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3.6V C ER26500 Li-SoCl2 Battery (8500/9000mAh) | Pkcell

Short Description:

With 20+ Years of Experience, Pkcell has become a leading Li-Socl2 Battery manufacturer, Specializing in the production of the ER26500 C 3.6 V battery.


Dimension: 26.2*50.5 mm

Weight: 55 g

Self-Discharge Rate (Year): <1%

Shelf Life: >10 Years

Opearting Temperature: -55~85 °C

Standard Current: 2 mA 

Max Discharge Current: 130 mA (continuous), 300 mA (Pulse)

Applications : Electronic devices and Electric power/water/gas meters,Memory ICs and more.


Certification

Certified By IEC, SNI, BSCI, and More, Ensuring Top-Notch Quality and Safety.

PKcell Certification


Product Detail

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Understanding ER26500 Battery

The ER26500 battery is a primary lithium battery. This means you can not recharge it. It uses lithium-thionyl chloride (Li-SOCl₂) as its chemical makeup and has a cylinder shape. This battery operates at a voltage of 3.6V. The name "ER26500" refers to its size, which is 26.2mm in diameter and 50.5mm in height. It is classified as a 'C' size battery. The ER26500 size C 3.6 V batteries are great for devices that run on a higher voltage. Their strong voltage and good discharge features make them a top choice for many purposes. These batteries are made for devices that require lasting, steady power, such as water meters, GPS trackers, industrial sensors, and security systems. 

 

Key Features of Pkcell ER26500

 

  • High and Stable Voltage
  • High Minimum Voltage During Pulsing
  • Stainless Steel Container
  • Hermetic Glass-to-metal Sealing
  • Low Self-discharge Rate (Less than 1% After 1 year of Storage at +25℃)
  • Wide Operating Temperature (-60℃~+85℃)
  • Restricted for transport(class 9)

 Main Applications of Pkcell ER26500

 

  • Gas Metering
  • Utility Metering
  • Alarms and Security Devices
  • Memory Back-up
  • Tracking Systems
  • Professional Electronics

Cost-effective Alternatives to Tadiran, Saft, Xeno & Tekcell

PKCELL ER Model Equivalent Competitor Model(s)
ER26500 LS26500 (Saft)
ER14505 LS14500 (Saft), XL-145F (Xeno), Tekcell SB-AA02, TL-5186 (varies)
ER14250 TL-5902 (Tadiran), Tekcell 1/2AA, TL-2150, XL-060F, XL-055F, SL-760, TL-5104, LS14250
ER17505 LS17500 (Saft)
ER34615 LS33600 (Saft), TL-5930 (Tadiran), TL-5920, XL-205F, LSH20 (Saft)
ER18505 LS-18505, TL-5955 (Tadiran)
ER17335 LS-17335, TL-5903 (Tadiran), TL-5903S

Specification Of Other Li-SOCl2(Energy Type) Models

 

Model IEC Nominal Voltage Dimensions  Nominal Capacity Standard Current  Max Continuous Discharge Current  Max Pulse Discharge Current Cut-off Voltage Weight Approx Operating Temperature
ER10450 AAA 3.6 10.0×45.0 800 1.00 50 60 2.00 9 -55~+85
ER14250 1/2AA 3.6 14.5×25.0 1200 0.50 20 45 2.00 10 -55~+85
ER14335 2/3AA 3.6 14.5×33.5 1650 0.70 75 150 2.00 13 -55~+85
ER14505 AA 3.6 14.5×50.5 2400 1.00 100 200 2.00 19 -55~+85
ER17335   3.6 17×33.5 2100 1.00 100 200 2.00 30 -55~+85
ER17505   3.6 17×50.5 3400 1.00 100 200 2.00 32 -55~+85
ER18505 A 3.6 18.5×50.5 4000 1.00 120 200 2.00 32 -55~+85
ER26500 C 3.6 26.2×50.5 8500 2.00 130 300 2.00 55 -55~+85
ER34615 D 3.6 34.2×61.5 19000 3.00 200 400 2.00 107 -55~+85
ER9V   3.6 48.8×17.8×7.5  8500 2.00 130 300 2.00 16 -55~+85

More Than Just Individual Cells - We Offer Complete Power Solutions.

 

  • Single Battery With Cables and Connectors
  • Custom LiSOCl2 Battery Packs Based on Your Tailored Needs

ER-battery-and-battery-pack

Why Choose Pkcell Battery?

