BLUETTI Charger 2 | 1200W Alternator & Solar Dual DC Charger

FAQS

• Q1: Which power stations work with Charger 2? Can it charge third-party power stations?
  A:

  Charger 2 works with all BLUETTI power stations and most third-party stations that use MC4 connectors for solar charging. However, some third-party stations may have unstable charging rates.

• Q2: Charger 2 can draw up to 800 W from the alternator and up to 600 W from solar. What's the charging strategy for consistent 1.200W power?
  A:

  The total charging power is limited to 1.200 W. Solar input always takes priority, and the rest is supplied by the vehicle starter battery and, if necessary, the BLUETTI auxiliary parking battery.

  • Here's how it works:
  • If solar provides 600 W, the starter battery supplies 600W.
  • If solar provides 400 W, the starter battery supplies 800 W.
  • If solar provides 200 W, the starter battery supplies 800 W, and the remaining 200 W comes from the auxiliary parking battery to complete the 1.200 W charge.
• Q3: Which vehicle battery can power the Charger 2?
  A:

  Charger 2 works with standard 12 V or 24 V vehicle batteries, or two 12 V batteries connected in series.

• Q4: Do I need to adjust Charger 2 for different power stations?
  A:

  Yes, after you activate Charger 2, adjust the charging voltage using the BLUETTI app to match your power station's specs.

  • For smaller power stations (like the AC2A, EB3A, EB55, EB70S, AC60, and AC50B), use the default setting (28 V).
  • For larger stations (such as the AC70, AC180, AC180T, Elite 100 V2, Elite 200 V2, Elite 300，Elite 400, AC200MAX, AC200L, AC240, Apex 300, AC300, and AC500), set it to a higher voltage.
• Q5: What is Auto-Connect and does it work with all BLUETTI models?
  A:

  Auto-Connect automatically adjusts the output voltage of Charger 2 to match your power station. It works with most BLUETTI models, except the AC200MAX, which requires manual voltage setting.

• Q6: Why can't I use an expansion cable between the power station (CHG) and the expansion battery (BAT)?
  A:

  This will create a power loop between the power station and expansion battery, which can lead to errors in the system.

• Q7: Can I use my Hub D1 (P090D) with Charger 2?
  A:

  Yes, you can, but it lacks the interactive features of Charger 2 and will only work as a basic DC power distributor.

• Q8: What vehicles work with Charger 2?
  A:

  Charger 2 works with any vehicle that has a 12 V or 24 V starter battery, including RVs, vans, and trucks.

• Q9: Why do I need Charger 2? How is it different from the cigarette lighter port?
  A:

  Because it charges much faster than a standard car port, which only provides 80–90 W at 12 V, or about 200 W at 24 V. The Charger 2 can pull up to 1,200 W from the alternator and solar, even exceeding the Charger 1's 560 W.

• Q10: What is the operating battery voltage for Charger 2?
  A:

  For 12 V vehicles

  • Power on at 12,5 V, start charging at 12,6 V, stop charging below 12,0 V.
  • For 24 V vehicles
  • Power on at 25,0 V, start charging at 25,2 V, stop charging above 26,0 V.
• Q11: Why is there no power input when using a non-BLUETTI power station, even with solar connected?
  A:

  Some third-party power stations may experience power fluctuations or charging issues. Adding a BLUETTI auxiliary parking battery can help resolve this.

• Q12: Is the D+ signal cable included? And how should it be connected?
  A:

  The D+ signal cable is sold separately. It has a 2-pin, 5,08 mm pitch, 24 AWG connector. Refer to the Charger 2 support video for wiring details.

• Q13: Why does my power station flash an error when I first connect it using Smart Detection? Is this normal?
  A:

  Yes. When you connect the power station, Charger 2 briefly sends power for verification. It may cause a brief flash, but within seconds it will recognize the unit and everything will work fine.

• Q14: When should I use Reverse Charging?
  A:

  Reverse Charging has three modes for different situations:

  • Emergency Jumpstart: Quickly recharges a drained or low car starter battery, allowing you to start the engine.
  • Trickle Charge: Provides a steady, low-current charge to keep your battery topped up over time.
  • Pulse Maintenance: Uses controlled pulses to reduce battery sulfation, improving recovery and extending battery life.
• Q15: When should I use Pulse Maintenance Mode, and for how long?
  A:

  Use Pulse Maintenance Mode if the vehicle starter battery has been unused for a while or has gone through deep discharge. Each session should last about 30 minutes.

• Q16: Why doesn't the emergency jumpstart work?
  A:

  The emergency jumpstart only works if your starter battery voltage is below 12,6 V. If the battery is higher than that, the jumpstart won't activate.

