Battery

Article: 18650-3200 (EVE)

Advantages of the EVE INR18650-33V 3200mAh lithium-ion battery

High energy capacity: The capacity of 3200 mAh ensures long operating times for devices.

Stable voltage: The nominal voltage of 3.6 V is suitable for most portable devices and systems.

Moderate discharge currents: The maximum discharge current of 10 A makes it suitable for medium-power applications.

Long service life: Up to 800 charge/discharge cycles without significant capacity reduction (under normal operating conditions).

Low self-discharge: Charge loss is minimal during storage, which is convenient for devices with long periods of inactivity.

Versatile application: Suitable for flashlights, power bank batteries, medical devices, power tools and other electronics.

Lightweight: Weighing only about 46 g, the cell is convenient for portable devices.

Compact size: The standard 18650 size is compatible with a wide range of devices and battery compartments.

Safety (when used correctly): High-quality materials and technology reduce the risk of overheating and explosion.

Cost-effectiveness: Excellent value for money for use in consumer and industrial electronics.

Features of the EVE INR18650-33V 3200mAh lithium-ion battery

Charging:

• Recommended charger:
  Use chargers that support lithium-ion batteries with voltage and current limiting functions. Charging voltage:

Maximum voltage: 4.2 V (overcharging may damage the battery).

• Recommended charging cut-off: when the voltage reaches 4.2 V.

Charging current:

• Standard current: 1.55 A (0.5C).
• Maximum current: 3.1 A (1C), for fast charging only.

Charging temperature:

Recommended range: 0°C to 45°C. Charging at sub-zero temperatures may cause damage.

Balancing:

• Periodic balancing is important to prevent individual cells from over-discharging.
• Use chargers with a balancing function (BMS) or an external balancing module.
• Ensure that the voltage between cells is even, especially before assembling the pack.
• BMS (battery management system):
  Install a system that monitors the voltage of each cell, shuts off charging/discharging when out of range, and provides balancing.

Depth of discharge (DoD):

• Optimal depth of discharge (DoD): Recommended DoD: 20–80%. Using the full range (0–100%) accelerates degradation and reduces service life.
• Minimum discharge voltage: 2.5 V – minimum safe value. Lower values may cause irreversible damage.

Discharge temperature: Operating range: -20°C to 60°C. At low temperatures, the available capacity decreases, but it is not recommended to completely discharge the cell under such conditions.&em>

EVE INR18650-33V 3200mAh – a reliable lithium-ion battery for your device

Key features

The EVE INR18650-33V 3200mAh battery is highly efficient and versatile. Here are its main features:

• Size: 18650
• Chemical composition: Li-Ion (INR)
• Capacity: 3200 mAh
• Nominal voltage: 3.6 V
• Maximum discharge current: 10 A
• Charging temperature: 0°C to 45°C
• Dimensions: 18.35 mm (diameter) × 65 mm (height)
• Weight: approx. 46 g

4. Storage temperature:

• Up to 1 year: 0°C to 25°C.
• Up to 3 months: 0°C to 45°C.
• Up to 1 month: 0°C to 60°C.

5. Appearance:

• No defects such as rust, discolouration or leakage that could affect commercial value are permitted.

6. Test conditions:

• Temperature: 25 ± 2°C.
• Humidity: up to 65% RH.

Equipment:

• Ammeters and voltmeters with an accuracy of 0.5 mA and 0.5 mV.
• Vernier caliper with a graduation of 0.01 mm.
• Impedance meter with a frequency of 1 kHz AC.

7. Characteristics (Tests):

7.1 Standard charge:

7.2 Fast charge:

7.4 Internal impedance:

7.5 Discharge capacity:

7.6 Temperature dependence of capacity:

7.7 Cycle life:

8. Mechanical tests:

8.1 Drop test:

8.2 Vibration:

Installation instructions for EVE INR18650-33V 3200mAh cells

1. Introduction

These instructions are intended to ensure the correct installation and operation of EVE INR18650-33V 3200mAh lithium-ion batteries. Following all steps will prevent damage to the cells and reduce the likelihood of product returns.

2. Preparation for operation

2.1 Unpacking the cells

No damage to the casing, dents, punctures, signs of leakage or smell of electrolyte.

If there is any damage, these components must not be used.

2.2 Voltage check

• Direct current: 620 mA (0.2C).
• Voltage: 4.2 V.

Shutdown: when 62 mA is reached.

2.3 Measuring capacity

Cells with a capacity below 3100 mAh should be discarded.

3. Selection and grouping of cells

3.1 Sorting by capacity

3.2 Sorting by voltage

Group cells with the same voltage (no more than 10 mV difference) to prevent imbalance.

