CASTLE CASTLE CREATIONS CAPACITOR PACK, 8S MAX (35V), 2240UF P-CC011-0148-00

• Product Type: External Capacitor Pack
• Brand: Castle Creations
• Model Number: P-CC011-0148-00
• Barcode: 819326012136
• Total Capacitance: 2240µF
• Individual Capacitor Specification: Four 560µF capacitors
• Voltage Rating: 35V
• Maximum LiPo Battery Compatibility: 8S LiPo
• Length: 45.7mm
• Width: 19.8mm
• Height: 22.1mm
• Ripple Voltage Compensation: Negates ripple caused by up to approximately 12 inches of additional battery lead length
• Recommended Installation: As close to ESC as possible for maximum effectiveness
• Stackability: Multiple CapPacks can be used in the same system for enhanced ripple reduction
• Compatible Applications: All brushless RC power systems, RC helicopters (500-class and smaller), high-performance RC cars and trucks, fixed-wing electric aircraft, any system with extended battery-to-ESC lead lengths
• Ideal Use Cases: Hard acceleration, aggressive collective inputs, drag racing, high-speed runs, Y-harness configurations
• Ripple Voltage Target: Peaks should be less than 10% of total pack voltage
• Alternative Product for Higher Voltages: 880µF 50V CapPack for systems greater than 8S (over 35V)

Overview

The Castle Creations Capacitor Pack 8S Max (35V) – 2240µF is an essential upgrade for anyone running serious brushless RC power systems across helicopters, RC cars, trucks, and fixed-wing aircraft. This external capacitor bank is designed to stabilise your electrical system and reduce voltage ripple, which occurs during hard acceleration, aggressive manoeuvres, and when battery lead wires are longer than standard. Whether you're a UK RC enthusiast pushing your brushless motor to the limit or a competitive racer demanding maximum performance, this CapPack delivers the clean power your ESC needs to perform at its best.

Ripple voltage is one of the biggest enemies of electronic speed controllers – it puts unnecessary stress on your ESC's onboard capacitors and can degrade performance during high-demand situations. By adding the Castle Creations Capacitor Pack to your RC car, helicopter, or aircraft, you're essentially giving your entire electrical system a performance buffer that maintains stable voltage under the toughest conditions. This is particularly valuable for RC enthusiasts in the UK who regularly tackle drag racing, high-speed runs, collective pulls on helicopters, and other demanding applications where every volt counts.

Designed specifically for LiPo battery systems up to 8S (35V maximum), this CapPack uses four 560µF capacitors totalling 2240µF of capacitance, making it one of the most effective external ripple-reduction solutions available for brushless RC systems. Installation is straightforward – mount it as close to your ESC as possible – and the compact dimensions ensure it fits in tight spaces on modern RC vehicles and aircraft.

Key Features

• 2240µF Total Capacitance Bank — This CapPack combines four 560µF capacitors rated at 35V, providing substantial ripple reduction that eases the workload on your ESC's onboard capacitors and helps maintain cleaner, more stable power delivery throughout your run.
• 8S LiPo Compatibility — Rated for up to 8S LiPo battery systems (35V maximum), this capacitor pack perfectly matches high-performance brushless setups commonly used in competitive drag racing, speed running, and aggressive RC car and truck applications.
• Reduces Ripple Voltage Stress — Ripple voltage is hard on electronic speed controllers; this capacitor pack significantly reduces ripple and stress on your ESC's internal capacitors, extending controller lifespan and improving performance stability during hard acceleration and demanding manoeuvres.
• Compensates for Extended Battery Lead Length — The CapPack effectively negates ripple voltage introduced by adding up to approximately 12 inches of battery lead length, making it ideal for vehicles with extended battery-to-ESC distances or helicopter Y-harness configurations.
• Compact, Professional Design — Measuring just 45.7mm long, 19.8mm wide, and 22.1mm tall, this capacitor pack fits neatly in tight spaces and can be installed as close to your ESC as possible for maximum effectiveness without compromising vehicle layout.
• Multi-Application Versatility — Equally at home in RC helicopters, high-performance RC cars and trucks, or electric fixed-wing aircraft, this CapPack is a universal upgrade for any brushless power system struggling with ripple voltage issues.
• Stackable for Extreme Applications — In demanding racing scenarios or high-performance applications, multiple CapPacks can be used together in the same system, each installed as close to the ESC as possible, for even greater ripple reduction and power stability.

