Overview
The Etronix Li-Po Regulator 7.4V 5A with casing is a clever and compact solution for powering your receiver pack from a wide range of battery sources. This cunning little unit allows you to use any battery from 9 to 25 volts to run your RX pack, making it an essential accessory for RC car UK enthusiasts who want flexibility in their power configurations. Whether you're running a brushless RC buggy, a ready to run RC truck, or any other RC vehicle setup, this regulator ensures your receiver gets a stable, regulated 7.4V output regardless of your input voltage source.
The Etronix regulator is perfect for builders and competitors who want to consolidate their power systems without compromising on receiver stability. With its factory-fitted JST connectors and protected casing, this unit takes the guesswork out of power delivery and eliminates the risk of voltage spikes damaging your sensitive receiver electronics. Measuring just 20x14x49mm and weighing only 19g, it's designed to fit into even the tightest installation spaces on your RC model.
For UK RC hobbyists looking for a reliable, regulated power solution that won't break the bank, the Etronix Li-Po Regulator represents excellent value. It's the kind of accessory that serious RC enthusiasts recommend to friends and fellow competitors because it simply works reliably time after time.
Key Features
- Wide Input Voltage Range (9V to 25V) — This regulator accepts input voltages anywhere from 9V to 25V, meaning you can power it from single-cell, multi-cell, or even higher voltage battery packs, giving you maximum flexibility in your power configuration without requiring multiple regulators for different setups.
- Regulated 7.4V Output — The unit delivers a constant, stable 7.4V output regardless of input voltage fluctuations, ensuring your receiver electronics receive clean power that maintains consistent performance throughout your run without voltage sag issues.
- 5A Current Capacity — With a maximum output current of 5 amps, this regulator can power standard receiver packs with plenty of headroom, making it suitable for most RC car, truck, buggy and crawler applications running typical servo loads.
- Factory-Installed Female JST Input Connector — The input connector is pre-fitted with a female JST connector, clearly denoting where your power source plugs in, eliminating confusion during setup and ensuring correct polarity connection.
- Factory-Installed Male JST Output Connector — The output features a pre-fitted male JST connector, making it immediately compatible with standard receiver packs and servo leads without requiring additional adapters or modifications.
- Protective Casing — The regulator comes fully enclosed in a protective casing measuring 20x14x49mm, protecting internal components from damage, dust, and accidental short circuits during transport and operation.
- Lightweight Design — At just 19g, this regulator adds minimal weight to your build, which is crucial for maintaining optimal weight distribution and handling characteristics in competitive RC racing and bashing applications.
- Compact Form Factor — The small 20x14x49mm dimensions allow easy integration into tight battery trays, receiver boxes, and installation spaces where space is at a premium on your RC model.
Technical Performance
The Etronix Li-Po Regulator 7.4V 5A delivers impressive technical performance in a remarkably compact package. Built to Etronix's quality standards, this regulator uses voltage regulation circuitry that handles input voltages ranging from 9V to 25V with efficiency, outputting a stable 7.4V suitable for powering receiver packs in RC cars, trucks, buggies, crawlers and other remote control vehicles. The 5-amp output capacity provides ample current to run multiple servos and receiver systems simultaneously without voltage drooping, which is essential during high-demand manoeuvres where servo loads spike briefly. The engineering is straightforward and reliable — this isn't a cutting-edge piece of equipment, but rather a proven solution that has earned the trust of RC hobbyists across the UK and beyond. The factory-installed JST connectors are a major convenience factor, eliminating the need to source and solder your own connectors. The protective casing around the electronics ensures long-term durability and protects against the inevitable bumps, crashes, and vibrations that come with RC hobby use. Whether you're running a brushless RC buggy pulling hard at maximum throttle, a ready to run RC truck bouncing over rough terrain, or a precision crawler navigating rocky obstacles, this regulator maintains receiver voltage stability that lets your electronics perform at their best.
What's in the Box
- Etronix Li-Po Regulator 7.4V 5A with protective casing
- Factory-installed female JST input connector
- Factory-installed male JST output connector
Frequently Asked Questions
- What battery voltage can I use with this regulator? — The Etronix regulator accepts input voltages between 9V and 25V, so you can power it from 2S (7.4V) right up to 6S (22.2V) LiPo batteries, making it compatible with virtually any modern RC power pack configuration.
- What output voltage does this regulator provide? — This unit delivers a regulated 7.4V output, which is the standard voltage for most modern receiver packs in RC cars, buggies, trucks and crawlers used throughout the UK.
- Is this suitable for beginners to RC? — Yes, this regulator is ideal for beginners because it's ready to use with factory-fitted connectors requiring no soldering or technical modification, and the wide input voltage range means you can use whatever batteries you have available without compatibility concerns.
- How much current can this regulator supply? — The unit is rated for 5 amps output, which is more than sufficient to power standard receiver packs with multiple servos, even under the demanding conditions of competitive RC racing or aggressive bashing.
- Why would I need a voltage regulator for my RC setup? — A voltage regulator ensures your receiver electronics receive stable, clean power regardless of input voltage source, preventing receiver shutdowns from voltage sag during high-demand servo operation and protecting sensitive electronics from overvoltage when using higher-voltage battery packs.
- How does this compare to other 7.4V regulators? — The Etronix regulator stands out for its compact dimensions, lightweight design, generous 5-amp output capacity, and especially its factory-fitted JST connectors that eliminate the need for soldering, making it an excellent choice for builders who want convenience alongside reliability.
- Can I use this with a 6S LiPo battery? — Yes, a 6S LiPo (nominal 22.2V) falls well within the 9V to 25V input range, so this regulator will accept and regulate 6S battery packs without any issues, though you should ensure your battery pack's peak voltage remains below 25V.
- What are the physical dimensions? — The regulator measures 20x14x49mm and weighs just 19g, making it small enough to fit into battery trays and receiver compartments even on compact ready to run RC models.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the ETRONIX LI-PO REGULATOR 7.4V 5A w/CASING 20x14x49mm ET0557 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
- Brand: Etronix
- Model Number: ET0557
- Product Type: Li-Po Voltage Regulator
- Input Voltage Range: 9V to 25V
- Output Regulated Voltage: 7.4V
- Output Current (Maximum): 5A
- Weight: 19g
- Dimensions: 20x14x49mm
- Input Connector: Female JST (factory installed)
- Output Connector: Male JST (factory installed)
- Housing: Protective casing included
- Application: RX pack power supply for RC cars, buggies, trucks and crawlers
- Suitable Battery Input: 2S to 6S LiPo packs and other 9-25V sources
- Protection: Enclosed casing protects components from damage and interference
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
