RC ERA C138 7.4V 350mAh Smart Battery — OEM Power Pack (1/2/3 Pack)

Keep your C138 flying longer with this genuine 7.4V 350mAh (2S) Smart Battery. Factory-matched size, weight, and connector deliver steady power, correct CG, and reliable performance.

Key Features

• OEM 7.4V 350mAh (2S LiPo) tuned for the C138 power system

• Consistent output for stable hover and responsive throttle

• Exact-fit pack for the stock C138 battery bay—no rattles, proper balance

• Available in 1-Pack / 2-Pack / 3-Pack to match your flying schedule

Compatibility

Purpose-built for the C138 platform, fully compatible with:
👉 RC ERA C138 6CH RC Helicopter with Gyro & Optical-Flow Positioning (Red/Blue)

Not universal—use only with the C138 series.

Options & What’s in the Pack

• 1-Pack: 7.4V 350mAh Smart Battery ×1

• 2-Pack: 7.4V 350mAh Smart Battery ×2

• 3-Pack: 7.4V 350mAh Smart Battery ×3
  Charger/cables included only if shown in product photos; otherwise use a compatible 2S charger.

Charging & Care Tips

• Charge with a 2S LiPo-compatible charger; never charge unattended

• Let the pack cool to room temperature before recharging

• For storage >3 days, keep at 3.7–3.85V/Cell (≈ 7.4–7.7V total)

• Stop flying when power sags—avoid over-discharge to extend lifespan

• Keep contacts clean; avoid puncture, crush, heat, or water exposure

Install Notes

• Power OFF the heli before inserting/removing the battery

• Seat firmly in the tray; ensure the connector clicks fully

• Verify canopy clearance and wire routing before spool-up

More C138 Spare Parts

Need blades, gears, skids, motors, or linkages?
👉 Explore the collection: C138 Spare Parts Collection