BLUETTI Charger 2 Alternator & Solar Dual Charger | 1200W
Overview
The BLUETTI Charger 2 is a DC-DC charger that refills a power station from your vehicle while you drive, from solar, or from both at once. It draws up to 800W from the alternator and up to 600W from solar panels, and delivers up to 1200W into the power station through its charging output (CHG). Charging starts when the engine runs and stops when you park, so the starter battery is not drained while the vehicle sits.
It also works in the other direction. Its bidirectional power port (BAT) carries up to 1000W to or from a BLUETTI auxiliary battery, a dedicated 48V output (DC Panel) runs a BLUETTI DC Hub for 12V and 24V accessories, and reverse charging can put power back into a flat starter battery. The BLUETTI app sets the charging voltage for your power station and monitors the system over Bluetooth or Wi-Fi. Installation is a wiring job in the vehicle: if you're unsure how it fits your setup, we're happy to help before you buy.
Key Features:
- Charging Output (CHG): 12V to 56V, 24A, 1200W max
- Alternator Input (ALT): 12.8V at 62.5A or 25.6V at 31.3A, 800W max
- Solar Input (PV): 13V to 50V, 20A, 600W max
- Auxiliary Battery Port (BAT): 19.2V at 52A, 25.6V at 39A or 51.2V at 19.5A, 1000W max
- DC Hub Output (DC Panel): 40V to 58.5V, 600W max, shared across all the DC Hub's ports
- Reverse Charging: 100W
- Protections: short circuit, reverse polarity, overcurrent, over-voltage and under-voltage
- Fuse: 75A
- Protection Grade: IP20
- Weight: 1.59kg
- Dimensions (L x W x D): 265 x 169 x 69.7mm
What's in the Box?
- 1 x Charger 2
- 6 x Self-tapping Screw
- 1 x Car Battery Cables
- 1 x 75A Fuse
- 1 x MC4 Input Cable
- 1 x MC4 Output Cable
- 1 x MC4 to XT60 Cable
- 1 x Bidirectional Power Cable
- Download the BLUETTI Charger 2 user manual (PDF)
- Warranty: 2-year warranty
Note: the DC Hub that the 48V output feeds is a separate product.
Up to 1200W, From the Alternator and the Sun
The Charger 2 takes up to 800W from the vehicle's alternator and up to 600W from solar panels, combining them to deliver as much as 1200W into your power station. Solar is used first and the alternator makes up the difference, so on a sunny drive the vehicle does less of the work. BLUETTI rates that as roughly thirteen times faster than charging through a 12V car outlet.
The 13x comparison is BLUETTI's own figure, measured against a standard 12V car outlet. Real charging rates vary with the vehicle, the alternator and the sunlight available.
Charges While You Drive, Stops When You Park
Charging begins once the engine is running and stops when it is switched off, so the Charger 2 never pulls your starter battery down while the vehicle is parked. Protections cover short circuit, reverse polarity, overcurrent and both over-voltage and under-voltage, with a 75A fuse on the battery cable.
Power Back the Other Way
The bidirectional power port (BAT) moves up to 1000W to or from a BLUETTI auxiliary battery, and reverse charging can send power back into the vehicle's starter battery in three modes: a jumpstart for a battery too flat to crank the engine, a trickle charge to hold a healthy battery topped up, and a pulse maintenance mode for a battery that has been standing or deeply discharged. The 48V output (DC Panel) feeds a BLUETTI DC Hub for 12V and 24V gear, with 600W shared across all of the Hub's ports.
Set the Voltage From Your Phone
The BLUETTI app connects over Bluetooth or Wi-Fi to set the charging voltage for the power station you are using, switch reverse charging on or off, and watch input and output power while you drive. Set it once for your unit and the charger is matched to it on every drive after.
What's in the Box
Pairs Well With
Turn driving time into charging time. BLUETTI names the BLUETTI Apex 300 and the BLUETTI Elite 400 among the power stations the Charger 2 suits. The Elite 400 reaches a full charge in about 3.5 hours on the Charger 2, against roughly 7.5 hours on the Charger 1. Set the charging voltage in the app to match whichever unit you connect. If you want us to confirm the fit for your power station and vehicle before you order, just ask.
Frequently Asked Questions
How much faster is it than a car outlet?
A standard 12V car outlet supplies roughly 80 to 90W, or about 200W at 24V. The Charger 2 draws up to 800W from the alternator and up to 600W from solar, for as much as 1200W into the power station. BLUETTI puts that at around thirteen times a 12V outlet, and about double what the Charger 1 delivers.
How does it reach 1200W from an 800W alternator input?
By combining sources. Total charging power is capped at 1200W and solar always takes priority: if the panels supply 600W the starter battery supplies 600W, if solar drops to 400W the battery supplies 800W, and so on. A BLUETTI auxiliary battery on the bidirectional power port (BAT) can make up the difference as well.
What vehicles and batteries does it suit?
Any vehicle with a 12V or 24V starter battery, including RVs, vans and trucks. It also runs from two 12V batteries wired in series. On a vehicle with a smart alternator you will need the D+ signal wire, which is sold separately.
Do I need to change any settings for my power station?
Yes. After activating the Charger 2, set the charging voltage in the BLUETTI app to match your unit. Smaller power stations use the default 28V setting; larger units including the Apex 300 and the Elite 400 need the higher setting. Auto-Connect will match most BLUETTI models for you, and we can confirm the right setting for yours before you buy.
Will it drain my starter battery when I am parked?
No. Charging starts when you drive and stops when you park, with under-voltage protection on top. For 12V vehicles it powers on at 12.5V, starts charging at 12.6V and stops below 12.0V; for 24V vehicles it powers on at 25.0V and starts at 25.2V.
Can it recharge a flat car battery?
Yes, using reverse charging from solar or from a connected BLUETTI power station or battery. The emergency jumpstart mode only activates when the starter battery is below 12.6V. Trickle charge keeps a healthy battery topped up, and pulse maintenance runs for about 30 minutes at a time on a battery that has been standing or deeply discharged.
What does the 48V DC Hub output (DC Panel) do?
It feeds a BLUETTI DC Hub, which is a separate product, to run 12V and 24V gear such as a car fridge, lights or fans. The 600W is shared across all of the Hub's outputs, not available from each one, and connecting it needs an Anderson adapter cable.
Is the installation something I can do myself?
It is a wiring job in the vehicle: the supplied cables run to the battery terminals through the supplied 75A fuse, and the unit is mounted with the self-tapping screws. If you are not comfortable working on vehicle wiring, have an auto electrician fit it. Ask us if you want to talk the install through first.