch, and Auckland (where daily weather variation is significant) benefit noticeably from this.

Total control from the next room or the next timezone

Triple connectivity — CAN 2.0, Bluetooth, and Wi-Fi — gives you multiple ways to integrate the SolarX 4K into your monitoring and control setup:

• CAN 2.0 for hard-wired integration with other BLUETTI ecosystem devices
• Bluetooth for direct on-site configuration and troubleshooting
• Wi-Fi + BLUETTI app for remote monitoring from anywhere in the world

The BLUETTI app delivers real-time performance monitoring, over-the-air firmware updates, and remote troubleshooting the kind of visibility that turns a “set-and-forget” solar setup into an actively-optimised system. Away from your NZ property for a month? Check your solar generation from your phone in Auckland, Australia, or Bali.

Quiet operation designed for real living spaces

52 dB air cooling measurably quieter than a typical dishwasher (~60 dB) or a portable air conditioner (~55 dB). The SolarX 4K can be installed in living spaces, home offices, or accessible utility rooms without creating background noise that becomes intolerable over time.

For NZ homeowners installing solar controllers in garages, utility rooms, or under-house spaces adjacent to living areas, this quiet operation matters. Loud controllers get resented; quiet controllers get forgotten in the best possible way.

Physical specifications

IP21 rated designed for indoor installation in dry, protected spaces. Not weather-proof for outdoor mounting. Install in a garage, utility room, or dedicated electrical enclosure. If outdoor installation is required for your setup, house the unit in a weather-rated enclosure rated for the environmental conditions of your specific NZ location.

7.6 kg total weight light enough for one-person mounting on wall brackets or shelves. No specialised lifting equipment required for installation.

Full specifications table

What’s in the box

• 1 × BLUETTI SolarX 4K unit
• 1 × P090D output cable
• 1 × Hex socket wrench
• Fixing screws
• Grounding screw (M5)
• Wall anchor
• Knockout connector
• OT terminal
• Product documentation

Not included (typically sold separately or supplied by installer):

• Solar panels and array wiring
• DC isolator switches and safety disconnects
• Additional mounting hardware for specific installation contexts
• Compatible BLUETTI power station or expansion battery (base unit)
• Weather-rated enclosure if outdoor installation is required

Installation professional electrical work required

The SolarX 4K handles serious voltages (up to 500V DC input) and serious current levels. This is not a DIY installation product for most owners. Professional installation by a licensed NZ electrician is strongly recommended for:

• Safe DC array wiring from panels through isolators to the controller
• Proper grounding and lightning protection
• Correct integration with your specific BLUETTI power station setup
• Compliance with New Zealand electrical standards (AS/NZS 3000, AS/NZS 5033)
• Insurance and warranty validity

Cybotix Energy NZ works with qualified installer partners across major NZ regions. Contact us for installation coordination alongside your SolarX 4K order.

Warranty and support

2-year warranty per BLUETTI’s standard commercial product terms. Confirm current warranty conditions with your Cybotix Energy NZ representative at checkout.