21.6V 3000mAh 6S1P 18650 Battery Pack with UN38.3 Certification
Engineered for high performance and reliability, our 21.6V 3000mAh battery pack combines reliable Samsung 30Q cells with a precision-engineered BMS to deliver stable power and extended cycle life. UN38.3 certified and built using rigorously tested materials and advanced craftsmanship, this pack reflects CM Batteries’ commitment to quality honed through years of specialized battery solutions. Ideal for a wide range of mid-power applications, it offers both safety and endurance in a compact, ready-to-deploy format.
Key features：
- Configuration :6S1P configuration using genuine Samsung 30Q cells
- Equipped with a DC charging connector and red/black discharge wires.
- Compact dimension of max 20*74.5*110.5 mm.
- Integrated protection against over-charge, over-discharge (cut-off: 18V), short circuit, and temperature extremes.
- Supports continuous 10A discharge via integrated BMS.
- UN38.3 approved for global transport.
- Stable power delivery to offer uninterrupted operation of smart automation systems
| No. | Item | Parameter | Remark |
|---|---|---|---|
| 1 | Nominal Voltage | 21.6V | 3.6V/Cell |
| 2 | Nominal Capacity | 3Ah | @0.2C |
| 3 | Minimum Capacity | 2.9Ah | / |
| 4 | Shipment Voltage | / | / |
| 5 | Initial Internal Impedance | ≤150mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 25.2V | 4.2V/Cell |
| 7 | Standard Charge Current | 0.6A | @0.2C |
| 8 | Max. Charge Current | 1.5A | |
| 9 | Standard Discharge Current | 0.6A | |
| 10 | Max. Discharge Current | 10A | / |
| 11 | Burst Discharge Current | 30±10A | ≤50ms |
| 12 | Discharge Cut-off Voltage | 16.2V | 2.7V/Cell |
| 13 | Cycle Life | ≥250cycles | Retention: ≥70% |
| 14 | Charge Temperature | 0°C~50°C | Standard Charge |
| 15 | Discharge Temperature | -20°C~65°C | Standard Discharge |
| 16 | Storage Temperature | -20°C~45°C | ≤3 Months |
| -20°C~25°C | ≤1 Year | ||
| 17 | Weight | About 0.33kg | / |
| 18 | Special Request | / | / |
21.6V 3000mAh 6S1P 18650 Battery Pack FAQs
What does "6S1P" mean?
It means 6 cells are connected in Series to achieve 21.6V, and 1 cell in Parallel, giving the 3000mAh capacity. This is a compact and robust configuration.
What is the low-voltage cut-off, and why is it important?
The BMS automatically cuts off power when the pack voltage drops to approximately 18V. This prevents over-discharge, which is a critical protection for lithium-ion cells, as it helps to preserve battery health and significantly extend its overall cycle life.
Is this battery pack certified for safe shipping?
Yes, this battery pack is certified in accordance with UN38.3. This mandatory standard ensures the pack has passed a series of safety tests and is safe for international air and transport.
What connector type does it use, and what is the wire gauge?
The pack comes assembled with a standard DC plug for charging. For discharge, it features a pair of red (positive) and black (negative) wires. Please contact our support team for specific information on the connector model and wire gauge to assist with your integration process.
How should I charge this battery pack?
You must use a dedicated lithium-ion/polymer balance charger designed for 6S (25.2V) battery packs. Using an incorrect charger is dangerous and may damage the battery and void the warranty. Never charge the pack unattended.
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