Technical Performance

The Castle Creations Capacitor Pack 8S Max represents the pinnacle of external capacitor design for brushless RC systems. With 2240µF of total capacitance spread across four professional-grade 560µF capacitors, each rated at 35V, this component provides substantial electrical buffering that stabilises voltage delivery during the most demanding driving and flying scenarios. The engineering approach here is straightforward but highly effective: by placing capacitors external to your ESC and as close to it as possible, you create a local power reserve that absorbs voltage spikes and suppresses ripple caused by rapid current changes during acceleration or aggressive collective inputs in helicopters. The 35V maximum rating ensures full compatibility with 8S LiPo battery systems, which are standard in competitive RC drag racing, high-speed RC cars and trucks, and powerful electric aircraft in the UK RC market. The compact physical dimensions – 45.7mm length, 19.8mm width, 22.1mm height – demonstrate excellent space efficiency without sacrificing capacitive performance. Castle Creations' design methodology focuses on installation proximity to the ESC; the closer this CapPack sits to your controller, the more effectively it suppresses ripple and stabilises power delivery. Professional Castle controllers equipped with data logging capabilities can measure ripple voltage during operation, and best practice guidelines suggest keeping ripple voltage peaks below 10% of your total pack voltage. This CapPack makes achieving that target significantly easier, particularly in systems suffering from long battery wires, high torque applications, or aggressive flying manoeuvres that would otherwise stress even high-quality ESCs.

What's in the Box

• Castle Creations Capacitor Pack 8S Max (35V) – 2240µF assembly (P-CC011-0148-00)
• Four 560µF, 35V capacitors in integrated housing

Suggested Applications and Compatibility

• RC Helicopters — Highly recommended for 500-class and smaller helicopter applications where Y-harnesses and long lead wires can bleed voltage, and where hard collective pulls can strain even the most powerful batteries, requiring stable power delivery under sustained high current demand.
• RC Cars and Trucks — Essential for high-performance RC car and truck applications, particularly drag racing and high-speed runs where rapid throttle changes from 0 to 100% create enormous electrical loads and ripple voltage that can limit performance and damage controllers.
• Fixed-Wing Electric Aircraft — Beneficial in larger electric-powered aircraft where extended battery-to-ESC lead lengths add inductance and increase ripple voltage; this CapPack effectively negates ripple caused by the addition of up to 12 inches of battery wire length.
• Any Brushless RC System with Long Battery Wires — Compatible with all brushless motor applications where standard battery lead lengths have been extended or where Y-harnesses create voltage bleed.

Installation and Optimisation

For best results, install the Castle Creations Capacitor Pack as close to your ESC as possible. This proximity maximises the effectiveness of the capacitor bank in suppressing ripple and stabilising power delivery. In demanding applications requiring extreme ripple reduction, multiple CapPacks can be used simultaneously, with each unit installed as close to the ESC as possible. If your brushless system exhibits ripple voltage peaks exceeding 10% of total pack voltage under peak loads (measurable via Castle controllers with data logging), consider using this CapPack in combination with other optimisations: higher discharge rating (C Rating) batteries, shorter battery wires, higher current rated connectors, improved gearing, or a reduced motor load. For battery systems greater than 8S (exceeding 35V), you will require the Castle Creations 880µF 50V CapPack instead.

Frequently Asked Questions

• What is ripple voltage and why does it matter in RC systems? — Ripple voltage is the unwanted variation in electrical supply caused by rapid current changes during hard acceleration, aggressive manoeuvres, or long battery wires. This ripple voltage stresses your ESC's onboard capacitors and can reduce performance and lifespan. The Castle Creations CapPack reduces ripple voltage, easing the load on your controller and maintaining stable power delivery.
• Will this capacitor pack improve my RC car or truck's performance? — Yes, particularly in high-demand applications like drag racing and high-speed runs. By reducing ripple voltage and stabilising power delivery, the CapPack allows your ESC and motor to operate more efficiently and reliably under extreme loads, often translating to more consistent acceleration and smoother power delivery.
• Is this suitable for beginners? — The Castle Creations Capacitor Pack is most beneficial for advanced users running high-performance brushless systems, particularly in competitive or demanding applications. However, any RC enthusiast experiencing voltage stability issues, running extended battery leads, or flying aggressive helicopter manoeuvres will benefit from this upgrade.
• What battery does this need? — This CapPack does not require its own battery; it works with any brushless RC system using LiPo batteries up to 8S (35V maximum). It simply connects to your existing power system and helps stabilise voltage from your current battery.
• Can I use multiple CapPacks? — Yes, multiple CapPacks can be used in the same system for even greater ripple reduction. This is recommended for extreme applications and demanding racing scenarios. Each unit should be installed as close to the ESC as possible.
• What is the difference between this 8S model and other Castle CapPacks? — This 8S Max model is rated for up to 35V (8S LiPo) with 2240µF capacitance. Castle also manufactures the 880µF 50V CapPack for systems exceeding 8S batteries. Choose the 8S Max for standard high-performance brushless systems up to 8S; choose the 50V model for systems running 9S or higher.
• How do I know if I need this capacitor pack? — You may benefit from this CapPack if you experience: voltage ripple under hard acceleration, long battery lead wires (particularly in helicopters with Y-harnesses), ESC performance issues during aggressive driving or flying, or ripple voltage readings exceeding 10% of total pack voltage via Castle controllers with data logging.
• Can I install this on my helicopter? — Absolutely. The Castle Creations CapPack is highly recommended for 500-class and smaller helicopters, particularly where Y-harnesses and long leads create voltage bleed and where hard collective pulls demand stable, clean power. The compact dimensions make it ideal for tight helicopter frames.

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 Castle Creations Capacitor Pack 8S Max (35V) 2240µF 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.

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