Bluetti D40 DC-DC Battery Charger
SKU: 17169324879

Bluetti D40 DC-DC Battery Charger

Sale price$179.10 Regular price$199.00
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Description

Bluetti D40 DC-DC Battery ChargerCompatible Models with the Bluetti D40 DC DC Battery Charger: BLUETTI AC200L 12V 30A, 400W Max. DC Output Compatible with LiFePO, AGM Gel, Lead acid, and Calcium Batteries Charge RV House Battery via AC200L Solar Panels Starter Batteries House Starter Battery Protection Charge up 12V RV Appliances Bluetti D40 DC DC Battery Charger: Plug and Play DC DC Battery Charger for AC200L Elevate your power experience with the D40, a compact and robust DC DC

  • Compatible Models with the Bluetti D40 DC-DC Battery Charger: BLUETTI AC200L
  • 12V / 30A, 400W Max. DC Output
  • Compatible with LiFePO₄, AGM / Gel, Lead-acid, and Calcium Batteries
  • Charge RV House Battery via AC200L / Solar Panels / Starter Batteries
  • House / Starter Battery Protection
  • Charge up 12V RV Appliances

Bluetti D40 DC-DC Battery Charger: Plug-and-Play DC-DC Battery Charger for AC200L

Elevate your power experience with the D40, a compact and robust DC-DC battery charger meticulously crafted to complement our formidable AC200L power station. Engineered with cutting-edge electronic protections and input-to-output isolation, the D40 guarantees utmost efficiency and safety in every charge. Simply integrate D40 into your RV or marine vessel, enhancing your power capabilities with reliable and efficient charging.

Universal Compatibility

The D40 offers unparalleled compatibility with diverse battery types, including LiFePO₄, AGM / gel, lead-acid, and calcium batteries. Furthermore, when paired with the AC200L, the D40 can fuel all your 12V loads. Whether you're navigating the open road or setting sail on an adventure, the D40 ensures a hassle-free journey with reliable power delivery.

Empowering Various Sources

Unlock the true potential of your power with versatile output options of D40. Whether drawing power from the AC200L, solar panels, or the starter battery, the D40 charges your house battery or DC devices with ease. Experience uninterrupted power supply with optimal convenience and performance.

Seamless Control, Effortless Power Management

With the D40's intuitive interface, streamlining your power management has never been simpler! It features clear indicators and user-friendly controls, allowing you to stay informed with real-time charging status, fine-tune settings, and more.

Specifications

GENERAL

  • Charging Power: 400 W
  • Weight: Approx. 2 kg / 4.4 lbs
  • Dimensions (L × W × H): 232.7 mm × 180.7 mm × 69.2 mm / 9.2 in × 7.1 in × 2.7 in
  • Working Temperature: -20°C to 45°C / -4°F to 113°F
  • Storage Temperature: -20°C to 50°C / -4°F to 122°F
  • Working Humidity: 10% to 90%
  • Noise: 43 dB Max 
  • Working Altitude: Up to 2,000 m / 6,561 ft
  • Protection Grade: IP20 

DC Output

  • Current: 30A Max. 20A Max. (AC200L and other BLUETTI portable power stations)
  • Voltage: Lead-acid 14.4V Max. LiFePO₄ 14.4V Max. AGM / gel 14.7V Max. Calcium 15.4V Max.
  • Load Mode: 12V / 20A (AC200L and other BLUETTI portable power stations) 

DC Input

  • 48V DC : 45V to 60VDC
  • PV / Starter Battery: 12V to 36VDC, 20A Max.

Still have questions? Give us a call at 877-242-2792

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17169324879

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Elizabeth Henderson
Grantham, US
★★★★★ 4
Very narrow
Size: 10 Wide, Color: Cognac
Run narrow. For very narrow feet. Wide width fits like a regular width.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
M
Verified Purchase
Mynx
Lexington, US
★★★★★ 5
Comfortable Shoes Right Out of the Box
Size: 9, Color: Black
I bought these shoes for my husband. He has a very hard time finding quality, comfortable shoes. These shoes are just as comfortable as his New Balance. He uses them as a dress shoe and wears them at least once a week. There was no break in period necessary. They were comfortable right out of the box! The only thing we didn't like was the white sole color. Once I knew he was going to keep them, I used a black sharpie marker to color the soles black. Instant amazing, comfortable dress shoes. They were well worth the cost. If you or your SO needs a comfortable pair of shoes, we highly recommend them.
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Reviewed in the United States on September 2, 2025
R
Verified Purchase
Rmanuel
Alexandria, US
★★★★★ 1
Paid for new, received used.
Size: 9.5 Wide, Color: Cognac, Size: 9.5 Wide, Color: Cognac
Arrived dirty as if someone whore it for more than a few days. Maybe I was mistaken, but I saw nothing about “previously used” on the Amazon page. Returned it. I would suggest that the company use quality control when it comes to shipping. The shoes seem find otherwise. I ordered 9.5 and it was just a bit tight. If I reorder I will go for size 10.
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Reviewed in the United States on June 11, 2026
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Verified Purchase
Fletch
Birmingham, US
★★★★★ 5
Overall Great.
Size: 10.5 Wide, Color: Black
Great product. Great value. Great style. Overall great.
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Reviewed in the United States on March 3, 2026
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Verified Purchase
B.J. G
Omaha, US
★★★★★ 3
Decent Shoes with Misleading Description (Not Leather)
Size: 12 Wide, Color: Black, Size: 12 Wide, Color: Black
I only look for leather when I’m purchasing dress shoes. Under the description “details” on this item it lists the shoe as leather upper and inner lining. A photo shows “genuine Napa leather lining”. If you keep reading (which I have now that I’ve received the shoes) it shows “faux leather” in the small print and that is not “leather”. I run a small leather business and this irks me because it’s clearly false advertising. The details also show the product is made in Brazil but when they arrived today, the shoe tag shows “Made in China” and “Man Made upper and lower”. I don’t hate the shoes. They look nice. What I know is they won’t hold up over time like leather, which is why the description should be accurate and not misleading.
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Reviewed in the United States on March 28, 2026

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