Redodo 24V 100Ah BT: Power Up Your Endless FPV sessions

When it comes to high-performance energy storage, lithium iron phosphate (LiFePO4) batteries have become the go-to choice for solar setups, RVs, marine use, and even field charging for FPV drone pilots. The Redondo 24V 100Ah LiFePO4 battery stands out with its long lifespan, Bluetooth monitoring, and lightweight and robust design, making it a versatile solution for those needing reliable power. It can be used in up to 4P2S (stacking two 4-parallel-connected batteries in series) configurations, resulting in a total power of 20.48kWh, allowing a typical 3–4-person household to run for 1–3 days.

One of the standout advantages of lithium iron phosphate (LiFePO4) batteries, which helps prevent back pain :), is their superior energy density. A typical lead-acid battery has an energy density of around 30-50Wh/kg, whereas Redodo’s 24V 100Ah LiFePO4 pack delivers over 117Wh/kg. As a result, LiFePO4 batteries are 2-3 times lighter than their lead-acid counterparts.

LiFePO4 batteries offer several advantages over traditional lithium-ion batteries, including improved thermal stability, an extended cycle life, and enhanced safety.

Redodo 24V 100Ah LiFePO4 review

Disclosure: I received this 2.5kWh battery in a product review collaboration with Redodo. Product specs and quality may vary according to the manufacturer’s reliability, so I cannot guarantee that you will get a unit that performs the same as seen in my review.

Redodo was founded by visionary explorers with a shared passion for advancing new energy solutions. Committed to excellence, we focus on sourcing high-quality raw materials, utilizing cutting-edge power electronics technology, and implementing superior manufacturing and assembly processes to produce professional-grade LiFePO4 batteries. The company is recognized for its high-quality products, competitive pricing, and excellent customer support, providing 5-year warranties and Bluetooth-enabled battery monitoring on select models. With a focus on safety, efficiency, and sustainability, Redodo remains a trusted choice for residential and commercial energy needs.

Rododo’s product range includes 12V, 24V, 36V, and 48V LiFePO4 batteries, chargers, inverters, and solar accessories. Their biggest battery is a 48V/100Ah pack intended for golf cars.

The Redodo 24V 100Ah BT is packed in a foam-padded, recycled cardboard box that protects the battery well during shipping. The user manual, warranty card, and safety recommendations come in a nice document pouch and some bonus Redodo stickers.

At a glance

When I unwrapped the package, my wife ironically asked if I had started reviewing tractor batteries because this Redodo looked just like one. It measures 532*207*215 mm (20.95*8.15*8.5 inch) and roughly weighs 22 kg (48.5lb). The ABS case has two rope handles for easy manipulation (two hands or two persons). It has two M8 terminals on the top, black for negative and red for positive.  I don’t know if this is common, but I would have liked to have a separate, dedicated connector for charging, even if it was lower power.

The battery uses LiFePO4 prismatic cells with a cycle life of 4,000. The pack has a nominal voltage of 25.6V, a rated capacity of 100Ah, and an internal resistance of ≤40mΩ.
The recommended charging voltage is 28.8V ± 0.4V without exceeding 20A (0.2C).

Two QR codes are on top of the battery: one allows you to download the mobile app, and the other allows you to add the battery to the monitoring app. In factory mode, Bluetooth connectivity is disabled, and you need to start charging the battery to activate it. The Redodo mobile app is available for both Android and iOS devices.

As you can see in the photo below, the Redodo app can monitor individual batteries, or you can configure and manage custom setups (battery systems for applications such as RVs, vans, boats, households, or off-grid cabins). Besides power, current, voltage, and capacity, the app provides health status from the BMS, such as cell balance state, cell conditions, and BMS operation.

Technical parameters

Pricing, Availability, and Options

Directly from Redodo, the 24V 100Ah Bluetooth is currently on sale for just €485.99 (€659.99) in their German warehouse (Europe region – According to local VAT, the price may slightly vary). The non-BT version, in the US, can be ordered for $409.99 (46% off), and you can opt for two or four-pack combos as well. This lithium battery is also available on their Canadian online store. Redodo batteries come with a 5-year hassle-free warranty (without additional costs) and a 30-day money-back guarantee. A compatible 29.2V 20A charger that charges a 100Ah battery in 5 hours or a 200Ah battery in 10 hours is priced at just $119.99.

