Key Features
- 3600mAh High Capacity: Delivers 3600mAh nominal capacity at 3.6V for extended runtime in flashlights and compatible button top 18650 devices — ideal for high-output lighting applications demanding long per-charge endurance.
- 10A Maximum Continuous Discharge: Supports up to 10A maximum continuous discharge current for reliable, stable power delivery in compatible single-cell and multi-cell applications.
- PCB Multi-Protection Circuit: Integrated protection board guards against overcharge, over-discharge, and short circuit conditions for safe, reliable operation in compatible devices without the need for an external BMS.
- 500+ Cycle Life with Low Self-Discharge: Rated for over 500 charge/discharge cycles with a low self-discharge rate, ensuring long-term cost efficiency and reliable charge retention between uses.
- Button Top Terminal: Positive button top configuration ensures broad compatibility with devices designed for button top 18650 cells — note that this cell is physically longer than a standard flat top unprotected 18650 battery due to the added PCB and button top terminal.
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 battery is a high-capacity, PCB-protected lithium-ion cell engineered for flashlights and other compatible button top 18650 devices requiring both extended runtime and built-in cell-level safety protection. Delivering 3600mAh at 3.6V nominal voltage with a 10A maximum continuous discharge rating, it provides the capacity and current output needed for demanding lighting and portable electronic applications. The integrated multi-protection circuit board safeguards against overcharge, over-discharge, and short circuit conditions, enabling safe operation in compatible devices without an external BMS. A rated cycle life of over 500 charges and a low self-discharge rate make this cell a reliable and economical long-term power solution. 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
- High-output flashlights and portable lighting systems designed for protected button top 18650 cells
- Consumer electronics and personal devices requiring button top 18650 format with built-in cell-level protection
- Portable power banks and single-cell devices benefiting from PCB overcharge and over-discharge protection
- Camping, outdoor, and emergency lighting equipment requiring long runtime and reliable charge retention
- Replacement cells for compatible button top 18650 devices where high capacity and protection are both required
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 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.
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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 a cell shows signs of thermal runaway (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 combustibles. Lithium-ion cell fires are Class B fires — use an ABC/dry-chemical extinguisher, or douse with large amounts of water to cool the cell and prevent spread. 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 for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
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.