- Battery Type: LiPo (Lithium Polymer)
- Number of Cells: 2S (2-cell)
- Nominal Voltage: 7.4V
- Voltage per Cell: 3.7V
- Capacity: 350 mAh
- Continuous Discharge Rating: 30C
- Maximum Continuous Discharge Current: 10.5 amps
- Maximum Charge Rate: 5C
- Maximum Charge Current: 1.75 amps
- Primary Connector: PH 2.0 High-Current Ultra Micro plug
- Balance Connector: JST-XH
- Application: SCX24
- Battery Weight: 0.85 oz (24g)
- Battery Dimensions: 0.5 x 1.12 x 2.19 inches (13 x 28 x 56 mm)
- Package Contents: 1x 7.4V 350mAh 2S LiPo Battery
- Accessories Needed: Compatible Charger and Charging Bag
Overview
The Spektrum 7.4V 350mAh 2S LiPo battery is a compact, high-performance power solution designed specifically for ultra-micro RC models like the SCX24 crawler. This 2-cell lithium polymer battery delivers reliable power in a lightweight package, making it ideal for hobbyists seeking dependable performance in their small-scale RC cars and crawlers. Whether you're an experienced RC enthusiast or exploring the world of RC models for the first time, this battery provides the perfect balance of capacity and portability for extended run times without adding excessive weight to your vehicle.
As an authorised Spektrum retailer, RC Model Shop stocks genuine Spektrum batteries that meet the highest quality standards. This particular LiPo pack is engineered to deliver consistent voltage output and reliable performance, making it a trusted choice for SCX24 owners across the UK. The battery is prewired with professional-grade connectors, allowing for easy installation and quick swaps between charging sessions, so you can spend more time driving and less time setting up your RC crawler.
Whether you're bashing around the garden or tackling technical terrain at your local RC club, this Spektrum battery has been proven to deliver the power you need. Its compact dimensions and lightweight construction ensure it won't compromise your vehicle's handling or balance, whilst the 30C C-rating provides plenty of current for responsive acceleration and consistent performance throughout your driving sessions.
Key Features
- 2S LiPo Chemistry — This battery uses 2-cell lithium polymer technology, which is the standard for modern RC vehicles because it offers superior energy density compared to older NiMH batteries, delivering more power in a smaller, lighter package that won't weigh down your ultra-micro RC crawler.
- 7.4V Nominal Voltage — The dual-cell configuration produces 7.4 volts nominally (3.7V per cell), which is the ideal voltage for SCX24 models and other ultra-micro crawlers, ensuring optimal performance from motors and electronics designed for this voltage range.
- 350mAh Capacity — With 350 milliamp-hours of capacity, this battery provides sufficient energy for extended RC driving sessions without becoming excessively heavy, striking the perfect balance between runtime and portability for small-scale models.
- 30C Continuous Discharge Rating — The 30C rating means this battery can safely deliver 10.5 amps of continuous current (30 × 0.350), which is more than adequate for SCX24 crawlers and other ultra-micro models, providing responsive throttle control and reliable acceleration on demand.
- 5C Maximum Charge Rate — You can charge this battery at a maximum rate of 5C, which equates to 1.75 amps, allowing for quick recharge cycles between driving sessions without compromising battery health or safety, though slower charging rates will extend the battery's overall lifespan.
- PH 2.0 High-Current Ultra Micro Connector — The battery is prewired with a PH 2.0 connector, which is a high-current ultra-micro plug specifically designed for small-scale RC applications, providing reliable electrical contact and easy plug-and-play installation into compatible SCX24 models.
- JST-XH Balance Connector — The included JST-XH balance connector allows you to monitor and balance each individual cell during charging, which is essential for maintaining cell health, maximising battery lifespan, and ensuring safe operation of your LiPo pack.
- Compact Dimensions — Measuring just 0.5 x 1.12 x 2.19 inches (13 x 28 x 56mm), this battery fits perfectly into the tight battery compartments of ultra-micro crawlers without modification, and its small footprint helps maintain your vehicle's centre of gravity for optimal handling characteristics.
- Lightweight Construction — At only 0.85 ounces (24 grams), this battery adds minimal weight to your RC crawler, which is crucial for maintaining agility and responsiveness, especially when tackling technical terrain where every gram of weight matters for climbing performance and manoeuvrability.
- Factory Prewired — This battery arrives fully assembled with all connectors already attached, eliminating the need for soldering or complicated setup, so you can unbox it and start driving immediately without requiring additional tools or technical knowledge.
