HelloRadioSky 2S 7.4V 5000mAh Li-ion Transmitter Battery
Power through marathon flying sessions and bench setups with the HelloRadioSky 2S 7.4V 5000mAh Li-ion Transmitter Battery. Designed specifically for modern full-size and mid-size EdgeTX radios—including the HelloRadioSky V16, V15, and V14 series—this high-density cell pack delivers long-lasting power without the voltage sag or maintenance hassle of traditional LiPo batteries. Fitted with a robust XT30 output plug and a standard JST-XH balance connector, it offers clean, direct power for high-output external TX modules and fast in-radio charging via USB-C.
$24.99
Keep your radio powered all day without cutting bench-tuning or field sessions short. The HelloRadioSky 2S 7.4V 5000mAh Li-ion Battery Pack provides maximum energy density in a compact form factor tailored to drop cleanly into transmitter battery compartments.
Built using high-capacity 21700 lithium-ion cells, this 37Wh power pack offers substantially longer operating times compared to standard 18650 trays or traditional LiPo options. Li-ion chemistry provides a steady, reliable voltage discharge curve, high cycle life, and low self-discharge—ensuring your transmitter is charged and ready to go whenever you hit the field.
Equipped with an XT30 main output plug, this pack is ideal for supplying clean, high-current power directly to high-wattage external modules (such as long-range ELRS or Crossfire transmitters). The included JST-XH 2S balance lead ensures seamless plug-and-play compatibility with your radio’s internal USB-C charging circuit or standard external balance chargers.
Key Highlights & Features
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High Capacity 5000mAh: Delivers extended flight and bench time for full-day sessions.
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High-Density 21700 Chemistry: Packs maximum energy into a standard transmitter battery bay footprint.
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Dual Connector Setup: Heavy-duty XT30 plug for main power/external modules alongside a standard JST-XH balance lead.
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Broad Transmitter Compatibility: Designed directly for the HelloRadioSky lineup (V16, V15, and V14 series) and compatible with other radios featuring 2S 21700 battery compartments (such as RadioMaster TX16S and Boxer).
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Low Self-Discharge & Long Cycle Life: Safer, lower-maintenance chemistry compared to LiPo batteries.
Technical Specifications
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Brand: HelloRadioSky
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Battery Type: 2S Lithium-Ion (2S1P 21700 cell layout)
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Nominal Voltage: 7.4V
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Fully Charged Voltage: 8.4V
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Capacity: 5000mAh (37Wh)
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Main Power Plug: XT30
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Balance Connector: JST-XH (3-Pin)
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Approximate Dimensions: 71.5mm x 43.5mm x 23.5mm
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Approximate Weight: ~155g
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Compatibility: HelloRadioSky V16, V15, and V14 radio transmitters (and standard 2S 21700 battery bays)
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