TOPDON Tornado 4000 | Smart Battery Charger | 6V/12V | 4A | IP65 | Power Supply Mode 13.5V

A versatile all-in-one charger, the Tornado 4000 not only replenishes 6 V or 12 V batteries, but also acts as a maintainer, desulfator, and 13.5 V power supply up to 4 A. Engineered for cars, boats, motorcycles, lawn equipment, and backup systems, it combines advanced charging modes with rugged waterproof construction and cold-weather resilience.

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Watch official video and in-depth review

Key Features

• Smart 9‑step charging: auto-detects battery health and adapts charge stages for optimal performance

• Multi-mode output: 12V Normal, Lithium, Repair, Supply and 6V Normal at up to 4 A

• Supply mode: constant 13.5 V DC output powers onboard devices drawing up to 4 A

• Battery recovery: includes desulfation and acid-layer repair functions

• Supports up to 150 Ah batteries: works with Wet, Gel, AGM, EFB, MF, CAL and 12 V Lithium batteries

• IP65-rated weatherproof enclosure: UV-resistant and operable in cold environments (down to –4 °F / –20 °C)

• Safe 24/7 connection: reverse polarity, spark elimination, short-circuit, over-voltage, over-temp safeguards

• Intuitive LED interface: error alerts and memory functions for one-tap charging

• Compact and portable: lightweight (≈ 813 g), ideal for mobile use

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Technical Specifications

• Input voltage: 100–240 VAC (50–60 Hz)

• Max output power: 65 W

• Output currents: 4 A (12 V/6 V normal), 1 A maintenance, supply mode 13.5 V/4 A

• Battery capacity: up to 150 Ah

• Back current drain: < 5 mA

• Operating temp: –20 °C to 40 °C

• Storage temp: –20 °C to 75 °C

• Charger type: 9‑step smart algorithm

• Dimensions: 205×74×46 mm

• Weight: 0.81 kg

• Safety: IP65 rated, flame-resistant ABS housing

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Compatibility

• Uses 6 V or 12 V vehicle, marine, or deep-cycle batteries

• Supports all lead-acid types plus 12 V lithium batteries

• Ideal for routine charging, seasonal maintenance, and diagnostic power supply

• Not reliant on smartphone apps — built for standalone operation

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Functions & Features

• Automatic battery diagnosis and charge optimization

• Desulfation and acid-layer restoration support

• Battery power supply (13.5 V mode) for accessories and electronics

• LED-based status indicators and error alerts

• Memory recall of previous mode on reconnect

• Safe for continuous connection to battery

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Real‑World Use Cases

• Seasonal battery maintenance in automotive, boating, or RV

• Desulfation of under-maintained or old batteries

• Powering 12 V accessories during service (e.g. fans, inflators, ECU tools)

• Portable charging station for workshops or remote sites

• Battery care and charging consistency across vehicle fleets

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Installation & Use

• Plug charger into standard AC outlet (100–240 VAC)

• Attach clamps to battery terminals; reverse polarity protection prevents misuse

• Select desired charging or power mode

• Monitor LED status; charger will maintain battery automatically after full charge

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What’s in the Box

• 1 × TOPDON Tornado 4000 Smart Battery Charger

• 1 × Heavy-duty battery clamps

• 1 × Carry bag

• 1 × User Manual