Technical Performance
The Spektrum 7.4V 350mAh 2S LiPo battery represents the pinnacle of ultra-micro battery design, combining proven lithium polymer chemistry with carefully engineered specifications for SCX24 crawlers and similar small-scale RC vehicles. The 2S configuration delivers 7.4 volts of nominal power, with each cell capable of reaching 4.2 volts when fully charged for a maximum output of 8.4 volts, providing plenty of punch for responsive vehicle performance. The 350mAh capacity has been precisely calibrated to deliver extended runtime without adding excessive weight that could compromise climbing ability or agility on technical terrain. Build quality is exceptional throughout, with the battery pack utilising premium LiPo cells capable of handling the 30C continuous discharge rating, which means the pack can safely deliver 10.5 amps of current for demanding applications. The PH 2.0 connector is manufactured to ultra-micro specifications, ensuring secure electrical contact without the bulk or weight of larger connectors used in bigger RC models. The JST-XH balance connector uses the proven XT-style connection system, making it compatible with virtually all quality LiPo chargers available in the UK RC market. When charged at the recommended 5C rate (1.75 amps), this battery reaches full charge in approximately 20 minutes under ideal conditions, though slower charging will extend cell lifespan. The lightweight 24-gram construction ensures minimal impact on vehicle weight distribution, crucial for maintaining the precise weight balance that SCX24 crawlers require for optimal suspension geometry and climbing performance. All Spektrum batteries undergo rigorous quality control testing to ensure consistent cell matching, proper voltage balancing, and safe operation under normal use conditions.
What's in the Box
- 1x Spektrum 7.4V 350mAh 2S LiPo Battery with PH 2.0 connector and JST-XH balance connector
What You Need to Complete
- Compatible LiPo battery charger (a quality 2S-capable charger is essential for safe charging and cell balancing)
- Charging bag or fireproof LiPo charging case (highly recommended for safe storage and charging to prevent fire risk)
Frequently Asked Questions
- Is the Spektrum 7.4V 350mAh 2S LiPo suitable for SCX24 crawlers? — Yes, this battery is specifically designed for SCX24 models and other ultra-micro crawlers. The 7.4V voltage matches the requirements of these vehicles, whilst the 350mAh capacity provides sufficient runtime without adding excessive weight to your crawler, making it the ideal choice for SCX24 owners in the UK.
- How long does the battery last on a single charge? — Runtime varies depending on your driving style and terrain, but this 350mAh battery typically provides 15-30 minutes of continuous driving on a single charge for SCX24 models. Lighter driving on smooth surfaces will yield longer runtimes, whilst aggressive bashing on rough terrain will consume the battery faster.
- What charger do I need for this LiPo battery? — You need a dedicated LiPo battery charger capable of handling 2S batteries and balancing via the JST-XH connector. Any quality RC charger available in the UK market with 2S LiPo support and balance charging will work perfectly. Make sure not to use NiMH or NiCd chargers, as they are incompatible and dangerous with LiPo cells.
- Can I charge this battery quickly? — The maximum safe charge rate for this battery is 5C, which equates to 1.75 amps. Charging at this rate will fully charge the battery in approximately 20 minutes. However, charging at slower rates such as 2C (0.7 amps) or 1C (0.35 amps) will extend the overall lifespan of your battery, making it more economical over time.
- Is this battery safe for beginners? — Yes, LiPo batteries are safe when used correctly following proper procedures. Always charge in a fireproof LiPo charging bag, never overcharge the battery, avoid physical damage to the pack, and store the battery in a cool, dry place when not in use. If you follow these simple guidelines, this battery will provide reliable and safe performance.
- What does the 30C C-rating mean? — The 30C C-rating indicates how much current the battery can safely discharge continuously. Multiplying 30 by the 350mAh capacity (0.35 amps) gives 10.5 amps, meaning this battery can safely deliver 10.5 amps of continuous current, which is more than sufficient for SCX24 crawlers and other ultra-micro models.
- How do I store this battery safely? — Always store LiPo batteries in a cool, dry location away from direct sunlight and heat sources. Store the battery in a fireproof charging bag or metal ammunition box. Never store a fully charged battery for extended periods; instead, store at approximately 50% charge (3.85V per cell) if not using the battery for more than a few weeks.
- What is the balance connector used for? — The JST-XH balance connector allows your charger to monitor the voltage of each individual cell during charging and to balance them if they drift apart. This keeps both cells at the same voltage, which maximises runtime, performance, and battery lifespan. Most modern LiPo chargers use the balance connector for safe and optimal charging.
- Is this battery better than NiMH batteries? — LiPo batteries like this Spektrum pack offer significant advantages over older NiMH technology including higher energy density (more power in less weight), consistent voltage delivery throughout the charge cycle, faster charging times, and better performance for demanding RC applications. For modern RC crawlers like the SCX24, LiPo is the standard choice.
- Can I use this battery with other RC models? — This battery is optimised for ultra-micro models with PH 2.0 connectors like the SCX24. Other RC models may use different connectors such as XT30, XT60, or XT90. Always verify that your RC model's connector matches before attempting to use this battery, as using an incompatible connector could cause safety hazards or damage your vehicle.
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 SPM 7.4v 350mAh 2S LiPo: PH2.0 O-SPMX3502S30 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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