E-flite 500mAh 1S 3.7V 25C LiPo Battery: JST EFLB5001S25 is compatible with the following models:
A-BLH4100
A-BLH4180
- Battery Type: LiPo (Lithium Polymer)
- Capacity: 500mAh
- Configuration: 1S (Single Cell)
- Nominal Voltage: 3.7V
- Energy Content: 1.9 Wh (Watt-hours)
- Maximum Continuous Discharge Rate: 25C
- Maximum Continuous Current: 12.5A
- Connector Type: JST (Japan Solderless Terminal)
- Length: 59.5mm (2.35 inches)
- Width: 19.0mm (0.75 inches)
- Height: 7.5mm (0.30 inches)
- Weight: 14.5g (0.51 oz)
- Case Type: Soft Case
- Compatible Models: Blade SR 120, Blade SR 120S2, Blade mQX series, Blade 180 QX, Blade 120 S, E-flite UMX series, E-flite Twin Otter UMX, HobbyZone Mini Aeroscout
- Model Number: EFLB5001S25
- Alternative Part Number: CA15431
Overview
The E-flite 500mAh 1S 3.7V 25C LiPo Battery (EFLB5001S25) is a compact, lightweight power solution specifically engineered for small-scale RC models and micro helicopters. This JST-equipped battery delivers reliable, consistent performance in a form factor designed for tight spaces and weight-sensitive applications. Whether you're flying a Blade SR 120 or operating other compatible micro RC aircraft, this battery provides the dependable power you need for extended flight sessions without the bulk of larger battery packs. For RC enthusiasts in the UK looking for a proven, affordable battery option for small RC helicopters and micro drones, the E-flite 500mAh 1S battery represents excellent value and genuine manufacturer quality that serious hobbyists trust.
E-flite is a recognised leader in small-scale RC products, and this 500mAh battery reflects their commitment to delivering quality components that work seamlessly with their aircraft designs. The slim 7.5mm profile makes this battery ideal for models with space constraints, whilst the 500mAh capacity provides sufficient runtime for recreational flying and practice sessions. If you're building a micro RC helicopter collection or need reliable spare batteries for your existing E-flite models, this battery is a smart investment that combines performance, durability and affordability.
Key Features
- 500mAh Capacity — This 500mAh capacity strikes the perfect balance between flight time and weight for micro RC helicopters and small aircraft, ensuring your model stays airborne long enough for meaningful flying sessions without excessive battery mass that would compromise performance and agility.
- 1S 3.7V Configuration — The single-cell (1S) design delivers a nominal voltage of 3.7 volts, the standard specification for small micro RC models, providing the exact power requirements these aircraft were designed for without the need for voltage step-down or conversion circuits.
- 25C Discharge Rating — With a maximum continuous discharge rate of 25C, this battery can deliver up to 12.5 amps of continuous current, providing sufficient power delivery for responsive control and energetic flight performance in small micro helicopters and UMX-scale aircraft.
- 12.5A Continuous Current — The 12.5-amp maximum continuous current output ensures this battery can handle the power demands of micro RC motors and flight control systems without voltage sag, maintaining stable performance throughout your flight envelope.
- JST Connector — Factory-fitted with a JST (Japan Solderless Terminal) connector, this battery offers tool-free connection and disconnection, making battery swaps quick and convenient whilst maintaining reliable electrical contact and preventing accidental disconnection during flight.
- Ultra-Compact Design — Measuring just 59.5mm in length, 19mm in width and only 7.5mm in height, this battery's slim profile fits into tight fuselage bays and battery compartments designed for micro-scale aircraft, where space is at a premium and weight distribution is critical.
- Lightweight Construction — At just 14.5 grams, this battery adds minimal weight to your RC model, preserving the flight characteristics and performance envelope of your micro helicopter or small aircraft whilst keeping your airframe within design weight specifications.
- Soft Case Protection — The battery comes protected in a soft case that guards against physical damage during storage and transport, helping extend the lifespan of your battery investment and maintaining safety standards for lithium polymer chemistry.
- Wide Model Compatibility — This battery is compatible with numerous E-flite Blade and UMX series models, making it an ideal spare battery choice for expanding your RC collection or ensuring you always have backup power for multiple aircraft.
