Question 1

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

Accepted Answer

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.

Question 2

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?

Accepted Answer

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.

Question 3

Q3: Which vehicle battery can power the Charger 2?

Accepted Answer

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

Question 4

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

Accepted Answer

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.

Question 5

Q5: What is Auto-Connect and does it work with all BLUETTI models?

Accepted Answer

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.

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

A: Hub D1 cannot be connected directly to Charger 2, and the two devices cannot
communicate with each other (Hub D1 will not appear in the Charger 2 APP
interface).

If they need to be used at the same time, they can only be connected indirectly
through an Apex 300 or an additional battery pack:

● Via Apex 300: Connect Hub D1 to the Apex 300's only P090D port. In this case,
Charger 2 can charge the Apex 300 only through the CHG port and cannot connect
via the BAT port.

● Via an additional battery pack: Connect Charger 2 to a battery pack (such as
B300K/B500K), then connect Hub D1 to the second P090D port on the battery pack.
Hub D1 will then be powered and operated by that battery pack

Question 8

Q8: What vehicles work with Charger 2?

Accepted Answer

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

Question 9

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

Accepted Answer

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.

Question 10

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

Accepted Answer

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.

Question 11

Q11: Why is there no power input when using a non-BLUETTI power station, even with solar connected?

Accepted Answer

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

Question 12

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

Accepted Answer

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.

Question 13

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

Accepted Answer

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.

Question 14

Q14: When should I use Reverse Charging?

Accepted Answer

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.

Question 15

Q15: When should I use Pulse Maintenance Mode, and for how long?

Accepted Answer

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.

Question 16

Q16: Why doesn't the emergency jumpstart work?

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Question 20

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

Accepted Answer

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.

Question 21

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

Accepted Answer

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

Question 22

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

Accepted Answer

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.

Question 23

Q23: What tools do I need to install Charger 2?

Accepted Answer

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.

Question 24

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

Accepted Answer

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.

Question 25

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

Accepted Answer

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

Question 26

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

Accepted Answer

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.

Question 27

Q27: Can I save a specific charging setting for one power station?

Accepted Answer

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.

Question 28

Q28: Why isn't my BLUETTI power station charging at 1,200 W?

Accepted Answer

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.

Question 29

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

Accepted Answer

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.

Question 30

Q30: How much power does Charger 2 actually draw?

Accepted Answer

A: Charger 2 draws up to 66.6 A from a 12 V vehicle and 33.3 A from a 24 V
vehicle.

Question 31

Q31: Why is Charger 2's 1,200 W output 13 times faster than normal car charging?

Accepted Answer

A: A typical cigarette lighter provides about 80–100 W. Charger 2 delivers a
stable 1,200 W, making it roughly 13× faster.

Question 32

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

Accepted Answer

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

Question 33

Q33: How should I maintain Charger 2?

Accepted Answer

A:

* Regularly check and tighten the screws.
 * Keep it clean and dry.
 * Ensure good ventilation for cooling.

Question 34

Q34: Can I replace the circuit breaker on Charger 2 with a fuse?

Accepted Answer

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.

Question 35

Q35: What happens if the input power exceeds 1,200 W?

Accepted Answer

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.

Question 36

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

Accepted Answer

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.

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

Why Choose Charger 2

World's 1st Alternator Charger as a Smart Energy Hub

1,200 W Alternator + Solar Charging

Fits BLUETTI & Beyond

12 V/24 V DC Output via DC Hub

Protected by Design

In Full Control

Easy Steps to Install

Worth the Upgrade?

Tech Specs

IN THE BOX

Recommended Accessories

Operation Guide