Quick Fit Check
The 3 Packs CNHL MiniStar 300mAh 7.4V 2S 30C LiPo Battery with MINI JST Plug set is designed for very small RC models where battery dimensions and installed weight are critical.
Each battery measures only 44 × 19 × 15mm (L × W × H) and weighs approximately 22g including the wire and connector. This makes the pack especially relevant to 1/24-scale RC cars, micro aircraft and other lightweight 2S platforms where a conventional 450–650mAh battery would be unnecessarily large or heavy.
This product includes three separate 300mAh 2S batteries. Each battery remains 300mAh and 7.4V when used individually; the package should not be interpreted as one 900mAh battery or a 6S battery.
| Check Item |
Your Model Should Match |
Each Battery |
| Cell Count |
Standard 2S LiPo system |
7.4V nominal / 2S1P |
| Maximum Voltage |
Electronics support fully charged standard 2S LiPo voltage |
8.40V fully charged |
| Battery Space |
Tray or bay accepts an ultra-compact pack |
44 × 19 × 15mm |
| Installed Weight |
Model can operate correctly with the battery |
Approx. 22g |
| Connector |
Matching MINI JST connection and polarity |
MINI JST |
| Power Demand |
Battery output suits the motor and ESC load |
30C continuous / 60C burst |
Product Specifications
| Capacity |
300mAh per Battery |
| Nominal Voltage |
7.4V |
| Cell Configuration |
2S |
| Nominal Energy |
2.22Wh per Battery |
| Fully Charged Voltage |
8.40V / 4.20V per Cell |
| Discharge Rate |
30C Continuous / 60C Burst |
| Maximum Charge Rate |
5C |
| Output Connector |
JST |
| Balance Connector |
JST / XH |
| Dimensions (L × W × H) |
44 × 19 × 15mm per Battery |
| Approx. Weight |
22g per Battery, Including Wire and Connector |
| Stock Number |
35302G |
| Package Quantity |
3 Batteries |
Only 22g: Ultra-Compact 300mAh 2S Power
The defining feature of the CNHL MiniStar 300mAh 2S LiPo is not maximum capacity—it is its extremely small size and low installed mass.
At approximately 22g and only 44mm long, the battery is intended for models where even an additional 10–20g can noticeably affect handling, chassis balance or flight characteristics.
The 300mAh capacity provides enough stored energy for appropriately sized micro models while avoiding the size and mass of larger 450mAh, 650mAh or 850mAh batteries.
Why Choose This 3-Pack?
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Only 22g per battery: Particularly useful for weight-sensitive micro RC models.
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44mm compact length: Fits battery spaces too small for many conventional 2S packs.
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300mAh capacity: Appropriate for ultra-light platforms rather than unnecessarily oversizing the battery.
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30C continuous output: Suitable for compatible low-to-moderate-current micro power systems.
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MINI JST connector: Designed for compact RC installations using the matching connector.
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Three independent packs: Keep multiple batteries ready without increasing the weight carried during each run.
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Standard LiPo chemistry: Charges to 8.40V and does not require LiHV mode.
Confirmed 2S Battery Fit for the HPI Stage D24
The CNHL MiniStar 300mAh 7.4V 2S LiPo is a confirmed fit for the HPI Stage D24 1/24 RWD drift car.
Its approximately 44 × 19 × 15mm dimensions and 22g weight are particularly well suited to the Stage D24's compact battery installation. In a 1/24-scale chassis, avoiding unnecessary battery mass helps preserve the balance and response of the car rather than overwhelming it with a much larger pack.
The 30C discharge rating also provides appropriate stated output for the Stage D24's factory brushed power system without requiring the size and current capability of a larger racing battery.
The 3-pack format is especially useful for indoor drift practice. One battery can be installed while additional charged packs remain ready for repeated runs, gyro adjustment, steering setup and driving practice.
For more fitment information and battery options, see the HPI Stage D24 Battery Collection.
300mAh 2S Battery for Micro and UMX-Class RC Aircraft
The extremely low 22g battery weight also makes this pack relevant to compatible micro RC airplanes and UMX-class aircraft designed around small 2S batteries.
For an airplane this small, battery weight has a direct effect on center of gravity, wing loading, stall behavior and landing energy. Installing a larger battery simply to gain capacity can make the aircraft noticeably less enjoyable to fly.
A 300mAh pack therefore makes the most sense when the aircraft is designed around approximately this capacity and can physically accommodate the 44 × 19 × 15mm pack with the correct MINI JST connector.
Battery Option for the Eflite UMX Eratix 3D FF 450mm
The 300mAh 2S battery class is particularly relevant to ultra-light aerobatic aircraft such as the Eflite UMX Eratix 3D FF 450mm, where battery weight has an unusually strong influence on low-speed 3D performance.
A lightweight battery can help preserve the low wing loading and responsive character that make a small flat-foam 3D aircraft suitable for hovering, harriers and tight indoor or outdoor maneuvering.
However, model versions and battery connectors should be checked before ordering. Do not assume that every battery described as 300mAh 2S uses the same plug.
See our Eflite UMX Eratix 3D FF 450mm battery and setup guide for more model-specific information.
