- Brand: Blade (Horizon Hobby)
- Model Number: BLH4210
- Battery Type: LiPo (Lithium Polymer)
- Cell Configuration: 1S1P (1 cell, 1 pack)
- Nominal Voltage: 3.7V
- Capacity: 150mAh
- Continuous Discharge Rate: 45C
- Maximum Continuous Discharge Current: 6.75A (150mAh × 45C)
- Connector Type: PH 1.25 Ultra Micro
- Charge Protection Circuitry: No
- Length: 42mm (1.65 inches)
- Width: 12mm (0.47 inches)
- Height: 5mm (0.2 inches)
- Weight: 5g (0.18 oz)
- Recommended Charge Rate: 1C (150mA maximum)
- Application: Blade 70S and compatible ultra-micro RC aircraft
- Storage Voltage: 3.8V per cell
Overview
The Blade 150mAh 1S 3.7V 45C LiPo Battery with PH 1.25 Ultra Micro connector is a compact, high-performance power solution engineered specifically for ultra-micro RC aircraft and models that demand lightweight, dependable energy delivery. This specialist battery pack is designed for the Blade 70S and other ultra-micro RC platforms where every gram counts and consistent power output is essential. Whether you're flying in the UK or abroad, this LiPo battery offers the perfect balance of capacity, discharge rate and physical footprint for serious RC enthusiasts who demand professional-grade performance from their ultra-micro models.
Ultra-micro RC flying has become increasingly popular amongst RC hobbyists in the UK, and having the right battery is absolutely crucial to achieving optimal flight performance. This Blade battery is specifically calibrated to meet the exacting demands of ultra-micro aircraft, delivering reliable power without adding unnecessary weight to your model. The 1S (single-cell) configuration at 3.7V nominal voltage is the industry standard for lightweight micro flying machines, and this pack's 150mAh capacity provides sufficient runtime for enjoyable flying sessions. The 45C continuous discharge rating ensures that the battery can supply the sustained current your motor demands during aggressive manoeuvres and high-speed flight.
As an authorised UK RC retailer, RC Model Shop stocks genuine Blade batteries and works exclusively with trusted manufacturers to ensure you receive authentic products backed by proper warranty and support. Whether you're a beginner discovering ultra-micro flying or an experienced competitor looking for consistent, reliable power, this Blade 150mAh battery delivers the performance you need at a competitive price point.
Key Features
- 1S Cell Configuration — The single-cell design provides 3.7V nominal voltage, which is the standard specification for ultra-micro RC aircraft and ensures compatibility with purpose-built micro ESCs and motors designed for this voltage class.
- 150mAh Capacity — This capacity is optimised for ultra-micro models where weight is absolutely critical, allowing your aircraft to remain as light as possible whilst still providing adequate runtime for meaningful flying sessions.
- 45C Continuous Discharge Rate — The 45C rating means this battery can safely deliver up to 6.75 amps of continuous current (150mAh × 45C), providing more than adequate power for the high-RPM micro motors typically found in ultra-micro aircraft.
- PH 1.25 Ultra Micro Connector — Also referred to as PH 1.5 Ultra Micro connector, this tiny connection system is specifically designed for ultra-micro applications where space and weight constraints are paramount, ensuring secure connections without the bulk of larger connectors.
- Compact Physical Dimensions — Measuring just 42mm in length, 12mm in width and 5mm in height with a total weight of only 5 grams, this battery is engineered to integrate seamlessly into ultra-micro fuselages without disrupting weight distribution or performance characteristics.
- Genuine Blade Product — Manufactured by Horizon Hobby, a globally recognised authority in RC products, this battery is built to the same standards as all authentic Blade components and is fully compatible with Blade 70S and other designated ultra-micro models.
Technical Performance
This Blade LiPo battery represents professional-grade engineering optimised specifically for the unique demands of ultra-micro RC aircraft. The 1S 3.7V lithium polymer chemistry delivers consistent voltage output throughout the discharge cycle, maintaining stable power delivery even as the battery depletes. The 45C continuous discharge rating is more than sufficient for the micro brushless motors and high-efficiency propeller combinations typical in ultra-micro flying, where efficiency rather than raw power defines performance. At just 5 grams, the battery contributes minimal weight to your aircraft, which is critical for achieving the light loading that enables ultra-micro planes to fly with maximum control response and manoeuvrability. The PH 1.25 connector is industry-standard for this class of equipment, offering secure connections that prevent mid-flight disconnections whilst maintaining the minimal footprint necessary in cramped cockpit spaces. The compact 42 x 12 x 5mm form factor allows the battery to be positioned for optimal weight distribution within your airframe, directly contributing to superior flight characteristics. For UK RC enthusiasts operating ultra-micro models, this battery delivers the performance reliability you need for consistent, enjoyable flying across all seasons and weather conditions.
What's in the Box
- 1x Blade 150mAh 1S 3.7V 45C LiPo Battery with PH 1.25 Ultra Micro connector
What You Need to Complete
- 1S LiPo-compatible balance charger (not included) — essential for safe charging and cell balancing
- Battery storage bag or fire-resistant container for safe storage between use
- Compatible RC aircraft model with 1S LiPo battery compartment and matching PH 1.25 connector
Frequently Asked Questions
- Is this battery suitable for my Blade 70S helicopter? — Yes, this Blade 150mAh 1S 3.7V 45C battery is specifically designed for the Blade 70S and other Blade ultra-micro platforms, offering the correct voltage, capacity and connector type required for optimal performance.
- What does 45C discharge rating mean and why does it matter? — The 45C rating indicates this battery can safely deliver up to 6.75 amps of continuous current. This ensures your micro motor receives sufficient power for aggressive flying without the battery becoming damaged or overheating, making it perfect for sport flying and aerobatic manoeuvres.
- How long will this battery power my ultra-micro RC plane? — Runtime depends on your specific motor and flying style, but as a general rule, expect 8-15 minutes of continuous flight time, with sport flying reducing this to 6-10 minutes due to higher current draw.
- What charger should I use for this 1S battery? — Any LiPo-compatible balance charger rated for 1S packs will work. Charging at the 1C rate (150mA) is recommended for maximum battery longevity, though 2C charging is acceptable if time is limited. Never exceed 1A charge current.
- Can I use this battery in other ultra-micro models besides the Blade 70S? — Yes, this battery will work in any ultra-micro RC aircraft or model equipped with a matching PH 1.25 connector and 1S LiPo compatibility. Always verify connector type before purchasing.
- How should I store this battery between flying sessions? — LiPo batteries should be stored at storage voltage (approximately 3.8V per cell) in a fire-resistant bag or container in a cool, dry location. Never store at full charge or fully depleted.
- Is this suitable for beginners? — Yes, this battery is ideal for beginners flying ultra-micro models like the Blade 70S, as it offers reliable power and straightforward use. However, you must follow proper LiPo safety procedures including appropriate charging and storage.
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 BLH 150mAh 1S 3.7V 45C LiPo Battery: PH 1.25 (Ultra Micro) Z-BLH4210 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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