Overlander 5800mAh 14.8V 4S 35C Supersport PRO LiPo Battery with Traxxas – 3115

Overview

The Overlander 5800mAh 14.8V 4S 35C Supersport PRO LiPo Battery with Traxxas connector (model 3115) is a premium-grade battery pack engineered for RC enthusiasts who demand reliable power delivery, strong acceleration, and consistent runtime from their RC models. Whether you're bashing tough terrain in an RC car UK setup, flying high-performance FPV drones, piloting medium helicopters, or operating sport planes, this battery delivers the performance characteristics you need for extended, uninterrupted playtime. Built with premium Fullymax cells and precision-matched internal components, the Overlander Supersport PRO range represents a trusted choice for serious RC hobbyists across the UK who understand that battery performance directly impacts model responsiveness, speed delivery, and overall driving or flying experience.

This 4S LiPo battery is specifically designed for larger RC models that require sustained power delivery combined with explosive burst capability. The 5800mAh capacity provides extended session times between charges, whilst the 35C continuous discharge rate ensures smooth, predictable power delivery under heavy load. With a 65C burst rating that delivers rapid acceleration and sharp control response, this battery is ideal for competitive drivers, weekend bashers, and professional operators alike. The battery measures 153 x 46 x 34mm and weighs 519g, making it compact enough to integrate seamlessly into most larger RC platforms without adding unnecessary bulk that could compromise handling characteristics.

Overlander has engineered the Supersport PRO 35C line specifically for models that demand more than entry-level performance. Every battery pack undergoes rigorous testing to ensure consistent output across the entire discharge cycle, whilst advanced ultrasonic welding strengthens internal connections, allowing the battery to reliably handle the demands of high-performance RC applications. With no memory effect and low self-discharge characteristics, you'll enjoy more charge cycles and less downtime between adventures, whether you're enjoying casual weekend runs or serious competitive sessions.

Key Features

• 5800mAh Capacity — With 5800mAh of stored energy, this pack offers extended runtime for longer practice sessions and competitive drives, providing meaningful playtime gains over smaller capacity alternatives whilst maintaining a weight balance that doesn't compromise model performance or handling characteristics.
• 14.8V 4S Configuration — The 4S (four-cell series) setup delivers 14.8V nominal voltage, providing noticeable acceleration improvements and higher top speed capability on compatible RC car and truck systems compared to 2S or 3S alternatives, whilst enabling motors to maintain consistent torque under sustained load.
• 35C Continuous Discharge Rating — The 35C constant discharge rate ensures substantial, reliable current delivery for brisk acceleration and steady throttle response, reducing voltage sag under heavy load so your electronic speed controller receives more consistent power for smoother, more predictable control characteristics.
• 65C Burst Discharge Capability — Beyond steady-state performance, the 65C burst rating delivers a temporary power boost for those critical moments when you need extra juice, such as explosive corner exits, sudden climbs, or all-out sprints, ensuring your battery responds instantly when demanded.
• Maximum Current Specifications — With maximum continuous current of 203A and maximum burst current of 377A, this battery can reliably power demanding motor and ESC combinations whilst maintaining safety margins and thermal stability throughout your session.
• Versatile Connector Options — Available with multiple connector choices including Traxxas high-current connectors (as supplied in this model 3115), plus additional options for Deans, EC3, EC5, XT60, XT90 and XT90S (Anti-Spark) configurations, providing flexibility to match your existing RC setup without the need for adapter cables.
• Premium Cell Construction — Built using precisely matched Fullymax cells, each pack undergoes resistance, voltage and weight matching to ensure stable, high-performance power delivery and balanced cell performance throughout the battery's lifespan.
• Advanced Ultrasonic Welding — Internal connections are reinforced using advanced ultrasonic welding techniques, creating stronger, more reliable connections that can handle the sustained demands of high-performance RC models without connection degradation.
• Multi-Strand Silicone Leads with Gold-Plated Connectors — High-quality construction throughout maximises power transfer efficiency whilst reducing resistance losses, ensuring more energy reaches your speed controller and motor rather than being wasted as heat in the battery connections.
• Impact Protection and Durability — Added padding protects against impacts and vibration during transport and operation, providing extra durability and longevity without adding significant weight to your final package weight.
• Low Self-Discharge Characteristics — The Supersport PRO chemistry exhibits minimal self-discharge, meaning your battery holds its charge longer when stored between sessions, reducing the need for frequent top-up charges and keeping your battery ready for action whenever you are.
• 85.84Wh Energy Rating — The total watt-hour capacity of 85.84Wh reflects the battery's substantial energy storage capability, suitable for extended flight times on drones and planes or multiple race heats on RC cars without requiring battery swaps.
• 10AWG Wire Gauge (6mm) — The robust 10AWG (6mm) diameter power leads minimise voltage drop during high-current discharge, ensuring cleaner power delivery to your speed controller and motor for more responsive acceleration and smoother power curves.
• JST-XH Balance Connector — The balance lead uses the standard JST-XH connector type, compatible with virtually all modern LiPo balance chargers, allowing you to maintain optimal cell voltage balance for extended battery lifespan and safety.