2S Battery Option for the Eflite UMX Gee Bee R-2
This compact CNHL pack may also be considered for compatible Eflite UMX Gee Bee R-2 setups using 2S power.
At only 22g, the battery favors a lightweight setup rather than maximizing capacity. This can be attractive in a small scale aircraft where excessive battery weight can affect CG, approach speed and landing behavior.
Because different versions and user-modified aircraft may use different power connectors, confirm the actual connector, battery compartment and recommended capacity before installation.
Compare suitable 2S and 3S options in the Eflite UMX Gee Bee R-2 Battery Collection.
300mAh vs. 450mAh 2S Battery
| Priority |
300mAh 2S |
450mAh 2S |
| Rated Capacity |
300mAh |
450mAh |
| CNHL Listed Weight |
Approx. 22g |
Approx. 35g for the MiniStar 450mAh XT30U pack |
| Capacity Difference |
Lower |
50% more rated capacity |
| Main Priority |
Minimum battery mass |
Additional energy reserve |
| Best Direction |
1/24 cars and ultra-light aircraft |
Larger micro aircraft that can carry the extra weight |
A 450mAh battery has 50% more rated capacity than a 300mAh pack, but that does not automatically make it the better choice. In very small models, the additional battery mass can be more important than the extra stored energy.
Is This a Replacement for a Spektrum 300mAh 2S Battery?
This CNHL battery may appear in searches for a Spektrum 300mAh 2S battery because the capacity and voltage class are similar, but capacity and cell count alone do not establish replacement compatibility.
Before using it instead of a Spektrum or other OEM battery, compare the 44 × 19 × 15mm dimensions, approximately 22g weight, MINI JST output connector, connector polarity and recommended discharge capability.
Do not assume direct plug-in compatibility unless the physical connector and wiring match the specific model.
FMS Beaver 800mm Battery Note
If you reached this product while searching for an FMS Beaver 800mm battery, this 300mAh pack should generally not be treated as the normal main flight-battery choice for an 800mm-class bush plane.
The 300mAh capacity is aimed at significantly smaller micro RC applications. For the Beaver, select a battery according to the aircraft's intended capacity, dimensions, connector and CG requirements rather than choosing this pack simply because it is 2S.
See appropriately sized options in the FMS Beaver 800mm Battery Collection.
MINI JST Connector Compatibility
This battery uses a MINI JST output connector.
The term “JST” covers several different connector families and sizes, so two batteries both described as having a JST connector are not automatically physically compatible.
Before connecting this battery, compare the actual plug shape, connector gender, polarity and wire arrangement with the device-side connector on your model.
Do not force the connector if the housings do not match.
Standard 2S LiPo Charging
This is a standard 2S LiPo battery. Maximum balanced charge voltage is 4.20V per cell, or 8.40V total.
Do not use a 4.35V-per-cell LiHV charging mode with this battery.
For routine charging, a balanced 1C rate is preferred. 5C is the stated maximum, not the everyday target.
FAQ
How many batteries are included?
The package contains three separate CNHL MiniStar 300mAh 7.4V 2S batteries.
Does three 300mAh batteries mean this is a 900mAh battery?
No. Each battery remains independently rated at 300mAh. As supplied and used individually, the three-pack does not become one 900mAh battery.
Does this battery fit the HPI Stage D24?
Yes. The 44 × 19 × 15mm, approximately 22g CNHL 300mAh 2S pack is a confirmed fit for the HPI Stage D24 1/24 RWD drift car.
Is this suitable for UMX airplanes?
It may suit compatible micro and UMX-class airplanes designed around a small 2S battery, but UMX models do not all use the same connector or battery dimensions. Check the specific aircraft before ordering.
Can this battery be charged to 8.70V?
No. This is a standard 2S LiPo battery. Maximum balanced charge voltage is 8.40V total, or 4.20V per cell.
Is this a direct replacement for a Spektrum 300mAh 2S battery?
Not automatically. Compare dimensions, connector type, polarity, battery weight and model requirements before treating batteries with the same 300mAh 2S specification as interchangeable.
Should this battery always be charged at 5C?
No. For routine charging, a balanced 1C rate is preferred. The 5C specification is the stated maximum charge rate, not the everyday target.
Notice
- This product contains three independent 300mAh 2S batteries.
- This is a standard 2S LiPo battery with a maximum charge voltage of 4.20V per cell.
- Use a compatible LiPo balance charger and select the correct standard 2S LiPo setting.
- Do not charge these batteries using a 4.35V-per-cell LiHV mode.
- Confirm the 44 × 19 × 15mm dimensions, approximately 22g weight and MINI JST connector before use.
- The term JST can refer to different connector families; always confirm actual connector shape and polarity.
- Voltage and connector alone do not prove compatibility. Battery size, weight, current demand, retention and model balance must also match.
- Secure the battery firmly and keep the main and balance leads clear of gears, shafts, propellers and other moving parts.
- Never charge unattended, and do not use a swollen, punctured, damaged or overheated battery.
- Allow the battery to cool before recharging and use storage mode when it will not be used for an extended period.
