3.2V 3400mAh 26650 Lithium Ion Battery with 2000 Cycle Life for Flashlights and

Product Specification

Product Overview

The 26650 3.2V 3400mAh LiFePO4 battery is a high-performance, high-capacity lithium cell designed to provide excellent power for high-drain devices. Known as the future replacement for traditional lead-acid batteries, this LFP (Lithium Iron Phosphate) cell offers superior safety, exceptional cycle life, and wide operating temperature ranges.

Whether you are building a custom DIY battery pack, upgrading your solar energy storage system, or powering high-powered LED flashlights, the Deligreen 26650 cell delivers reliable, deep-cycle performance.

Why Choose LiFePO4 Over Lead Acid?

More and more people choose lithium batteries to replace lead-acid batteries. Lithium offers deeper cycles (up to 2000+ times), much longer lifespan, and significantly lower long-term costs.

Key Features & Benefits

• High Energy Density: Delivers 3.2V nominal voltage with a 3400mAh nominal capacity.

• Exceptional Cycle Life: Retains ≥80% capacity after 2000 cycles (0.2C5A discharge).

• Wide Temperature Range: Operates efficiently from -20°C to 60°C, making it ideal for extreme environments.

• High Safety & Stability: No leakage, no fire, no explosion. Passes rigorous free-fall and temperature performance tests.

• Low Self-Discharge: Excellent capacity retention (≥85% after 28 days of storage).

• 100% Real Capacity: Backed by our "real lithium capacity" promise.

Technical Specifications

Storage Temperature Range

• ≤ 1 month: -20°C ~ 45°C

• ≤ 3 months: -20°C ~ 35°C

• ≤ 1 year: -20°C ~ 25°C

• Voltage of Shipment: 3.2V~3.4V

Quality Testing Standards

Deligreen's 26650 cells have passed rigorous laboratory testing according to specifications:

• Cycle Life: After 2000 cycles, capacity ≥80% of nominal capacity.

• Storage Characteristics: After 12 months storage at 28±3°C, capacity retention ≥80%.

• Temperature Performance: Capacity efficiency ranges from 40% at -20°C to 100% at 25°C, and up to 96% at 60°C.

• Free Fall Test: Dropped 3 times from 1.0 meter without fire, no smoke, and OCV ≥ 90% pre-test.

Versatile Applications

The 26650 battery performs very well in high-temperature environments and can be used for a wide range of applications:

• Renewable Energy: Solar/wind energy storage systems, home energy storage.

• Transportation: Electric bicycles, scooters, golf carts, motorhomes, AGVs, yachts/marine.

• Electronics: High-powered LED flashlights, laptops, vaping devices.

• Customization: Ideal for DIY battery packs (IP55 rated for indoor/outdoor use).

Please let us know your requirements for the battery pack, and we can customize your battery system together!

Shipping & Delivery

• Shipment to USA: By sea + Express (DDP, Tax free). ETD: 5-8 days. ETA: 25-35 days after sailing.

• Shipment to EU: By railway + Express (DDP, Tax free. Excludes Switzerland, Romania). ETD: 5-8 days. ETA: 30-45 working days after shipping.

• Tracking will be updated after pickup. Please contact us for remote areas.

About Deligreen Power

Changsha Deligreen Power Co., LTD, founded in 2010, is a "Green Energy Solution Service Provider". We focus on lithium rechargeable batteries, BMS, Balancers, chargers, and relative products. We bring new technology, new ideas, and hard-working people to the industry.

Our Promises

• We promise "real" lithium capacity.

• We promise "100%" refund for any quality problem.

• We promise "100%" replacement for any shipping damage.

• We promise lifetime fast technical support.

Frequently Asked Questions (B2B Wholesale & Customization)

Q1: What is your MOQ (Minimum Order Quantity) for wholesale orders?
A1: Generally speaking, our standard MOQ is 100 pieces, which varies depending on different products and customization requirements. For large-scale projects, we offer highly competitive individual pricing. Please contact us with your estimated quantity for a detailed quote.

Q2: Can you provide OEM/ODM services to customize battery packs?
A2: Yes, absolutely. We are a "Green Energy Solution Service Provider". We can customize battery packs, voltage, capacity, BMS, connectors, and IP55-rated waterproof casing based on your specific applications (indoor/outdoor). We can also customize labels and packaging for your brand.

Q3: Are the batteries A-grade brand new? What is the actual capacity?
A3: Yes, all of these batteries we provide are 100% brand new, A-grade cells with "real" lithium capacity. We promise a "100% refund for any quality problem". The nominal capacity is 3400mAh (0.2C5A discharge). You are welcome to test the samples before bulk ordering.

Q4: Do you provide samples for testing? How long does it take?
A4: Yes, we support sample testing for B2B buyers. Normally, samples can be shipped quickly. For mass production orders, the lead time is usually 15-25 days after sailing (depending on the total quantity).

Q5: What are the shipping terms for international B2B buyers?
A5: We offer DDP (Delivered Duty Paid, Tax free) shipping to the USA (by sea + Express) and EU (by railway + Express, excluding Switzerland and Romania). ETD is 5-8 days. ETA is 25-35 days for the USA and 30-45 working days for the EU. We handle the entire logistics process for you.

Q6: What is the warranty policy and after-sales support?
A6: We offer lifetime fast technical support. We promise a 100% refund for any quality problem and a 100% replacement for any shipping damage. The battery is guaranteed for ≥80% capacity after 2000 cycles, and our 26650 cell passes rigorous quality testing including cycle life, storage characteristics, and free-fall tests.

Q7: Can I cooperate with you for a long time as a distributor?
A7: Yes. We have been a trusted Green Energy Solution Service Provider since 2010. We offer individual pricing for large-scale projects and wholesale demands. If you have any specific needs or are dissatisfied, please email our manager at info@deligreenpower.com.

Q8: How long does it take to charge this 26650 battery?
A8: It takes about 3-5 hours to fully charge on a standard 1A charger. The standard charge current is 0.2C5A with a charge limited voltage of 3.65±0.03V.