Technical Performance

The Overlander 5800mAh 14.8V 4S 35C Supersport PRO represents a carefully engineered balance between capacity, voltage, and discharge performance for demanding RC applications. With a nominal voltage of 14.8V (4.2V nominal per cell × 4 cells), this battery delivers the high initial power output that RC enthusiasts demand whilst maintaining relatively consistent voltage delivery throughout the discharge cycle. The 35C continuous discharge rating translates to a maximum safe continuous current of 203A, which is calculated by multiplying the capacity (5.8A) by the C-rating (35), providing substantial headroom for motor systems drawing 100-150A under hard acceleration. The burst rating of 65C delivers up to 377A for brief periods, ensuring the battery can satisfy demanding motor and ESC combinations during momentary full-throttle applications. The 519g weight represents a sensible balance for a 5800mAh 4S pack; it's substantial enough to deliver the energy density users expect, yet light enough that it won't significantly compromise the weight distribution or handling characteristics of properly designed larger RC models. Built with Fullymax cells and precision-matched for resistance and voltage consistency across all four cells, the internal construction ensures that voltage sag remains minimal during hard driving, helping your speed controller maintain clean power delivery. The 10AWG (6mm) silicone-insulated power leads with gold-plated connectors minimise ohmic losses during high-current discharge, ensuring the majority of stored energy reaches your motor rather than being wasted as heat in the battery connections. The advanced ultrasonic welding of internal connections creates more durable, lower-resistance joints compared to conventional soldering, extending battery lifespan and maintaining performance consistency across hundreds of charge cycles. For RC car UK applications, helicopter operation, FPV drone work, and aerobatic plane flying, this battery delivers the consistent, reliable power that separates frustrating, voltage-sagging setups from truly responsive, high-performance systems where the battery never becomes the limiting factor.

What's in the Box

• Overlander 5800mAh 14.8V 4S 35C Supersport PRO LiPo Battery with Traxxas connector
• JST-XH balance connector lead for safe, balanced charging

What You Need to Complete

• Compatible LiPo battery charger with 4S LiPo charging mode capability (such as the Overlander VSRmini+ 10A 100W AC Charger available separately)
• LiPo safety charge sack or fireproof storage container for safe charging, storage and transport (available separately)
• RC model designed for 4S LiPo operation with compatible motor, ESC and receiver system

