Overview
The Hobbywing STD Capacitors Module B (HW30840008) is a professional-grade power capacitor upgrade specifically designed for the XERUN XR10 Stock Spec G2 brushless ESC. This low-impedance capacitor module is engineered to dramatically improve your RC car's performance characteristics, particularly during high-demand acceleration phases. Whether you're racing competitively or pushing your RC car to its limits on the track, this capacitor pack delivers measurable improvements in power delivery and electrical stability that serious RC enthusiasts across the UK will appreciate.
Capacitors are critical power management components in modern brushless RC systems, and the Hobbywing STD Capacitors Module B represents a significant upgrade over standard factory capacitors. By reducing internal resistance and improving ripple current handling, this module minimises electrical noise and interference that can degrade performance and damage sensitive electronics. It's the perfect upgrade for racers who demand reliability, consistency and maximum acceleration response from their XERUN XR10 Stock Spec G2 ESC.
This is an accessory designed for upgrading your existing car ESC, not a standalone product. If you already own a XERUN XR10 Stock Spec G2 brushless ESC and want to unlock its full potential, this is the upgrade you've been looking for. RC car UK enthusiasts and competitors trust Hobbywing components for their engineering quality and proven performance gains.
Key Features
- Ultra-Low Internal Resistance — With an internal resistance of just 0.002?, this capacitor module significantly outperforms competing brands that typically measure 0.012? or higher. Lower resistance means less voltage drop, less heat generation, and more responsive power delivery to your motor when you need it most, resulting in noticeably sharper acceleration off the line.
- Exceptional Ripple Current Endurance — The module is engineered to handle 24 amps of ripple current, compared to just 3.5 amps from some famous competing brands. This superior ripple current handling capability dramatically reduces electrical interference generated by the rapid switching of the ESC power tubes, resulting in cleaner power delivery and more stable performance across the entire throttle range.
- Improved Start-Up Acceleration — By installing this capacitor module, you'll experience dramatically improved acceleration from a standstill. The low-impedance design ensures that maximum current is available to your motor instantly, without the voltage sag that reduces acceleration in stock setups. This is particularly noticeable in racing conditions where every tenth of a second counts.
- Reduced Electrical Interference — The great ripple current endurance of this module significantly reduces the electromagnetic interference generated by your ESC's power stage switching. This means cleaner operation of your radio receiver and servo systems, resulting in more precise control and fewer glitches during high-speed runs.
- Low Heat Generation — The extremely low internal resistance means less power is wasted as heat within the capacitor module itself. This contributes to overall system reliability and longer component lifespan, as excess heat is one of the primary causes of premature failure in power electronics.
- Compact and Lightweight Design — Despite delivering three 1000µF capacitors at 16V, this module features a small form factor and light weight, making installation straightforward without adding unnecessary bulk or weight to your car. This is especially important in stock-class racing where weight budgets are critical.
- Three Capacitor Configuration — The module provides three 1000µF/16V capacitors in a single installation-ready package, giving you both the capacity and redundancy you need for stable power delivery without requiring multiple separate installations.
Technical Performance
The Hobbywing STD Capacitors Module B achieves its outstanding performance through careful engineering of both capacitor selection and packaging. The module utilises three 1000µF/16V capacitors working in parallel, providing a combined capacitance of 3000µF with exceptional low-impedance characteristics. The 0.002? internal resistance specification is extraordinarily low for a capacitor module of this type, allowing virtually all of the available power to reach your XERUN XR10 Stock Spec G2 ESC's power stage without loss. The 24-amp ripple current endurance rating demonstrates that these are high-quality, industrial-grade capacitors selected specifically for the demands of competitive RC racing applications. This module is engineered to work seamlessly with the XERUN XR10 Stock Spec G2 ESC, providing a capacitive buffer that smooths power delivery during rapid throttle changes, high-speed cornering, and acceleration runs. The compact package design ensures that installation is straightforward and doesn't interfere with other components in your RC car's chassis, making this an ideal upgrade for serious racers looking to squeeze every last bit of performance from their stock-class setup.
What's in the Box
- Hobbywing STD Capacitors Module B (HW30840008)
- Three 1000µF/16V low-impedance capacitors in installation-ready module form
- Installation instructions
Frequently Asked Questions
- What ESC is the Hobbywing STD Capacitors Module B designed for? — This module is specifically designed for the XERUN XR10 Stock Spec G2 brushless ESC. It will not fit or work with other ESC models, so it's essential to verify that you have the correct ESC before purchasing. The XR10 Stock Spec G2 is a popular stock-class racing ESC, and this module is an official Hobbywing upgrade accessory.
- How much performance improvement will I notice? — The improvement in start-up acceleration is immediately noticeable, with sharper throttle response and faster off-the-line performance. The reduction in electrical interference may be less obvious visually but results in more consistent handling and fewer radio glitches during high-speed running. In competitive racing, these improvements can translate to measurable lap time gains.
- Is this suitable for stock-class racing? — Yes, absolutely. This module is engineered specifically for stock-class racing applications, particularly the XERUN XR10 Stock Spec G2. The compact size and lightweight design mean it won't violate weight or dimension restrictions in most stock-class racing formats, though you should always check your specific racing class rules.
- What is the difference between this module and other Hobbywing capacitor modules? — Different Hobbywing capacitor modules are designed for different ESCs and applications. The Module B features three 1000µF/16V capacitors and is optimised for the XERUN XR10 Stock Spec G2. Other modules like the Module D (two 560µF capacitors), Module C (three 560µF capacitors), Module E (four 470µF capacitors), and the Upgrade Module D (two 1000µF capacitors) are designed for different ESC models and performance requirements. Always use the module specifically recommended for your ESC.
- How difficult is installation? — Installation is straightforward and suitable for anyone with basic soldering skills. The module simply connects to your ESC's power input where the main battery connector attaches. Detailed installation instructions are included with the product, and most users report installation taking just a few minutes.
- Will this void my ESC warranty? — This is an official Hobbywing accessory designed for use with the XERUN XR10 Stock Spec G2, so it should not void your warranty. However, we recommend checking the warranty documentation that came with your ESC or contacting Hobbywing directly if you have specific warranty concerns.
- What's the difference between 0.002? internal resistance and 0.012?? — This might sound like a small difference, but it's actually significant. The 0.002? internal resistance of the Hobbywing module means it's six times lower than competing brands at 0.012?. This reduces power loss and heat generation substantially, allowing more current to reach your motor with less voltage sag during high-demand acceleration.
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 HOBBYWING STD CAPACITORS MODULE B (XR10 STOCK SPEC G2) HW30840008 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.
- Product Name: STD Capacitors Module B
- Model Number: HW30840008
- Manufacturer: Hobbywing
- Capacitor Configuration: 1000µF/16V x 3 capacitors in parallel
- Total Capacitance: 3000µF combined
- Internal Resistance: 0.002?
- Ripple Current Endurance: 24 amps
- Voltage Rating: 16V
- Compatible ESC: XERUN XR10 Stock Spec G2
- Installation Type: External capacitor module upgrade
- Form Factor: Compact and lightweight
- Purpose: Power delivery upgrade for improved start-up acceleration and reduced electrical interference
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- 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.
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