Батарейка HCB ER26500 3,6V 8500mah 2101

HCB ER26500 3.6V 8500 mAh 2101 Battery

🔋 HCB ER26500 is an industrial Li-SOCl₂ lithium-thionyl chloride primary battery in the large C size. It is designed for applications requiring long autonomous operation, stable voltage and very low self-discharge.

The battery has a nominal voltage of 3.6 V and a capacity of 8500 mAh (8.5 Ah). HCB classifies the ER26500 as an energy-type Bobbin cell, a construction optimized primarily for long-term operation at relatively low power consumption.

⚙️ Main specifications

• Brand: HCB
• Model: ER26500
• Size: C
• Chemistry: Li-SOCl₂ — lithium thionyl chloride
• Construction: Bobbin
• Nominal voltage: 3.6 V
• Open-circuit voltage at 25 °C: ≥3.65 V
• Nominal capacity: 8500 mAh (8.5 Ah)
• Maximum continuous current: 150 mA
• Maximum pulse current: 250 mA
• Diameter: approximately 25.7 mm
• Height: approximately 49.2 mm
• Weight: approximately 53 g
• Operating temperature: −55…+85 °C
• Cell type: primary, non-rechargeable

🔬 What is Li-SOCl₂?

Li-SOCl₂ stands for lithium-thionyl chloride chemistry. It provides high energy density, stable operating voltage and very low self-discharge.

For the ER26500, HCB states an average annual self-discharge rate of less than 1% after one year of storage at approximately +25 °C. This makes the battery particularly suitable for equipment designed to operate for several years without frequent battery replacement.

📏 What does C size mean?

C is a large cylindrical battery size. The ER26500 measures approximately 25.7 × 49.2 mm.

⚠️ Although it resembles a conventional household C battery, the HCB ER26500 provides 3.6 V, while a normal alkaline C cell is typically rated at 1.5 V. They must therefore not be interchanged without checking equipment compatibility.

💧 Applications

• water meters;
• gas meters;
• electricity meters;
• heat meters;
• automatic meter reading systems;
• telemetry systems;
• IoT and NB-IoT devices;
• LoRa and GSM/GPRS modules;
• sensors and controllers;
• security and alarm systems;
• industrial automation.

✅ Advantages of HCB ER26500

• high 8500 mAh capacity;
• stable 3.6 V nominal voltage;
• very low self-discharge;
• long autonomous service life;
• wide −55…+85 °C operating temperature range;
• suitable for metering and remote data transmission systems;
• industrial Li-SOCl₂ technology;
• designed for professional electronic equipment.

⚡ Load current

According to HCB's current specification, the ER26500 supports a maximum continuous current of approximately 150 mA and a maximum pulse current of approximately 250 mA.

The cell is primarily intended for equipment requiring long autonomous operation. For devices with high-power radio modules or significant short-duration current demand, the equipment's load profile should be checked before use.

🔧 Check before installation

ER26500 cells can be supplied with standard terminals, tabs, wires or ready-made connectors.

• model: ER26500;
• voltage: 3.6 V;
• capacity: 8500 mAh;
• dimensions: approximately 25.7 × 49.2 mm;
• polarity;
• terminal configuration;
• connector type, if applicable;
• compatibility with the exact equipment model.

⚠️ Important

HCB ER26500 is a primary battery, not a rechargeable battery. It must not be recharged. Attempting to recharge a primary Li-SOCl₂ cell may damage it and create a hazardous condition.

Do not disassemble, puncture, crush, short-circuit, heat or dispose of the battery in fire. Where soldered connections are required, use a factory-tabbed or wired version.

📌 About the “2101” marking: it appears in the specific Schetchik.uz product title, but HCB technical documentation does not identify it as part of the ER26500 model designation. It should therefore not be interpreted as a capacity, size or performance specification without additional product markings.

🔋 HCB ER26500 3.6V 8500 mAh is a high-capacity industrial power source for meters, telemetry systems and other electronics where multi-year autonomous operation is essential.