Decades Proven Expertise

20 years in battery manufacturing. Trusted by global brands and customers in 100+ countries.

Global Reach

Experienced exporter to 100+ countries. Offering flexible Air/Sea shipping and delivery terms.

Flexible Partnership

Flexible Formal Order MOQ (from $500) and samples available. Partnering with you from design to delivery.

Certified Quality

Strict QC in our 28,000 ㎡ facility. IEC, CE, RoHS certified for reliable performance.

Expert Support

Dedicated technical team with deep Lithium battery knowledge, ready to support your integration.

Custom Solutions

50+ R&D experts design tailored battery packs and solutions for your unique needs.

Typical Discharge Characteristics

Typical Discharge Characteristics

Warning:

  • These are non rechargeable batteries.
  • Do not recharge, short circuit,crush, disassemble, heat above 100℃ incinerate.
  • Do not use the battery beyond the permitted temperature range.

Frequently Asked About LiSoCl2 Battery

How long will my order take, how can I pay, and what are the shipping options?

 

  • Lead Time:  Standard samples typically arrive in 7-12 days. Formal orders usually take around 25 days, though smaller quantities might ship faster, potentially within 15-18 days.
  • Payment Methods:  We accept various payment types, including T/T (Telegraphic Transfer), L/C (Letter of Credit), and PayPal.
  • Shipping:  We offer flexibility! Depending on your needs and location, we can ship your order via air freight (using carriers like FEDEX, DHL, UPS, EMS, etc.) or via sea freight.
  • Delivery Terms:  We can work with several common international shipping terms, including EXW, FCA, FOB, CFR, and DDU.

 

What is your minimum order quantity (MOQ), and can I get samples first?

We have a minimum order value of USD $500. The actual quantity you receive depends on the unit price of the specific batteries you choose. Absolutely! We understand you need to test our products. We're happy to provide samples for your evaluation before you place a formal order.

What exactly is passivation? Sounds a bit technical!

Passivation is an interesting natural phenomenon observed in Lithium Thionyl Chloride (LiSO₂Cl₂) batteries! When lithium metal touches the thionyl chloride (SOCl₂) electrolyte, a thin, protective layer forms on the surface of the lithium negative electrode. This layer, mostly made up of Lithium Chloride (LiCl), creates a high-resistance barrier that prevents a continuous reaction between the lithium and the electrolyte. Isn't it fascinating how this process helps maintain the battery's performance?

What are the Effects of Li-SOCl2 Passivation?

Passivation has some excellent benefits along with a few potential drawbacks that are important to consider:

Benefits:

  • Low Self-Discharge: The passivation layer does a fantastic job of slowing down any unwanted side reactions between the lithium and the electrolyte, leading to an impressively low self-discharge rate. Thanks to this, LiSO₂Cl₂ batteries can be stored for many years, often over 10 years, while still keeping most of their capacity intact.
  • Long Shelf Life: Because of the low self-discharge, these batteries can hold onto their energy for quite an extended period, which is great for long-term storage.

Potential Drawbacks:

  • Voltage Delay: When a passivated battery starts discharging—especially after being stored or during high-current pulses—the current first needs to break through or dissolve the high-resistance passivation layer. This can temporarily drop the battery's voltage below its normal operating level before it bounces back. This occurrence is often referred to as "voltage delay."
What chemistry does ER26500 use?

It uses Lithium Thionyl Chloride (Li-SOCl₂) chemistry, which offers high energy density, wide operating temperature (-55°C to +85°C), and excellent shelf life of up to 10–15 years.

How long does an ER26500 battery last?

Depending on the application, the ER26500 battery can last up to 10 years or more, especially in low-drain devices or when paired with a capacitor or hybrid pulse capacitor (HPC) for handling pulses.

Is ER26500 rechargeable?

No. The ER26500 is a primary lithium battery and is not rechargeable. Attempting to recharge it may cause dangerous reactions.

What’s the difference between ER26500 and standard C batteries?

Although they share the same size, ER26500 offers much higher energy capacity, longer life, and more stable performance under extreme conditions compared to alkaline or NiMH C batteries.

Are there different versions of the ER26500 battery?

Yes. ER26500 is available with various terminations like tabs, wires, or connectors, and can be used individually or in battery packs designed for specific industrial and OEM applications.


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