Key Features
- 3600mAh High Capacity: Nominal 3600mAh at 3.6V in a protected button top 18650 format — built for extended runtime in flashlights and compatible button top devices.
- 10A Maximum Continuous Discharge: Up to 10A continuous discharge for reliable performance across a wide range of compatible 18650 button top applications.
- PCB Multi-Protection Circuit: Integrated protection board covers overcharge, over-discharge, and short circuit for safe operation in compatible devices without an external BMS.
- 500+ Cycle Life with Low Self-Discharge: Over 500 rated charge cycles and low self-discharge rate for long-term reliability and strong charge retention between uses.
- Button Top Terminal: Positive button top terminal for broad device compatibility — longer than a standard flat top unprotected 18650. Verify fit before purchase.
Note: This is a button top protected 18650 battery which is longer than a standard flat top unprotected 18650 battery.
Overview
The XTAR 18650 3600mAh Protected Button Top is a high-capacity, PCB-protected lithium-ion cell delivering 3600mAh at 3.6V nominal voltage with a 10A maximum continuous discharge rating. The integrated multi-protection circuit board provides overcharge, over-discharge, and short circuit protection for safe operation in compatible devices. With a 500+ cycle life rating and low self-discharge rate, it is designed for reliable long-term use in flashlights and other compatible button top 18650 applications. This protected button top cell is physically longer than a standard flat top unprotected 18650 battery — always verify dimensional compatibility with your device before purchase. Do not remove the protective wrap, as doing so may compromise the protection circuit.
Applications / Uses
- Flashlights and portable lighting designed for protected button top 18650 cells
- Consumer electronics and personal devices requiring button top 18650 format with PCB protection
- Portable power banks and single-cell devices requiring built-in cell-level protection
- Camping, outdoor, and emergency preparedness lighting requiring reliable runtime and charge retention
- Direct replacement for compatible button top 18650 devices requiring high capacity and cell-level protection
Specifications
| Brand: | XTAR |
| Battery Type: | 18650 Lithium-Ion |
| Nominal Capacity: | 3600mAh |
| Nominal Voltage: | 3.6V |
| Max Continuous Discharge: | 10A |
| Cycle Life: | 500+ |
| Self-Discharge: | Low |
| Protected: | Yes (PCB) — overcharge, over-discharge, short circuit |
| Battery Top: | Button Top |
| Approx. Dimensions: | 18.3mm x 69.2mm |
| Approx. Weight: | 48g |
| Rechargeable: | Yes |
This is a button top protected 18650 battery and is longer than a standard flat top unprotected 18650 battery. Please verify device compatibility before purchase.
⚠ 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 a cell shows signs of thermal runaway (e.g., smoke, swelling, hissing, or heat), stop use immediately and, if it can be done safely, move it to a non-flammable surface (e.g., concrete or sand) away from combustible materials. Lithium-ion cells burn as Class B fires — use an ABC / dry-chemical fire extinguisher, or douse with large amounts of water to cool the cell and prevent the fire from spreading. Do not rely on a small spray; thorough cooling is required, and cells can reignite from residual heat, so monitor the area afterward. (Class D extinguishers are intended for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
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.