Key Features
- Long Runtime Performance: 5300mAh capacity supports extended operational time.
- Reliable Output: 10.6A continuous discharge ensures stable power delivery.
- Pack-Ready Flat Top Design: Ideal for custom battery modules and professional builds.
- Efficient Lithium-Ion Chemistry: Balanced performance between energy density and discharge capability.
- Durable Service Life: Designed to maintain strong capacity retention over repeated charge cycles.
Overview
The Samsung 53G 21700 battery is built for applications where extended runtime and dependable performance are essential. Offering a strong 5300mAh capacity, this cell is suited for energy storage, commercial battery packs, and moderate-drain electronic systems. As an unprotected flat-top cell, it is intended for use in battery packs that incorporate external protection and battery management systems.
Applications / Uses
- Solar and energy storage systems
- Portable power equipment
- Commercial and industrial battery packs
- Backup and emergency power solutions
- Mobility and transport battery modules
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 |
| Dimensions: | 21.1mm x 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.
- 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 for e-cigarettes, vaporizers, or similar devices.
-
Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases 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. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
-
Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If the battery overheats, emits smoke, or swells, move it to a non-flammable surface (e.g., sand or concrete) and stop use immediately. In case of fire, use a Class D fire extinguisher or sand. Do not use water.
Disclaimer
18650Battery.com 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 safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.