Shenzhen Blumoti Energy Co., Ltd. is a leading Chinese manufacturer and supplier of 5000mah 21700 battery. If you are looking to source durable, bulk 5000mah 21700 battery from China, feel free to contact our factory for details. Custom orders are welcome.
Lithium-ion 21700 battery manufacture |3.7V rechargeable 21700 |3C discharge rate cell
A 21700 cylindrical cell capable of 3C discharge can deliver a maximum capacity of 5000 mAh, supporting a continuous 15 A discharge current. This combination of high energy density and moderate power capability makes it one of the most widely used formats in the 21700 cell category, with broad applications across multiple fields.
5000mAh 21700 battery – General Specifications
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Cathode material: NCM.
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Nominal Voltage: 3.6V/3.7V
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Charging Voltage: 4.2V
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Discharge Cut-off Voltage: 2.75V
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Nominal Capacity: 5000mAh (0.2C discharge)
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Discharge Rate: 0.2C–3C
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Charging current: standard 2.5A /Maximum 5A
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Cycle life:≥ 800 cycles
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Resistance: ≤18mΩ
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Weight : 70±2g
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Protection Circuit: PCB/PCM, including overcharge, over-discharge, overcurrent, and short-circuit protection
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Operating Temperature: 0–45°C (charging); -20–60°C (discharging)
5000mAh 21700 Lithium Ion Battery Features
High power output (3C discharge capability): Supports up to 15A continuous discharge while maintaining stable performance, suitable for high-drain applications.
Large capacity (5000mAh high energy density): Balances long runtime with compact 21700 form factor, extending device operating time.
Widely compatible 21700 format: Standard cylindrical design with strong versatility, widely used in power tools, e-bikes, and energy storage systems.
Cycle Life (Ultra-Long Lifespan)
Delivers over 800 charge–discharge cycles with ≥80% capacity retention
Customizable
Series/parallel configurations, wiring harnesses, connectors, and protection PCB/BMS can all be tailored
Applications of 3.7V 5000mAh 21700 Lithium Battery
Power tools (drills, screwdrivers, light-duty grinders)
- Typical configuration: 10S–13S (36V / 48V systems)
- Pack capacity: 5–10Ah (1P–2P for balance between runtime and weight)
- Discharge current: ~10–15A per cell (3C rated, used in moderate-load tools, not heavy industrial continuous cutting tools)
E-bikes / light electric scooters (mainstream mobility use case)
- Typical configuration: 10S–13S (36V / 48V / 52V systems)
- Pack capacity: 10–20Ah (2P–4P using 5000mAh cells)
- Discharge current: ~10–30A system continuous (cell-level 3C supports acceleration and hill climbing peaks)
Portable energy storage systems (power stations, camping batteries)
- Typical configuration: 4S–14S (12V / 24V / 48V platforms)
- Pack capacity: 10–50Ah+ modular expansion
- Discharge current: ~5–20A per cell equivalent (optimized for inverter loads, not high surge motors)
Consumer-grade battery packs (lawn equipment, garden tools, cordless home devices)
- Typical configuration: 5S–13S depending on tool platform
- Pack capacity: 5–15Ah
Flashlights (high-performance LED torches)
Discharge current: ~10–15A per cell (stable discharge for intermittent motor load, not continuous high torque industrial use)
- 1S–2S configuration (3.7V / 7.4V systems)
- 5–20Ah packs (single cell or parallel cells)
- ~3–15A discharge depending on brightness mode (turbo/low split usage)
Optional plugs available：
FAQ
Q1: 3C is used for what applications?
A: Mainstream use in e-bikes, power tools, and portable energy storage (light–medium load).
Q2: Is 5000mAh real in high load?
A: Yes in design rating, but under 3C discharge expect slight capacity drop due to voltage sag.
Q3: Can it be used in battery packs?
A: Yes, commonly in 2P–6P configurations, scaling current by parallel count (≈15A per cell).
Q4: What is the main buyer concern?
A: True capacity consistency and stable discharge performance at 3C load.
Q5: Why choose 5000mAh 3C instead of higher C-rate cells?
A: Prioritizes long runtime and energy density, not high burst power (vs 5C/10C cells).
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