INR21700-5500 5500mAh 21700 Battery – 10A Fast Charge, 30A Discharge for E-Bikes, Power Tools & ESS

If you are sourcing a high-capacity 21700 5500mAh battery for battery packs, e-mobility, power tools, or energy storage, the INR21700-5500 is a strong option for your next project. We have large stock available and offer competitive wholesale pricing for bulk orders.

This article covers the key specifications, discharge performance, applications, and supply advantages of the SunPower INR21700-5500 (55P) cell, based on the A002 specification. Contact us today for the latest wholesale price and stock availability.

Why Buyers Choose the INR21700-5500 5500mAh Cell

The INR21700-5500 is a cylindrical lithium-ion rechargeable cell designed for buyers who need high capacity, high discharge capability, and consistent quality. It delivers:

• 5500mAh nominal capacity

• 3.60V nominal voltage

• 10A maximum charge current

• 16.5A maximum continuous discharge current without temperature cut

• 30A continuous discharge with 75°C temperature cut-off

• 70A pulse discharge current for 2 seconds

• ≤15.0mΩ AC impedance at 1000Hz, 30% SOC

• ≤75g weight

• 21.25±0.15mm diameter and 70.30±0.20mm height including PET

For battery pack integrators, this means more energy per cell, strong power output, and reliable performance across demanding applications.

Key Specifications of INR21700-5500

Discharge Performance You Can Design Around

The INR21700-5500 performs well under different discharge rates. Based on the A002 specification, the relative capacity at 25±3°C is measured against a 0.2C discharge capacity of 5400mAh.

Temperature also affects capacity. At 0.2C discharge after standard charge at 25±3°C:

For cycle life, the INR21700-5500 offers solid durability:

• 500 cycles: 2.75A charge / 5.5A discharge, capacity ≥80%

• 300 cycles: 5.5A charge / 11A discharge, capacity ≥80%

• 300 cycles: 5.5A charge / 16.5A discharge, capacity ≥60%

• 200 cycles: 5.5A charge / 20A discharge with 75°C cut, capacity ≥60%

Applications for 5500mAh 21700 Battery

The INR21700-5500 is suitable for a wide range of high-capacity and high-discharge applications, including:

• E-bikes and e-scooters

• Light electric vehicles (LEV)

• Power tools

• Energy storage systems (ESS)

• UPS and backup power

• Portable power stations

• Robotics and AGVs

• Vacuum cleaners

• Battery pack assembly and customization

If you are building a 21700 battery pack and need a reliable 5500mAh cell with strong discharge performance, this model is worth considering.

Supply Advantages – Large Stock & Wholesale Pricing

We understand that overseas buyers need stable supply, competitive pricing, and consistent product quality. Our advantages include:

• Large stock available for bulk orders

• Competitive wholesale pricing for volume buyers

• Stable supply of INR21700-5500 cells

• Consistent cell performance for battery pack assembly

• Standard packaging: 4 inner boxes per carton, 80pcs per inner box, 320pcs per carton

• 12-month warranty from manufacturing code

• Fast quotation and order processing

Whether you need cells for e-bike packs, power tool batteries, or energy storage projects, we can support your sourcing needs. Contact us with your required quantity and destination port to get the latest 21700 5500mAh battery wholesale price.

Safety and Reliability

The INR21700-5500 is tested according to the specification for safety and environmental performance. Tests include:

• Overcharge

• Forced discharge

• Short circuit

• Crush

• Heating test at 130°C

• Altitude / low pressure simulation

• Free drop

• Vibration

• Temperature cycling

Under these tests, the required standard is no fire and no explosion or no leakage, no fire, no explosion, depending on the test item. This makes the cell suitable for demanding battery pack applications when used within the specified operating conditions.

Storage and Handling

Proper storage helps maintain cell performance:

• Storage temperature: -20°C to 45°C, 65%±20% RH

• Long-term storage over 3 months: -20°C to 25°C, 65%±20% RH

• Long-term storage voltage: 3.5V–3.7V

• Recharge every 3 months with 0.5C current until voltage reaches 3.65V

• Operating temperature: charge 0°C to 45°C; discharge -20°C to 60°C (ambient)

Always follow the battery warnings and cautions in the official specification. Do not short circuit, disassemble, crush, puncture, or expose cells to fire or water.

Request Wholesale Price for INR21700-5500

We have large stock of the INR21700-5500 5500mAh 21700 lithium battery and offer favorable wholesale pricing for bulk orders. If you are looking for a reliable 21700 battery supplier, contact us now with your target quantity, application, and delivery requirements.

Get the latest wholesale quote today.

📧 Email: info@becellbattery.com
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FAQ

Q1: What is the capacity of the INR21700-5500?
A: It has a nominal capacity of 5500mAh and a minimum capacity of 5500mAh at 0.1C discharge.

Q2: What is the maximum continuous discharge current?
A: 16.5A without temperature cut, or 30A with 75°C temperature cut-off.

Q3: What is the maximum pulse discharge current?
A: 70A for 2 seconds.

Q4: Do you have bulk stock?
A: Yes, we have large stock available. Please contact us for current stock and wholesale pricing.

Q6: What is the warranty period?
A: 12 months from the manufacturing code.