Technical Performance
The E-flite 500mAh 1S 3.7V 25C LiPo Battery represents precision engineering tailored specifically for the demanding requirements of micro-scale RC helicopters and ultra-micro (UMX) fixed-wing aircraft. The lithium polymer (LiPo) chemistry delivers superior power density compared to older nickel-based batteries, allowing these compact batteries to provide the current and voltage stability required by brushless micro motors. At 1.9 watt-hours total energy capacity, this battery stores sufficient energy for multiple flight cycles on a single charge, with actual runtime varying based on throttle application and flying style. The 25C continuous discharge rating is specifically matched to the operational parameters of micro RC motors and ESCs, ensuring the battery can deliver power without thermal stress or voltage collapse. The 7.5mm height is deliberately engineered to fit within the minimal fuselage depths of micro helicopters like the Blade SR 120, where battery installation space is measured in millimetres. The JST connector standard ensures compatibility with E-flite's micro aircraft whilst providing a robust, soldier-free connection mechanism that maintains electrical integrity throughout countless battery cycles. Build quality is guaranteed by E-flite's manufacturing standards, with proper cell balancing and quality control processes that ensure longevity and safe operation with lithium polymer chemistry.
What's in the Box
- 1x E-flite 500mAh 1S 3.7V 25C LiPo Battery with JST connector
Frequently Asked Questions
- Is the E-flite 500mAh 1S battery suitable for beginners and recreational RC flyers? — Yes, absolutely. This battery is ideal for beginners and casual RC pilots because it eliminates the complexity of multiple battery configurations. The 1S design is the simplest lithium polymer setup available, and the 500mAh capacity is perfectly matched to micro helicopters and small aircraft where charging and flight time expectations align with recreational flying patterns. The JST connector means zero soldering required, making battery management completely straightforward for new hobbyists discovering RC flight for the first time.
- What RC models is the EFLB5001S25 compatible with? — This battery is compatible with E-flite Blade SR 120 helicopters and numerous other micro-scale E-flite and Blade models. The battery's compact dimensions and JST connector make it suitable for any micro RC aircraft or helicopter designed for 1S 3.7V power. Specific compatible models include the Blade SR 120, and it can also work with other UMX-series aircraft and micro helicopters from E-flite's product range. Always verify your specific model's battery specification before purchasing to ensure compatibility with your aircraft's battery bay dimensions and connector type.
- How long does a 500mAh 1S battery provide flight time? — Flight time depends on several factors including your aircraft's weight, motor efficiency, throttle application, and ambient temperature, but typical flight sessions with a 500mAh battery in micro helicopters range from 5 to 8 minutes of continuous flying. Most pilots use multiple batteries to extend their total session time, as charging time often exceeds flight time. Conservative flying with lower throttle settings can extend runtime, whilst aggressive flight manoeuvres will naturally reduce battery endurance as the motor draws more current.
- Do I need a special charger for this 1S LiPo battery? — You'll need a dedicated LiPo charger capable of charging 1S batteries. E-flite and other manufacturers produce affordable 1S-compatible chargers designed specifically for micro battery packs. A suitable charger like the EFLC1014 is recommended by retailers stocking this battery. Never attempt to charge lithium polymer batteries with standard nickel-cadmium or nickel-metal hydride chargers, as LiPo chemistry requires current-limiting, balance-charging capable equipment for safe operation.
- What is the difference between 25C and higher C-rating batteries? — The C-rating (25C in this case) indicates the maximum safe continuous discharge rate expressed as a multiple of the battery's capacity. A 25C rating on a 500mAh battery means maximum continuous discharge of 12.5 amps (500mAh × 25 = 12,500mA = 12.5A). Higher C-ratings allow greater current draw and are typically used in performance-oriented racing applications, whilst 25C is perfectly adequate for recreational flying and micro helicopters where motors draw lower continuous currents. The 25C rating is specifically matched to typical micro motor power demands.
- How should I store this LiPo battery safely? — Store your 500mAh LiPo battery in a cool, dry location away from direct sunlight and heat sources. Ideally, maintain a storage charge of approximately 50% capacity (3.7V for a 1S battery) rather than storing fully charged or completely discharged. Use a fireproof LiPo storage bag for added safety, especially if storing multiple batteries. Never leave charged batteries unattended during charging, and always follow the manufacturer's safety guidelines for lithium polymer battery handling and storage.
- Is this battery waterproof or weather-resistant? — The 500mAh battery itself is not waterproof or weather-resistant in the waterproof rating sense. The soft case provides physical protection from minor impacts and dust, but the battery should not be exposed to water, moisture, or extreme weather conditions. If your RC model will be operated in wet conditions, ensure the battery compartment provides adequate sealing, and always dry the battery thoroughly after any unintended water exposure before recharging.
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 E-flite 500mAh 1S 3.7V 25C LiPo Battery 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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