4. Assembling the battery pack

4.1 Connecting the cells

For parallel connection:

All cells must have the same voltage and capacity.

Connect ‘+’ to ‘+’ and ‘-’ to ‘-’.

For series connection:

The voltage must increase, but the capacity remains constant.

Connect the ‘+’ of one element to the ‘-’ of the next.

Use high-quality connecting strips (nickel or copper).

4.2 Installing the control board (BMS)

Select a BMS board that matches the voltage and power of the battery pack.

For example, for a pack of 10 cells in series (10S): 42 V / 10 A.

Connect the BMS wires:

Charger and load inputs.

Balancing wires for each cell/group.

Ensure that the connections are correct according to the board diagram.

5. Battery operating cycle

5.1 Charging

Charging voltage: 4.20 ± 0.05 V per cell.

Charging current:

Standard: 0.5C (1550 mA).

Fast: 1C (3100 mA).

Stop charging when the voltage reaches 4.2 V or the cut-off current reaches 62 mA.

5.2 Discharge

Discharge cut-off voltage: 2.5 V.

Discharge current:

Standard: 0.2C (620 mA).

Maximum: 10 A.

Avoid deep discharge below 2.5 V to prevent degradation.

6. Battery storage

Long-term storage (up to 1 year): 0–25°C.

Short-term storage (1 month): 0–60°C.

Avoid humid conditions and direct sunlight.

7. Critical errors to avoid

Warranty

1. Initial warranty period:

1.1 One-year warranty on all new power supply units sold by our company.

2. Warranty cases:

2.1 The warranty applies only to power supply units purchased from our store. 2.2 Power supplies can be returned or exchanged within 30 days of the date of sale, provided that the original packaging is undamaged and there are no signs of assembly.

2.3 The supplier shall not reimburse the costs of dismantling and installation, transport services or consumables in connection with a defect in the Power Supply Unit.

2.4 The warranty is valid only if the installation instructions are followed.

3. Start of the warranty period:

3.1 The warranty begins on the date of sale to the buyer.

4. Buyer's obligations:

4.1 In the event of a change in the capacity of the Power Supply Unit, the buyer must cease operation and contact the supplier.

4.2 The buyer is responsible for ensuring that the Power Supply UnitPower Supply Unit(s) in accordance with our Commissioning and Installation Instructions.p>

5. Supplier's obligations in the event of complaints: p>

5.1 Complaints will be considered within 10 days of receipt of the Power Supply Unit and documents. p>

5.2 If the complaint is accepted, the Power Supply Unit will be replaced with a new one at no additional charge.

5.3 If the complaint is rejected, the supplier must inform the customer about the disposal of the defective Power Supply Unit in accordance with Directive 2006/66/EC and Regulation (EU) 2019/1020.

5.4 If the warranty is accepted, the power supply unit will be replaced or refunded.

6. Documents required for filing a complaint:

6.1 Receipt or invoice

6.2 Complaint form with measured data of the Power Supply and a description of the defect.

7. Exclusions from the warranty:

7.1 Lack of necessary documents.

7.2 Incorrect operation of the Power Supply.

7.3 Violation of the technical process during commissioning, assembly or disassembly of the Power Supply Unit.

7.4 Mechanical damage detected.

7.5 Unauthorised interference with the operation of the Power Supply Unit, including opening.

Return instructions

Dear customers, if you have any problems with the purchased product, please follow these steps. First, you must contact the seller through the eBay messaging system, describing the problem with the product in detail and attaching photos illustrating the situation. Second, you must provide an official document from a professional service centre confirming the problem with the item. This document must be sent together with a description of the problem. Next, you must start the return procedure through the eBay platform by following the instructions provided.

If the problem is the seller's fault, we will arrange for a courier service to pick up the device from your address. If the buyer is at fault, they are responsible for sending the device, providing a tracking number and specifying the delivery service. Once we receive the returned item, we will refund the money to your account. Please note that these instructions may only be changed with the consent of both parties: the buyer and the seller.

• Direct current: 3100 mA (1C).
• Voltage: 4.2 V.
• Cut-off: when 62 mA is reached.
• Cut-off: when 62 mA is reached.
• Cut-off: when 62 mA is reached.
• Minimum capacity: 3100 mA·h.
• No more than 30 mOhm (at an AC frequency of 1 kHz).
• After 1000 charge/discharge cycles, capacity is ≥ 70% of the initial capacity.
• Height: 1 m.
• Criteria: no explosion, fire, significant damage.
• Frequency: from 7 to 200 Hz.
• Criteria: no explosion, no leakage, voltage loss less than 10%.

1. Carefully open the package containing the cells, avoiding damage to the batteries with sharp objects.
2. Make sure that all components are intact: