Baintech BT3000W 3000W Inverter Charger with Remote Control

Serious power and charging in one unit—3000W continuous output for larger off-grid setups and full caravan systems.

Product Overview

The Baintech BT3000W is a 3000 watt inverter charger that combines high-capacity AC power conversion with intelligent battery charging in one robust unit. Unlike standalone inverters that only convert DC to AC, this unit automatically switches between inverter mode when running off batteries and charger mode when connected to mains power or generator, seamlessly managing power flow in both directions without manual intervention.

Built around pure sine wave technology, the BT3000W delivers grid-quality 240V AC power suitable for sensitive electronics including laptops, medical devices, audio equipment, and appliances with microprocessor controls. The 6000W surge capacity handles substantial motor starting loads from air compressors, large pumps, power tools, and even some smaller caravan air conditioners that require brief high-current draws on startup.

The integrated battery charger supports four-stage charging (Bulk, Absorption, Float, Recharge) across multiple battery chemistries including AGM, flooded lead-acid, gel, and lithium. The included remote controller allows convenient power management and monitoring from accessible locations without accessing the main unit. Ideal for larger caravan installations, off-grid cabins, marine systems, mobile workshops, and expedition vehicles where substantial AC power and efficient battery charging are essential.

Key Specifications

• Continuous AC output: 3000W pure sine wave
• Peak surge power: 6000W
• AC output current: 25A at 240V
• Output voltage/frequency: 240V AC, 50Hz (Australian standard)
• Waveform: Pure sine wave (<3% THD)
• Nominal DC input voltage: 12.5V DC
• Input voltage operating range: 10.5–16.5V DC
• Efficiency: >87%
• Battery charging modes: Bulk, Absorption, Float, Recharge
• Recharge voltage range: 12.8–13.6V DC
• Charging voltage range: 13.8–14.8V DC
• Battery chemistry compatibility: Gel, flooded, AGM, lithium (LiFePO4)
• No-load current (inverter mode): <3.5A DC
• Dimensions: 432.9mm × 287mm × 110mm (17.0" × 11.3" × 4.3")
• Weight: 7.4kg (16.3 lbs)
• Remote controller: Included
• Safety certifications: UL 458, CSA C22.2 No. 107.2-01

Features & Benefits

Dual Function Inverter/Charger: Eliminates the need for separate inverter and battery charger units, saving space, weight, and wiring complexity. When connected to mains power or generator, it automatically switches to charge mode and passes AC through to loads while simultaneously charging batteries. When mains power disconnects, it instantly switches to inverter mode drawing from batteries. Perfect for caravan sites with intermittent power or workshops alternating between generator and battery operation.

3000W Pure Sine Wave Output: Delivers clean, grid-quality power suitable for all equipment including sensitive electronics, audio systems, laser printers, variable speed tools, and medical devices. The pure sine wave prevents the buzzing, overheating, and premature failure that modified sine wave inverters cause in motorized loads and microprocessor-controlled equipment. Handles multiple appliances simultaneously—run the fridge, microwave, laptop, and lighting together without compromising power quality.

6000W Surge Capacity: Handles substantial high-current draws from equipment startup. Air compressors, large fridges, washing machines, air conditioners, and circular saws require 2–3× their running wattage for motor starting. The 6000W surge capability covers these startup loads without tripping protection circuits, making this unit suitable for running small caravan air conditioners with soft-start technology or handling multiple appliance startups simultaneously.

Multi-Chemistry Battery Charging: The intelligent four-stage charging system adapts to gel, flooded lead-acid, AGM, and lithium batteries. Each chemistry requires different voltage profiles and charging algorithms—the BT3000W handles this automatically, protecting battery investment and maximizing lifespan regardless of your battery choice. Critical for systems upgrading from lead-acid to lithium without replacing charging infrastructure.

Remote Controller Included: Mount the remote control panel in accessible locations—inside the cabin, at the camp kitchen, or anywhere convenient. Monitor input/output voltage, battery status, charging progress, and power mode without accessing the main unit installed in battery compartments or under-seat locations. Switch between inverter/charger modes and adjust settings from the driver's seat.

Automatic Transfer Switching: Seamlessly switches between mains/generator power and battery power with no manual intervention. When you plug into powered sites, it automatically charges batteries and passes AC through to appliances. When you unplug, it instantly switches to inverter mode. No gap in power to equipment, no manual changeover switches to operate.

Advanced Battery Management: Four-stage charging (Bulk, Absorption, Float, Recharge) optimizes battery charging regardless of chemistry. Bulk mode delivers maximum current until batteries reach approximately 80% charge, Absorption mode completes charging at controlled voltage, Float mode maintains full charge without overcharging, and Recharge mode detects when batteries need topping up. This prevents the overcharging damage common with basic chargers.

High Efficiency at 87%+: Minimizes battery drain and heat generation. At 87% efficiency, only 13% of power is lost as heat during conversion, critical for installations in enclosed spaces where heat dissipation is limited. More efficient operation means longer battery runtime and less load on cooling systems, particularly important at the higher 3000W output level.

Comprehensive Safety Protection: Over-voltage protection prevents damage from alternator voltage spikes or incorrect charging sources. Under-voltage protection prevents deep battery discharge that damages cells. Overload protection prevents damage from excessive current draw. Over-temperature protection prevents thermal damage during sustained high loads. Short-circuit protection prevents catastrophic failure from wiring faults.

Robust Construction for Demanding Use: Built to handle sustained high-power loads in harsh environments. The durable housing and advanced thermal management support continuous 3000W operation even in hot Australian conditions. Suitable for permanent installations in caravans, boats, and off-grid cabins where reliable operation is non-negotiable.

Technical Specs

AC Output Specifications:

• Continuous power: 3000W
• Peak surge power: 6000W (brief duration)
• Output current: 25A at 240V AC
• Output voltage: 240V AC ±10%
• Output frequency: 50Hz ±0.5Hz
• Waveform: Pure sine wave
• Total harmonic distortion (THD): <3%

DC Input Specifications:

• Nominal input voltage: 12.5V DC
• Operating voltage range: 10.5–16.5V DC
• No-load current draw: <3.5A DC
• Efficiency: >87% at rated load

Battery Charging Specifications:

• Charging modes: Bulk, Absorption, Float, Recharge
• Recharge voltage: 12.8–13.6V DC
• Charging voltage: 13.8–14.8V DC
• Compatible chemistries: Gel, flooded lead-acid, AGM, lithium (LiFePO4)
• Charging current: Not specified (confirm from spec sheet)

Physical Specifications:

• Dimensions: 432.9mm (L) × 287mm (W) × 110mm (H)
• Weight: 7.4kg
• Mounting: Not specified (confirm mounting orientation)
• Cooling: Forced ventilation (assumed, confirm)

Environmental Specifications:

• Operating temperature: 0°C to 40°C
• Storage temperature: -20°C to 60°C
• Relative humidity: 5–90% non-condensing
• Maximum altitude: 3000m (9843 ft)

Safety & Compliance:

• Certifications: UL 458, CSA C22.2 No. 107.2-01
• Protection features: Over-voltage, under-voltage, overload, over-temperature, short-circuit

Included Accessories:

• Remote control panel with cable
• User manual
• Mounting hardware: Not specified

Compatible With / Goes Well With

• 300–600Ah AGM or gel deep-cycle battery banks
• 250–400Ah lithium (LiFePO4) battery systems
• Mains power connections at powered caravan sites
• Portable generators (3000W+ capacity for charging)
• Heavy-gauge DC cabling (70mm²–95mm² for high current)
• Anderson plugs or hardwired DC connections rated for 300A+
• Inline fuses or circuit breakers rated for 300A+ at 12V
• Battery monitoring systems with shunt-based SOC calculation
• Pure sine wave compatible appliances and electronics
• Remote control extension cables (if needed)
• Caravan and 4WD auxiliary battery systems
• Off-grid cabin and tiny house power systems
• Marine battery systems and liveaboard boats
• Mobile workshop and tradie vehicle setups
• Caravan air conditioners with soft-start technology

Note: Ensure adequate battery capacity and DC cabling for very high-current draw. Professional installation strongly recommended for 3000W systems.

Frequently Asked Questions

What's the difference between the 2000W and 3000W models?

The 3000W model delivers 50% more continuous power (3000W vs 2000W) and double the surge capacity (6000W vs 4000W). This extra capacity allows running multiple high-draw appliances simultaneously or handling larger single loads like caravan air conditioners. The 3000W model weighs 1.5kg more and draws proportionally higher DC current. Choose based on your maximum expected load—if running air conditioning or multiple high-draw appliances, the 3000W is essential.

Can this run a caravan air conditioner?

The BT3000W has a better chance than the 2000W model due to its 6000W surge capacity. Many smaller caravan air conditioners with soft-start technology will run on this unit, but check your specific air conditioner's running wattage (should be under 2500W) and starting surge requirements (should be under 6000W). Units without soft-start or larger roof-mounted systems may still exceed the surge capacity.

What size battery bank do I need for 3000W loads?

At 3000W output from 12V, the inverter draws approximately 265A DC (accounting for efficiency losses). For one hour of runtime at full 3000W load, you'd need minimum 265Ah battery capacity, though you should only discharge batteries to 50% (lead-acid) or 80% (lithium), meaning 530Ah lead-acid or 330Ah lithium minimum. Most users size batteries for their typical load rather than maximum capacity—if you rarely draw full 3000W continuously, smaller battery banks are practical.

What cable size do I need for 3000W?

At 3000W, you're drawing approximately 265A at 12V DC. This requires substantial cabling—minimum 70mm² (1/0 AWG) for short runs under 3 metres, or 95mm² (2/0 AWG) for longer runs. You'll also need appropriate fusing (300A+) and heavy-duty terminals. This is serious current draw requiring professional installation—inadequate cabling will overheat, drop voltage, and create fire risk.

Does the remote control show charging amps?

The remote control displays input/output voltage and system status. Detailed charging current and state-of-charge information requires additional battery monitoring equipment with current shunt. Confirm exact remote display features in the Baintech user manual, as some models may show more detailed information than others.