CNHL MiniStar 350mAh 7.4V 2S 70C LiPo Battery with PH (UMX) Connector

Technical Specifications

• Stock Number: 35702P
• Capacity: 350mAh
• Voltage: 7.4V / 2S / 2-Cell (2S1P)
• Discharge Rate: 70C Continuous / 140C Burst
• Charge Rate: 5C Max
• Dimensions: 14 × 19 × 43 mm (±1–5 mm)
• Weight: Approx. 22g (±5g)
• Output Connector: PH (UMX)
• Balance Connector: N/A (integrated micro format)
• Wire Gauge: 22 AWG
• Package Includes: 1 × CNHL MiniStar 350mAh 2S 70C LiPo Battery

The CNHL MiniStar 350mAh 7.4V 2S 70C LiPo is a high-performance UMX battery designed for ultra micro aircraft and helicopters that require strong current delivery without added weight. Built as a performance-focused alternative to the Spektrum SPMX3002S30, it uses the same PH (UMX) high-current 3-pin connector, delivering improved throttle response and voltage stability in demanding flight conditions.

With a continuous 70C discharge rate and an aggressive 140C burst capability, this pack delivers crisp throttle response, reduced voltage sag, and consistent output during demanding aerobatic or collective maneuvers.

Designed for PH (UMX) High-Current Systems

This battery features the PH (UMX) connector, widely used on many legacy and current Eflite UMX airplanes and Blade micro helicopters. The 3-pin design integrates power delivery in a compact footprint while supporting higher current than standard micro JST-style plugs.

If your model originally ships with or specifies the Spektrum SPMX3002S30, this pack matches the electrical format and connector style while offering a higher discharge rating for more demanding flight profiles.

Lightweight Performance Without Compromise

Weighing approximately 22 grams, the MiniStar 350mAh keeps total flying weight low—critical for maintaining proper CG, fast response, and stable handling on ultra-micro airframes. The compact cell layout minimizes internal resistance while preserving energy density.

This makes it especially suitable for pilots flying indoors, in calm outdoor conditions, or performing high-energy 3D and collective-pitch maneuvers where voltage stability matters more than raw capacity.

UMX Battery Upgrade for Ultra Micro Aircraft and Helicopters

This 350mAh 2S LiPo is an ideal UMX battery upgrade for pilots looking for stronger throttle response and better voltage stability compared to standard 300mAh packs.

Compatible Models (PH / UMX Connector)

The CNHL MiniStar 350mAh 2S 70C LiPo Battery is compatible with a wide range of legacy and current UMX aircraft and Blade micro helicopters making it a proven UMX battery option that use the PH (UMX) high-current connector. It matches the voltage and connector format commonly specified for packs such as EFLB2002S30 and SPMX3002S30.

Common compatible models include:

• UMX Eratix 3D FF (Flat Foamy) 450mm
• UMX Gee Bee R-2 Old Version
• UMX MiG-15 28mm EDF Jet
• UMX Habu S
• UMX Timber
• UMX Waco BL
• Blade 130X
• Blade mCPX BL / mCPX BL2
• Blade InFusion 120

This battery is intended for models that specify a 2S (7.4V) LiPo with PH-type UMX connector. Always confirm connector type, polarity, and battery dimensions before use.

Usage & Charging Notes

• Ensure both voltage and connector type match your model before use.
• Charge to a maximum of 4.2V per cell (normal operating range: 3.7V–4.2V).
• Inspect the battery on arrival and verify voltage before first use.
• If initial performance feels inconsistent, perform several gentle charge/discharge cycles to stabilize the cells.

FAQ – UMX Battery & PH / UMX Connector

Q: Is this battery compatible with models that use Spektrum SPMX3002S30?
A: Yes. This battery is designed as a functional alternative to the Spektrum SPMX3002S30. It uses the same PH (UMX) high-current 3-pin connector and matches the required 2S (7.4V) electrical specification. Always confirm physical dimensions before use.

Q: What does “PH (UMX) connector” mean?
A: PH (UMX) refers to the high-current micro connector commonly used on many UMX aircraft and Blade micro helicopters. Although sometimes labeled differently (PH / UMX / micro 3-pin), it is electrically compatible with the connector used on packs like SPMX3002S30.

Q: Is this the same as a JST or JST-PH connector?
A: No. While the name can be confusing online, the PH (UMX) connector used here is not the same as standard red JST or JST-PH balance plugs. It is a dedicated high-current micro power connector designed for ultra-micro RC systems.

Q: Does this battery include a balance lead?
A: No. This battery uses an integrated micro format without a separate balance connector, which is standard for many UMX battery designs. It should be charged using a compatible charger designed for UMX / micro 2S packs.

Q: Is 70C too high for ultra-micro aircraft?
A: No. The 70C continuous (140C burst) rating does not force the model to draw more current—it simply allows the battery to supply current with less voltage sag when demanded. This results in more stable power delivery during aggressive maneuvers.

Q: Can this battery replace a 300mAh 2S UMX battery?
A: Yes. This 350mAh pack is commonly used as a UMX battery upgrade over 300mAh packs, offering slightly longer flight time while maintaining similar weight and balance characteristics.

CNHL LiPo batteries come with a 90-day warranty from the date of purchase, unless otherwise stated in the product listing.

This warranty covers original defects in materials and workmanship. It does not cover normal wear and tear, puffing, swelling, over-disacharge, over-charge, improper storage, crash or water damage, connector changes, or any damage resulting from misuse or mishandling.

If you find that a battery purchased from us is defective within the 90-day warranty period, please get in touch with us to arrange a return for inspection. Based on our evaluation, we will usually repair, replace, or offer an appropriate solution at no additional charge.

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