Key Features
- 5300mAh High Capacity: Maximizes runtime for energy-focused systems.
- 10.6A Continuous Output: Provides dependable performance for moderate-load devices.
- OEM-Grade Lithium Cell: Designed for professional battery pack integration.
- Consistent Cycle Performance: Built for long-term reliability and sustained capacity.
- High Energy Density Format: 21700 size delivers more capacity than traditional 18650 cells.
Overview
The Samsung INR21700-53G battery offers an excellent balance of capacity, efficiency, and reliability. With a robust 5300mAh rating and stable discharge characteristics, this cell is ideal for energy storage systems, industrial power solutions, and commercial battery pack manufacturing. Designed for use with external protection circuitry, the 53G is a trusted choice for professionals who require dependable high-capacity lithium-ion performance.
Applications / Uses
- Energy storage installations
- Professional battery pack manufacturing
- Portable power stations
- Industrial electronics and backup systems
- Mobility and transportation equipment
SPECIFICATIONS
| Brand: | Samsung SDI |
| Model: | INR21700-53G |
| Size: | 21700 |
| Nominal Capacity: | 5300mAh |
| Nominal Voltage: | 3.63V |
| Full Charge Voltage: | 4.2V |
| Discharge Cutoff Voltage: | 2.5V |
| Max Continuous Discharge: | 10.6A |
| Protected: | No |
| Rechargeable: | Yes |
| Cycle Life: | ~500+ cycles |
| Diameter: | 21.1mm |
| Length: | 70.0mm |
| Weight: | ~72g |
⚠ Important Safety Warnings
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case or box.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or use in devices such as e-cigarettes or vaporizers.
-
What is Thermal Runaway?
- A dangerous chain reaction where heat generated by a failing battery causes it to overheat further, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid physical damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases or boxes to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. These are signs of internal damage or instability, and continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger designed specifically for lithium-ion batteries and ensure that the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
- Prohibited Activities: Do not short circuit, modify, puncture, crush, expose to liquids, or solder directly onto the battery (spot weld only).
- Emergency Response: If the battery shows signs of thermal runaway (e.g., smoke, swelling, or heat), immediately stop use and move it to a non-flammable surface (e.g., concrete or sand). For fires, use a Class D fire extinguisher or sand—never use water.
Disclaimer
IMR Batteries is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols.
It is the reseller's responsibility to ensure all product warnings and safety guidelines are effectively communicated to their customers. Some cells are sold in bulk packaging and are not individually packaged. Resellers must provide appropriate packaging for each individual cell sold and must not distribute cells loose, unprotected, or without a proper storage box or case.
Product compatibility is the sole responsibility of the customer. IMR Batteries does not guarantee compatibility with any specific device or application. We are not responsible for the design, assembly, performance, or safety of any battery pack constructed using our cells. It is the customer’s responsibility to ensure proper cell matching, protection circuitry, configuration, and safe construction practices. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.

