3.7V 400mAh LiPo Battery 30C YY702030 for Drones and DIY Projects
3.7V 30C 400mAh Lithium-Polymer Rechargeable Battery (YY702030) for Drones
The 3.7V 400mAh Lithium-Polymer (LiPo) battery YY702030 delivers 30C discharge for high-current applications like micro drones and RC models. This compact and lightweight rechargeable battery provides a nominal 3.7V with a 400mAh capacity, ideal for compact electronics projects where space and weight are critical.
Key Specifications
| Specification | Value |
|---|---|
| Model | YY702030 |
| Voltage | 3.7V nominal (4.2V full charge) |
| Capacity | 400mAh |
| Discharge Rate | 30C continuous (12A max) |
| Dimensions | 7 x 20 x 30 mm |
| Weight | 12g |
What You Can Build With This
- Micro FPV racing drone or Tiny Whoop clone
- DIY RC car or boat with 1S brushed motor
- Portable LED light panel or wearable
- IoT sensor node with long battery life (ESP32, nRF24)
Compatibility
This battery fits most 1S micro drones with JST connectors, including Tiny Whoop, Hubsan X4, Eachine E010, and custom builds using BetaFPV or similar flight controllers. It can power any 3.7V system drawing under 12A peak, such as brushed motors, small servos, or low-power microcontrollers with a regulator if needed.
Wiring Notes
The battery has a 2-pin JST connector – red is positive, black is negative. Polarity must be observed. Maximum continuous discharge is 12A; never exceed this rating. For drone use, connect directly to a power distribution board or flight controller that supports 1S input.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
This 3.7V LiPo battery can power Arduino boards via the Vin or 5V pin if you use a boost converter. It directly powers 3.3V systems like ESP32. Never connect directly to 5V logic pins.
What does the 30C rating mean?
30C indicates the continuous discharge current multiplier: 30 × 0.4Ah = 12A. This battery can safely deliver up to 12 amps without damage, suitable for high-drain drone motors.
How do I charge this battery safely?
Always use a dedicated 1S LiPo charger or a TP4056 module set to 4.2V. Do not exceed a charge current of 400mA (1C). Never leave charging unattended or overcharge.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items