Does this have Bluetooth connectivity?

nope. You'd most likely want that functionality from a separate battery monitor anyway, though. As far as I understand, most chargers will only know when to float your battery. They won't know what percentage your battery is at between dead and full, or the calculated time to full discharge based on usage, or a handful of other useful stats/info.

What is the maximum volts for the solar input?

Hi there, Thanks for your message and apologies for the late reply. The maximum open circuit voltage (VOC) that our chargers can accept is 32V. You are needing to use '12V nominal' type solar panels with our BCDC units. Best regards, REDARC

On the lifepo4 set up,the redarc chart does not specify if that set up is for 1 or 2 lifepo4 batteries, does it mean is the same size wire regardless?

Hi there, Thanks for your question. Technically the BCDC can be used on either one, two or three batteries - we normally ensure that the amount of AH the unit is trying to charge isn't too large for it (eg around 200AH maximum). So yes the wire size chart is still applicable no matter how batteries you wire on the output side of the charger, just go by the length of the cable runs instead. We hope that's helpful! Best regards, REDARC

Is this unit water tight? can it be mounted unter the travel trailer?

its water proof but you need to mount it: 1-As close as possible to the battery being charged (auxiliary battery) 2-Away from any direct engine heat. 3-For Caravan or camper, near or in the battery compartment is generally the best position. 4-Mount the BCDC to a metal surface if possible to ensure heat dissipation. So I guess the answer is no

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Dual Input 40A in-Vehicle DC to DC Battery Charger with MPPT Solar Regulator, Green Power Priority, 12V/24V Compatible, for Lithium, AGM, Gel, Lead Acid, Calcium, LiFePO4 Batteries

Product ID: 86240684

Details

Brand
REDARC
Color
Black
Input Voltage
12 Volts
Item Weight
35.3 Ounces
Output Voltage
12 Volts (DC)

⚡40A dual input power

☀️MPPT solar optimization

🛡️rugged, weatherproof design

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Description

⚡ Power your adventure with smart, unstoppable charging.

BUILT FOR THE WILD - Engineered to endure dust, water, heat (up to 176°F), and vibration — perfect for off-road pros.
BATTERY VERSATILITY - Supports Lithium, AGM, Gel, Lead Acid, Calcium & LiFePO4 with tailored multi-stage charging.
SOLAR SMART WITH MPPT - Maximizes solar harvest with cutting-edge MPPT tech and green power priority.
DUAL INPUT POWER MASTERY - Simultaneously charges from alternator and solar for unstoppable energy flow.
TRUSTED AUSSIE RELIABILITY - 45+ years of rugged innovation backed by a 2-year warranty and global support.

The REDARC Dual Input 40A DC to DC Battery Charger combines vehicle alternator and solar inputs with MPPT technology to efficiently charge a wide range of 12V/24V batteries. Designed for extreme conditions, it delivers reliable, multi-stage charging for battery banks 200AH and up, making it the go-to solution for overlanders, RVers, and off-grid professionals seeking durable, high-performance power management.

Specifications

ASIN	B077JR6NH5
Amperage	40 Amps
Best Sellers Rank	#590,020 in Automotive ( See Top 100 in Automotive ) #1,286 in Battery Chargers
Brand	REDARC
Color	Black
Current Rating	40 Amps
Customer Reviews	4.1 out of 5 stars 42 Reviews
Global Trade Identification Number	09338628004355
Input Voltage	12 Volts
Item Weight	35.3 Ounces
Manufacturer	REDARC
Mfr Part Number	BCDC1240D
Model Number	BCDC1240D
Output Voltage	12 Volts (DC)
Unit Count	1.0 Count

Reviews

K**R

Pricey, but worth it...

I've installed 20 DC-to-DC converters. This is it. At $475, or whatever, easily $150 more than similar, it is quality. And you can mount it almost anywhere saving valuable protected space. Simple to install, virtually not setup and works as advertised. Smaller than the 50A Kisae and no fan. This is the 40A version but I'm reasonably sure the 50A is equally good.

15.10.2022

D**R

REDARC BCDC1240 performs

Easy install and works great for both the solar and alternator charging. Love the product and would recommend to anyone thinking of buying.

2.02.2021

H**.

Fast shipping

Product arrived in perfect condition, Redarc BCDC40A but have not set-up charging system yet, still waiting for other needed parts from other venders. This charger has a excellent reputation so hopefully once set up it will work as it is supposed to. 5 stars for fast shipping and sales of quality products.

9.12.2020

D**K

Excellent and performs as expected.

Perfect for any application and I feel this is the best on the market.

21.10.2020

K**Y

Keeps my auxiliary battery topped off

Best investment. No more separate isolator, no separate solar controller, just 1 small simply wired charger.

22.03.2021

J**S

Best I found

Works both for solar and on board charging. Second system in my van

27.10.2019

J**N

AAA+++ customer service

Soooo glad I researched and decided to pony up the cash on this superior product.

7.03.2022

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35889832₫

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In stock

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

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