Frequently Asked Questions

• What does mAh mean and how does it affect runtime? — mAh stands for milliampere-hour and measures the battery's energy storage capacity. A 5800mAh battery stores significantly more energy than smaller capacity packs, translating directly to longer playtime between charges. For example, if your RC model draws an average of 80A during mixed driving, a 5800mAh pack would theoretically provide around 4.4 minutes of continuous runtime at that current draw (5.8Ah ÷ 80A). In practice, realistic mixed-use driving at varying throttle positions typically yields 10-20 minutes of meaningful playtime depending on your driving style, terrain, and model configuration.
• What does the 4S voltage rating mean, and is it right for my model? — The 4S designation indicates four lithium polymer cells connected in series, delivering 14.8V nominal voltage (or up to 16.8V when fully charged). This is a significant step up from 2S (7.4V) or 3S (11.1V) packs, providing noticeably stronger acceleration and higher top speed on compatible RC cars, trucks, and buggies. However, you must ensure your model's motor and electronic speed controller are specifically rated for 4S operation—using a 4S battery in a 2S or 3S-only model will damage your electronics and potentially cause safety hazards. Always verify your model's specifications before purchasing this battery.
• What does the 35C discharge rating mean? — The C-rating indicates how fast the battery can safely discharge its stored energy. A 35C rating means the battery can continuously deliver 35 times its capacity in amperes—in this case, 35 × 5.8A = 203A of continuous current. This ensures smooth, responsive power delivery under heavy load without the battery becoming a limiting factor in your system. The 65C burst rating provides temporary additional power for those explosive acceleration moments, delivering up to 377A for brief periods. For high-performance RC applications, a 35C rating is considered appropriate for serious drivers who demand responsive, consistent power delivery.
• Why do I need a special LiPo charger? — LiPo batteries require specialised chargers because they're sensitive to overcharging and uneven cell voltages. A proper LiPo charger with balance-charging capability monitors and charges each of the four cells individually through the JST-XH balance connector, ensuring all cells reach the same final voltage. This balanced charging maintains battery health, extends lifespan, and most importantly, ensures safety—overcharging a LiPo cell can cause overheating, swelling, and even fire. Never use a standard charger or set your balance charger to the wrong chemistry mode. Always use a charger specifically set to LiPo mode with the correct cell count (4S in this case).
• How should I store this battery between uses? — For storage periods between sessions, charge or discharge your battery to approximately 50% capacity (around 3.7-3.85V per cell, or 14.8-15.4V total voltage for a 4S pack). This storage voltage is the sweet spot that minimises cell stress and self-discharge whilst keeping the battery ready for your next session. Store the battery in a cool, dry location—never leave it in hot cars, direct sunlight, or near heat sources. Check stored batteries every couple of months and top them up to the 50% storage voltage if needed. Never allow the battery to fully discharge or remain fully charged for extended periods, as both conditions can permanently damage the cells and create safety hazards.
• What makes the Traxxas connector version special? — This model comes pre-fitted with Traxxas high-current connectors, which are standard on most Traxxas RC vehicles including the Traxxas Slash, Stampede, and similar models. The Traxxas connector is a gold-plated, high-contact-area design that minimises connection resistance and voltage drop during high-current discharge. If your model uses a different connector type (Deans, EC3, XT60, etc.), Overlander offers this same battery with alternative connector options, or you can use adapter cables between different connector types.
• Is this battery waterproof for water-based RC vehicles? — Whilst the battery's hard plastic case is splash-resistant and can handle brief water exposure during normal outdoor RC car UK operations, it is not fully waterproof and should not be submerged. If you're operating in wet conditions, ensure water doesn't come into contact with the connector terminals or balance lead. For dedicated water-based RC models, consider using waterproof battery boxes or cases specifically designed for aquatic use. Always allow the battery to fully dry after water exposure and inspect connectors for corrosion before recharging.
• How many charge cycles can I expect from this battery? — With proper care and use of a quality LiPo balance charger, the Overlander Supersport PRO batteries typically provide 300-500 full charge cycles before capacity noticeably degrades. This lifespan depends heavily on charging practices, storage conditions, and how deeply you discharge the battery during use. Avoiding full discharges, maintaining proper storage voltage, and using a quality balance charger will maximise your battery's lifespan and maintain consistent performance throughout its service life.
• What's the difference between continuous and burst discharge ratings? — The continuous 35C rating represents the sustainable current the battery can deliver indefinitely without overheating or damaging cells. The burst 65C rating is a temporary bonus available for just a few seconds during peak acceleration moments. Think of continuous discharge as cruising speed and burst discharge as maximum throttle—you can't maintain full burst indefinitely, but you can access that extra power when you need it most for aggressive manoeuvres, explosive acceleration, or climbing challenges.
• Can I use this battery in multiple models? — Yes, as long as each model is specifically rated for 4S LiPo operation with the Traxxas connector (or you use appropriate adapter cables for other connector types). This battery is versatile enough for RC cars, trucks, FPV drones, medium helicopters, and sport planes—the key limitation is ensuring each application's motor and ESC are rated for 14.8V operation. Never use a 4S battery in a model designed for 3S or lower, as this will damage your electronics.
• Is this suitable for beginners? — Whilst the Overlander Supersport PRO delivers excellent performance, LiPo batteries require more careful handling and charging procedures than beginner-friendly NiMH batteries. You'll need to invest in a proper LiPo balance charger, understand charging procedures, storage requirements, and safety protocols. If you're completely new to RC, you might start with a beginner-oriented model that uses NiMH batteries, then upgrade to this 4S pack once you're comfortable with LiPo maintenance. However, if you're upgrading an existing RC car to better performance, this battery is an excellent choice that will transform your model's responsiveness and speed.

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 Overlander 5800mAh 14.8V 4S 35C Supersport PRO LiPo Battery with Traxxas – 3115 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.