Samsung INR18650-35E Cells – Ideal for Electric Vehicles and More

Introduction

Lithium-ion cells are the foundation of modern power systems, and one of the most popular models is the Samsung 35E. This cylindrical 18650 cell boasts high capacity and an excellent performance-to-size ratio, making it suitable for various devices, from power tools to energy storage systems.

Samsung INR18650-35E batteries are an excellent choice for building electric battery packs, offering reliability, long range, and high efficiency. With a capacity of 3450mAh and a discharge current of up to 8A per cell, they provide stability and performance over many cycles. Thanks to the lowest internal resistance on the market for 18650 cells (only 19.8mΩ), the Samsung 35E excels in delivering current without excessive overheating. This makes it superior to other cells such as the LG MJ1, Sanyo GA, or EVE 35V in terms of current efficiency.

Samsung 35E Technical Specifications

The Samsung 35E offers impressive technical parameters, making it one of the best cells in its class:

• Model: INR18650-35E
• Manufacturer: Samsung
• Short Name: 35E
• Type and Size: Li-Ion, 18650
• Nominal Capacity: 3450 mAh
• Impedance: Below 20mΩ
• Dimensions: 18.3 × 65.0 mm
• Nominal Voltage: 3.6V
• Discharge Current: 8A continuous / 13A pulse
• Charging Voltage: 4.2V
• Recommended Charging Current: 1.675 A
• Maximum Charging Current: 4 A
• Lifespan: Up to 1000 cycles under standard use
• Weight: ~48 g
• Cell Condition: Factory new!

These parameters make the Samsung 35E an excellent choice for those seeking a balance between performance and longevity.

Construction and Technology of Samsung 35E Cells

The Samsung 35E utilizes lithium-ion NCA chemistry (LiNiCoAlO₂), ensuring high energy density and good thermal stability. It is one of the highest-capacity 18650 models while maintaining a reasonable discharge current.

Key Structural Features:

• Cylindrical 18650 format – a widely used standard
• Advanced protection systems preventing overheating and overloading
• Optimal temperature resistance for increased safety

Applications of Samsung 35E Cells

Thanks to its versatility, the Samsung 35E is used in various industries and devices, including:

• Electric bikes and scooters – high capacity ensures long runtime per charge
• Power tools and household appliances – stable performance and long cycle life
• Power banks and mobile devices – ideal for high-capacity energy storage banks
• Energy storage systems – effective solution for solar systems and backup power

Advantages of Samsung 35E Cells

Samsung 35E stands out due to several key benefits:

✅ High capacity in a compact size – ideal for long runtime applications
✅ Optimal balance between capacity and discharge performance – suitable for both low and medium-load devices
✅ Long lifespan – up to 1000 charge cycles without significant capacity loss
✅ Thermal stability and user safety – reduced risk of overheating due to optimized working parameters

Disadvantages and Limitations of Samsung 35E Cells

Despite its advantages, the Samsung 35E also has some limitations:

⚠️ Maximum discharge current of 8A may be insufficient for high-power applications, such as certain high-performance e-bikes
⚠️ Longer charging time when utilizing full capacity – requires optimal chargers
⚠️ Potential overheating under extreme use, if subjected to excessive load

Comparison of Samsung 35E with Other Popular Cells

Samsung 35E vs. LG MJ1

🔹 Capacity: Both cells have similar capacity (~3500 mAh)
🔹 Maximum Discharge Current: LG MJ1 offers 10A, providing a slight advantage over the 35E
🔹 Lifespan: Samsung 35E is slightly more durable in charge cycles

Choice: If capacity and longevity are the priority, the Samsung 35E is better. If a higher discharge current is needed, the LG MJ1 might be preferable.

Samsung 35E vs. Panasonic NCR18650GA

🔹 Capacity: Similar capacity between both models
🔹 Discharge Current: Panasonic NCR18650GA supports a higher maximum discharge current (10A)
🔹 Price: Samsung 35E is often a more cost-effective option

Choice: Panasonic is better for applications requiring higher discharge current, but Samsung 35E is ideal for moderate loads.

Samsung 35E vs. Sony Murata VTC6

🔹 Capacity: Samsung 35E has a higher capacity than VTC6
🔹 Maximum Discharge Current: Sony Murata VTC6 supports up to 15A, making it more suitable for high-power applications
🔹 Durability: Samsung 35E excels in charge cycle longevity

Choice: If capacity and longevity matter, the Samsung 35E is superior. For higher current applications, VTC6 is the better choice.

When Should You Choose Samsung 35E?

The Samsung 35E is a great choice if you need:

✔ A high-capacity, long-life cell
✔ A battery for moderate-power devices (up to 8A)
✔ An optimal balance of price and quality

For genuine Samsung 35E cells, it is essential to purchase from reputable suppliers. CityLion.pl ensures original, high-quality products, crucial for cell safety and performance.

How to Properly Charge Samsung 35E Cells

Recommended Charging Voltage and Current

Samsung 35E cells require precise charging to ensure long life and safety. The recommended charging voltage is 4.2V, and the optimal charging current is up to 1.7A. However, for extended lifespan, it is best to charge at 1A or lower.

Optimal Chargers and Charging Techniques

For charging, use smart chargers that offer protection features, voltage balancing, and automatic cutoff upon full charge. Popular models include Liitokala Lii-500, XTAR VC4S, Opus BT-C3100.

The best method is CC/CV (Constant Current/Constant Voltage) charging, where the charger supplies a constant current initially, then reduces the current as the voltage reaches 4.2V.

How to Avoid Premature Cell Wear

• Do not exceed 4.2V – Overcharging shortens lifespan and can cause overheating.
• Do not discharge to zero – Minimum voltage should be at least 2.5V, but ideally above 3.0V.
• Avoid fast charging – Slower charging extends the battery’s lifespan.
• Do not store fully charged cells for long periods – The ideal storage level is 3.7–3.8V.

Safety Precautions

Risks of Improper Usage

Misusing lithium-ion cells can lead to overheating, and in extreme cases, even explosions. Common risks include:

• Overcharging and deep discharging, weakening the chemical structure
• Short circuits, leading to excessive heat and potential fire
• Mechanical puncturing, causing rapid energy release

Built-in Protection Systems

Samsung 35E does not include built-in PCB protection, so it is best used with a Battery Management System (BMS) for added safety.

Common User Mistakes

• Using improper chargers
• Using damaged or expired cells
• Storing cells in extreme temperatures

By following these guidelines, Samsung 35E cells can provide safe, long-lasting, and efficient performance.

Frequently asked questions

🔹 Jak długo wytrzymuje ogniwo Samsung 35E?
Około 1000 cykli ładowania, co oznacza kilka lat użytkowania przy standardowym obciążeniu.

🔹 Czy ogniwo Samsung 35E można ładować szybką ładowarką?
Tak, ale należy stosować maksymalnie 4 A, aby nie skrócić żywotności ogniwa.

🔹 Jak odróżnić oryginalne ogniwo Samsung 35E od podróbki?
Sprawdzaj oznaczenia producenta, numer seryjny i jakość nadruków – podróbki często mają niedokładne detale.

🔹 Czy Samsung 35E jest lepszy od innych ogniw 18650?
Zależy od zastosowania – jeśli potrzebujesz wysokiej pojemności i umiarkowanego prądu rozładowania, jest to świetny wybór.

🔹 Jak przechowywać ogniwa, by nie straciły pojemności?
Przechowuj w chłodnym i suchym miejscu, najlepiej naładowane do ok. 40–50%.

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