Shenzhen RYDBATT Electronics Co., Ltd. is one of the leading manufacturers and suppliers of 21700 drone battery pack 6s–14s uav oem in China. Welcome to buy CE approved batteries in stock here and get free sample from our factory. All customized products are with high quality and low price.
21700 Drone Battery Pack (Custom UAV Platform)
High-Drain, Low-Voltage-Sag Power Packs for Commercial & Industrial UAVs
The RYDBATT RYD-UAV-21700 platform turns high-drain 21700 cells into flight-ready power modules. We handle cell grading, nickel-strip welding, smart BMS integration, harness termination and serialized pack testing - so UAV integrators get a pack matched to their airframe instead of loose cells and a welding jig.
✓ 3S–14S ✓ 20–30A/cell class ✓ Low IR ✓ CAN/SMBus
✓ Flight-Safe BMS ✓ UN38.3
| Cell Format | 21700 cylindrical, NMC high-drain grade |
|---|---|
| Configurable Range | 3S1P – 14S8P (voltage 10.8V – 50.4V nominal) |
| Typical Builds | 6S1P / 6S2P / 12S2P / 14S4P |
| Cell-Level Discharge | High-drain tier, continuous + pulse rated |
| Pack Energy Example | 6S2P ≈ 173–216Wh; 12S2P ≈ 345–432Wh; 14S4P ≈ 800Wh+ |
| Internal Resistance | Low-IR cells, matched before assembly |
| BMS | Over/under-voltage, OCP, OTP, balancing, SOC/SOH |
| Telemetry | CAN bus / SMBus / UART (selectable) |
| Flight Logic | Early warning + current derate (limp mode), not hard cut-off |
| Connectors | XT30 / XT60 / XT90 / AS150 + balance lead |
| Enclosure | PC/ABS, carbon-composite or aluminum; IP54–IP67 option |
| Operating Temp. | Charge 0–45℃ / Discharge -20–60℃ (low-temp strategy optional) |
| Cycle Life | ≥500 cycles to 80% (1C/1C, 25℃) |
| Compliance | UN38.3 / MSDS baseline; CE/RoHS/IEC docs per project |
| Supply Model | Neutral / white-label / private-label OEM & ODM |
Why 21700 for UAV Platforms
Energy Density
Higher Wh/kg than equivalent LiPo for long-endurance missions.
Stable Under Load
Tuned P-rating keeps voltage sag low during climb-outs and heavy payload.
Safer Than Soft-Pack
Steel-can structure, lower puffing risk in industrial use.
Cycle Economy
Longer service life than high-C LiPo in steady-cruise commercial fleets.
Reference Configurations
| Configuration | Voltage | Typical Capacity | Energy | Best For |
|---|---|---|---|---|
| 6S1P | ≈21.6V | 4–5Ah | 86–108Wh | Compact FPV, light commercial |
| 6S2P | ≈21.6V | 8–10Ah | 173–216Wh | Mapping, inspection, cinematic |
| 12S2P | ≈43.2V | 8–10Ah | 345–432Wh | Agricultural spray, heavy-lift |
| 14S4P | ≈50.4V | 16–20Ah | 800Wh+ | Industrial UAV, logistics delivery |
Flight-Safe BMS Design
Soft Limp Mode
Undervoltage triggers derate + warning, not instant power cut (crash-safe).
Per-group Monitoring
Cell voltage, temperature, current and SOC over CAN/SMBus.
Thermal Strategy
Charge/disc derate, OTP cutoff, optional low-temp self-heat.
Anti-Spark
AS150/XT90-S with pre-charge resistor option for high-voltage packs.
Target UAV Applications
🌾
Agricultural Spraying
🗺️
Mapping & Survey (RTK)
🔎
Power Line & Infrastructure Inspection
📦
Logistics & Delivery
🎥
Cinematic & Long-Range FPV
🛰️
VTOL / Fixed-Wing Endurance
OEM / ODM Customisation
Electrical
S/P count, capacity, continuous/peak current, C-rating headroom.
BMS
Protection thresholds, CAN DBC, SMBus, telemetry fields.
Mechanical
Enclosure, mounting, weight budget, IP rating.
Connectors
XT/AS150/EC5, balance lead, aviation plug.
Environment
Low-temp cell, self-heating, high-altitude venting.
Branding
Neutral, white-label or private-label pack.
✅ 20+ Years lithium system integration since 2005.
✅ Cell-to-Pack - grading, welding, BMS, testing in-house.
✅ Flight Logic - derate-first BMS, not storage-style hard cutoff.
✅ Export Ready - UN38.3/MSDS, DG freight documentation.
✅ Confidential - NDA before cell tier / BMS register exchange.
✅ Scale - samples to volume production.
QC & Traceability
01
Cell Grading
Capacity, IR and voltage matched per parallel group.
02
Weld Check
Nickel/copper busbar pull-strength verification.
03
Pack Test
Full charge/discharge, balance, thermal scan.
04
Traceability
Batch + serial map back to cell lot and BMS config.
Our Certificate
ISO9001
ISO9001
ISO9001
FAQ
Q: 21700 or LiPo for my drone?
A: If your mission is steady cruise, mapping or long endurance, 21700 Li-ion wins on energy density and cycle life. For aggressive 20C+ burst (racing/FVP freestyle), LiPo may fit better - we help you choose by load profile.
Q: Will the BMS cut power mid-flight?
A: No hard cut by default. Our UAV BMS warns and derates current on undervoltage/over-temp, giving the pilot a limp-home window.
Q: What telemetry do I get?
A: CAN bus or SMBus: cell voltage groups, pack current, temperature, SOC, fault codes. DBC/register map provided.
Q: Can you match my ESC voltage?
A: Yes - 6S/12S/14S built to your motor/ESC input. Send hover + peak current and we size P-count for sag margin.
Q: What certifications are provided?
A: UN38.3 and MSDS baseline. CE/RoHS/IEC documentation prepared per project and destination market.
Hot Tags: 21700 drone battery pack 6s–14s uav oem, China 21700 drone battery pack 6s–14s uav oem manufacturers, suppliers, factory
