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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Wednesday, Sep 16
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Features
- 12/24V MPPT With 99% Tracking Technology: Redodo 12V/24V 40A MPPT solar charge controller features advanced tracking technology with tracking efficiency up to 99% and peak conversion efficiency up to 98%. It can track the maximum power point of the array to get the maximum power to charge the battery and load.
- Convenient Built-in Bluetooth Module: Redodo 40A MPPT controller could communicate by built-in Bluetooth module or by connect to RJ12 port (included in the package) through RS485, which allow users to remotely monitor the real-time status of solar panels, batteries and loads, and the built-in Bluetooth module makes operation even easier.
- LCD Display & LED Monitoring: Redodo MPPT controller is equipped with an LCD screen and LED indicators, and has four operating buttons. The display screen provides a clearer view of the data and the LEDs are useful for monitoring the status of each device.
- Support Multiple Types Of Battery Usage: Redodo 12V/24V 40A MPPT solar charge controller has LiFePO4 battery charging mode by default. At the same time, it can be compatible with other types of batteries by adjusting the parameters, such as: FLD, sealed, gel type lead-acid batteries.
- Environmentally And Heat Dissipating Multifunctional Shell: Redodo MPPT solar charge controller is made of aluminum alloy to ensure heat dissipation while reducing power loss, and the material is safe and environmentally friendly. The controller has built-in protection for Reverse Connection, Overpower, Overvoltage, Short-circuit, Over-temperature, which provides safety protection for the whole solar system.
Description
12V100Ah 12V100Ah Low Temp 12V100Ah Group 24 12V100Ah Mini 12V200Ah
Color: Black
Brand: Redodo
Voltage: 24 volts
Product Dimensions: 7.08"L x 9.64"W x 3.24"H
Material: Plastic
Brand Name: Redodo
UPC: 644097643773
Warranty Description: 2-Year Warranty
Manufacturer: Redodo
Number of Items: 1
Model: 24V 40A MPPT
Part Number: R24V40A-MPPT-BT-E
Voltage: 24 volts
Display Type: LCD
Color: Black
Material Type: Plastic
Item Dimensions L x W x H: 7.08"L x 9.64"W x 3.24"H
Item Weight: 2 kg
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Sep 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Well made with good instructions
Reviewed in the United States on July 15, 2026 by Jeff
I bought this to replace a Victron unit that was 20 Amp. Although I never actually hit 20 Amps, the Victron unit was getting scorching hot...too hot to even touch. So it was worrying me even though it seemed to function as advertized. This unit is much physically larger, with a much larger heat sink, and stays reasonable temperatures (slightly warm). Of course it is also rated for double the amperage. My semi-portable home system never hits over ~350 watts, and this functions perfectly. It does not have the fine degree of parameter settings that Victron has, but as a practical matter, you don't need all those, and the standard Li setting is perfect for my LiFePo4 battery bank. So I am completely happy. Used it all summer in the 100+ degree Utah heat and it is still functioning perfectly. Totally happy with this.
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Reviewed in the United States on November 1, 2025 by Rick
Blue tooth works great , easy to setup, really just plug in and play !
Reviewed in the United States on February 21, 2026 by Ace , sacramemto
I wanted to increase the capacity of my travel trailer batteries. My goal was to be able to use battery power for overnight pit stops and possibly a little boondocking. I came across Redodo Power and was impressed with their high quality and reasonable price. I purchased 2 batteries and built my system. My battery system consists of (2)100ah Redodo Power Self-Heating batteries, 600 watts of Renogy Solar Panels, a 40 amp Redodo Power MPPT Solar Controller, and a 1500 watt Fit4Less pure sine inverter. I also upgraded my travel trailer power converter to accommodate LiFePo4 batteries. I've used my system for 5 weeks over the past 5 months. Redodo Power has not disappointed me. They have plenty of power to meet my needs. The self heating works great and the BMS works flawlessly. I even discovered that they have built in Bluetooth. I downloaded and Android app and can monitor the batteries in real time. Well done Redodo Power!
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Reviewed in the United States on April 6, 2024 by Charles Sayers
Fine unit, but boy is it big. Much larger than the competing Victron with the same power rating. It is huge.
Reviewed in the United States on November 3, 2025 by Anonymous Warner
it works. not impressed. seems like the software was written to work good enough to sell. App is lacking and looks like a child just learning to code wrote it. Do better.
Reviewed in the United States on June 24, 2026 by mike
Manual is very clear. Accessories included in the kit is very helpful! Easy to set up, and work well - 2 weeks now! Bluetooth is very convenient for monitoring it's performance.
Reviewed in the United States on June 12, 2025 by Sam Fan
Ease of installation and built in Bluetooth made this purchase a no brainer. The unit appears to be well made, and the connection points are sturdy. This controller handles four 100 amp panels easily. I am more that pleased with this purchase.
Reviewed in the United States on October 26, 2025 by Paul Glassbrenner