Key features

• [Dependable Power, Double the Performance] With higher voltage, the Redodo 24V 100Ah LiFePO4 battery effortlessly replaces two 12V 100Ah AGM batteries in series. Save on wiring costs and skip the hassle of balancing voltages.
• [Bluetooth Control, Real-Time Monitoring] Featuring Bluetooth connectivity, it supports mobile APP control for battery discharge and shutdown via smartphone. It monitors in real-time SOC, charging/discharging/idle status, voltage, current, remaining capacity, temperature, and other battery conditions. Scan the QR code of the Bluetooth device to connect to the battery automatically.
• [Comprehensive Safety with Advanced BMS] Equipped with cutting-edge technology and a built-in 100A Battery Management System (BMS). This system safeguards against overcharging, over-discharging, overcurrent, short circuits, and high temperatures.
• [Perfect for High-Thrust Trolling Motors] Elevate your trolling motor’s performance with the Redodo 24V 100Ah LiFePO4 battery, designed for 70-100 lb thrust motors. Enjoy stable, reliable power that enhances performance and extends your time on the water.
• [Up to 20.48kWh storage capacity] Redodo 24V lithium batteries are perfect for expanding your home backup system. They can be configured up to 4P2S, creating a powerful 51.2V 400Ah LiFePO4 battery system with a maximum capacity of 20.48kWh. Built to last and deliver reliable performance, Redodo batteries are ideal for off-grid setups that need higher power output and longer battery life.

How much can it last with one charge?

Using DC-DC converters, you can directly power 12V camping devices or a 24V truck air conditioner/heater. By connecting two in series, you can power 48V RV appliances. You can power most of your household appliances and power tools by connecting to a 220V or 110V inverter (depending on your country). Remember that any power conversion means heat and energy lost. So, if you plan to use a 12V device, you should use 12V batteries. Also, count that DC-AC inverters have an 85-95% efficiency (5-15% loss).

In the table below, you can find some examples of expected runtimes.

Personally, I will use this battery to charge my FPV LiPos at the flight field. I use a wide range of packs, from 2S 450mAh (3.42Wh) to 6S 8000mAh (177wh). Most LiPo chargers support a DC input from 10 to 30V, which can be powered directly from this Redodo 24V battery. In addition to the BMS’s over-discharge protection, you can set the input voltage bottom limit in the charger to 20V. The beauty of this setup is that you can transfer energy back into the Redodo from unused, fully charged LiPos when you want to put them in storage mode (3.8V/cell).

The table below provides some examples of how many batteries you can charge from zero to full using the Redodo 24V 100Ah BT as the power source.

How can it be charged?

The charging process of LiFePO4 batteries is voltage-sensitive. Maintaining the correct charging levels ensures efficiency and safety, while an incorrect voltage can cause undercharging or overheating, potentially impacting battery lifespan and performance. This Redodo 24V battery features an integrated Battery Management System (BMS) that monitors and manages various parameters such as voltage, current, temperature, and the state of charge of individual cells, ensuring long-lasting service life.

The CC/CV (Constant Current – Constant Voltage) method is the standard approach for charging lithium-ion batteries and is recommended by Redodo for this pack. Initially, the charger operates in CC mode, delivering a steady current while the battery voltage gradually increases. Once the voltage reaches a preset limit, the charging process shifts to CV mode, where the voltage remains constant, and the current gradually decreases until the battery is fully charged.

When I agreed to review this Redodo 24V 100Ah LiFePO4 battery, I planned to use it in tandem with the Bluetti AC200L power station, as it is designed to extend its internal storage capacity. Later, I found out that Bluetti favors its own expansion batteries and offers compatibility only with them.

Depending on how you want to use the battery, it can be charged in the following ways:

• Dedicated LiFePO4 AC/DC charger
• Solar panel and solar charge controller
• Using an inverter with a built-in charger

Important Tips:

Never overcharge or allow the battery to discharge below 20% (if your BMS allows for deeper discharges, avoid going below 10% for optimal life). Charge in a well-ventilated area and avoid charging in extreme temperatures (below 0°C or above 45°C). Using a dedicated smart charger designed explicitly for LiFePO4 cells is crucial. Lastly, and most importantly, ensure that you connect the charger’s positive and negative terminals to the battery’s corresponding terminals.

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Since 2014, FirstQuadcopter has reviewed, thoroughly tested, and rated hundreds of products, including drones, gimbals, power stations, action cameras, 3D printers, video lights, and other high-tech gear to help you make better buying decisions.

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