18650 Batteries Protected Lithium Ion 3300mAh Cells Offering Extended Runtime and Performance for Diving Flashlight Equipment
Product Overview
OEM Logo Wholesale Bateria 18650 Protected 3.6V 3300mAH Lithium Rechargeable Battery for Diving Flashlight
The XTAR 3.6V 18650 3300mAh rechargeable Li-ion battery delivers high performance for flashlights, featuring 10A continuous discharge, multi-protection (over-charge, over-discharge, short-circuit), and low self-discharge. Rated for 500+ cycles, it operates reliably in -20°C to 60°C extremes and meets RoHS/CE standards. Includes storage case and charger compatibility. Compact, safe, and eco-friendly—ideal for high-drain devices.
Key Features
- Large Capacity: 3300mAh provides extended runtime for diving flashlights
- Multi-Protection: Offers over-charge, over-discharge, and short-circuit protections for safety
- Long Cycle Life: Over 500 cycles ensure lasting performance for your device
- High Capacity Cell: Uses LiCoO2 cells for high energy density and reliability
- Compact Design: 18650 size fits seamlessly into various diving flashlights
Technical Specifications
| Nominal Capacity | 3300mAh |
| Nominal Voltage | 3.6V |
| Standard Charging Voltage | 4.2V |
| End-of-discharge Voltage | 2.5V |
| Continuous Discharge Current | 10A |
| Cell | NCR18650D |
| Size | Φ18.4±0.3mm×68.8±0.5mm |
| Protected or Not | Yes |
Applications
![XTAR battery applications in diving flashlights and other equipment]()
About XTAR
Established in 2006, XTAR is a leading provider of high-quality lithium-ion batteries, smart chargers, and LED flashlights. Based in Shenzhen, we integrate R&D, production, and sales to deliver innovative power solutions. With over 20 years of expertise, XTAR is your trusted partner for reliable energy products, offering customized solutions for OEM and wholesale clients.
Company Timeline
2005
At XTAR, we fully understand the importance of batteries to a device's performance. We selected superior batteries and LEDs to produce the PK keychain flashlight, which is brighter and has a longer runtime than any other model on the market.
2006
With product and user safety in mind, we developed the industry's first 16340 and 18650 lithium-ion batteries equipped with protection circuits, ushering in a new era of lithium-ion battery safety.
2009
Pioneered three-stage charging technology for lithium batteries (Patent No.: 201720828840.6), solving overheating and incomplete charging issues.
2011
Launched WP2II charger with 0V activation & USB output, reviving over-discharged lithium batteries and improving utilization.
2013
Released PANZER XP4, the first charger intelligently adapting to lithium-ion and nickel-metal hydride batteries.
2017
Launched Over 4 Slim, the market's first 4.1A*2 fast charger with internal resistance/temperature detection and overheat protection.
2020
Launched next-gen 1.5V rechargeable AA lithium batteries, outperforming traditional NiMH batteries and rewriting AA battery history.
2024
Expanded 1.5V AA/AAA lithium battery line with Constant Voltage + Linear series, leading the mainstream of reliable power.
2025
We joined U.S. ATA & SHOT Show, entering outdoor, optical, night vision & thermal imaging sectors, delivering safe, reliable power solutions to users; launched world-first touch battery power check technology.
Manufacturing Capabilities
We operate our own factory with efficient production processes ensuring precise production cycles. Manufacturing under our original brand guarantees product consistency and provides convenient maintenance and after-sales service. XTAR integrates the brand values of safety, reliability, and innovation into every product.
![XTAR manufacturing facility and production processes]()
Partners
![XTAR global partners and distribution network]()
Global Certifications
ISO-9001 Certification
MSDS Certification
UN38.3 Certification
CE Certification
RoHS Certification
![XTAR product certification documents and compliance badges]()
Frequently Asked Questions
Can I have a sample order for Battery/Charger?
Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
What about the lead time?
Sample needs 1-2 days, mass production time needs 3-7 working days.
How do you ship the goods and how long does it take to arrive?
DHL, UPS, FedEx or TNT and others shipping method is available. Arriving time depends on the way you choose. Airline and sea shipping also optional. Warehouse in Texas, shipment is free in US.
Is it OK to print my logo on the product?
Yes. We have our own R&D Department and Factory. Both OEM and ODM are acceptable.
What industries do you provide supporting equipment for?
We can provide professional supporting services for many industries, such as electric toothbrushes, thermal imagers, infrared devices, thermal imaging scope, flashlights, toy cars, smart locks, and so on.
Where do you ship from?
We can ship from Shenzhen, China, and we also have overseas warehouses in the U.S., so we can also ship directly from the U.S.