• Q17: How do I keep the DC Hub working when the engine is off?
  A:

  Connect a battery pack to the BAT port, and it'll power the DC Hub even when the engine is off. The solar is not always stable.

• Q18: Will Charger 2 harm my car battery or affect its lifespan?
  A:

  No, Charger 2 adjusts its output to protect your car's battery. If the voltage is too low, it reduces power; if it's too high, it increases power. It stops charging if the voltage drops too low (12 V/26 V). With proper care, it won't harm your car battery.

• Q19: Can I use Charger 2 on a hybrid or electric vehicle (EV)?
  A:

  Charger 2 works with hybrids that have a starter battery and alternator. It does not support EVs due to their different battery and charging systems.

• Q20: Will Charger 2 drain my car battery? Do I need to turn it off manually?
  A:

  No, Charger 2 automatically stops drawing power from your car's battery 3-6 seconds after the engine shuts off, preventing any battery drain. While the engine is running, it stays active and can be controlled through the BLUETTI app, letting you start and stop charging as needed. Plus, the new D+ signal ensures smooth operation with smart alternators.

• Q21: Does using Charger 2 affect my car's fuel consumption?
  A:

  Charger 2 uses excess power from the alternator, so it has a very minimal impact on your car's fuel consumption.

• Q22: What safety tips should I follow for self-installation?
  A:

  Make sure your car is off before starting.

  • Only handle one terminal (positive or negative) at a time to avoid shock.
  • Wear goggles and gloves for protection.
  • For best results, we recommend having a professional install it.
• Q23: What tools do I need to install Charger 2?
  A:

  You'll need a wrench for tightening cable terminals, a screwdriver to secure them, and possibly a drill and a board if you want to mount it in your trunk. Just make sure there's enough space for ventilation.

• Q24: Is it necessary to install Charger 2 exactly as instructed?
  A:

  No, you can install Charger 2 wherever it's most convenient for you, as long as there's enough space for proper ventilation for the fan.

• Q25: Can I install Charger 2 if I don't know much about cars?
  A:

  Yes. We provide a step-by-step installation video that makes the process easy, even for beginners.

• Q26: Why isn't Charger 2 charging my power station while driving?
  A:

  If Charger 2 isn't charging, try these steps:

  • 1. Turn off your engine and check all cable connections. Make sure the positive and negative cables are securely attached.
  • 2. Restart your engine and check the indicator light on Charger 2. The user manual will help you understand what the light means and whether Charger 2 is working properly.
  • 3. Let your engine run for a few minutes to fully charge the car battery. Charger 2 won't work if the car battery is too low. If the issue persists, contact our support team for help.
• Q27: Can I save a specific charging setting for one power station?
  A:

  Yes, you can save a custom charging setting as the default for one power station. If you switch to a different power station, you'll need to adjust the charging voltage accordingly.

• Q28: Why isn't my BLUETTI power station charging at 1.200 W?
  A:

  First, make sure your power station can handle 1.200 W DC input. Next, check Charger 2's output voltage. The default setting is 27 V, but to achieve 1.200 W charging, you'll need to set it to 56 V.

• Q29: Will Charger 2 work if my car gets really hot in the sun?
  A:

  Yes, Charger 2 works in temperatures from -20°C to 60°C (-4°F to 140°F). If it gets too hot, the built-in fan will turn on to cool it down.

• Q30: How much power does Charger 2 actually draw?
  A:

  Charger 2 draws up to 66,6 A from a 12 V vehicle and 33,3 A from a 24 V vehicle.

• Q31: Why is Charger 2's 1.200 W output 13 times faster than normal car charging?
  A:

  A typical cigarette lighter provides about 80–100 W. Charger 2 delivers a stable 1.200 W, making it roughly 13× faster.

• Q32: Will installing Charger 2 affect my vehicle's warranty?
  A:

  Check with your vehicle manufacturer before installation to make sure it won't void your warranty.

• Q33: How should I maintain Charger 2?
  A:

  Regularly check and tighten the screws.

  • Keep it clean and dry.
  • Ensure good ventilation for cooling.
• Q34: Can I replace the circuit breaker on Charger 2 with a fuse?
  A:

  Yes. A fuse provides immediate disconnection in case of a short circuit on the vehicle battery side, protecting both the vehicle battery and Charger 2. You may also add an external breaker for extra protection.

• Q35: What happens if the input power exceeds 1.200 W?
  A:

  Solar power takes priority, up to 600W. The starter battery charging power will automatically reduce. Once the power station reaches its charging limit, any excess power will go to the auxiliary parking batteries.

• Q36: Why does the system shut down when I connect AC200L and B300K?
  A:

  When connecting AC200L and B300K, don't use expansion cables. This will create a power loop between the power station and expansion battery, which can lead to errors in the system.