🔋 3.7V A Grade Rechargeable Li-Ion Lithium Battery (18650)

The 3.7V A Grade Lithium-Ion Rechargeable Battery is a premium-quality cylindrical power cell designed for high performance, stability, and long service life. This battery is suitable for high-drain and professional electronic applications where consistent output and durability are required.

A Grade cells are carefully tested for capacity accuracy, internal resistance stability, and long cycle life, ensuring superior performance compared to lower-grade batteries.

✅ Key Features

• 🔋 Battery Type: Lithium-Ion (Li-ion)

• ⚡ Nominal Voltage: 3.7V

• 🔄 Rechargeable: Yes

• 📏 Size: 18650 (18mm diameter × 65mm length)

• 🔋 Typical Capacity: 2000mAh – 3000mAh (depending on model)

• 🔁 Long Cycle Life: 500–1000 charge cycles

• 🔥 High Energy Density

• ⚙️ Low Internal Resistance

• 🔌 Stable High Current Output

• ♻️ Environment Friendly & Reusable

📊 Technical Specifications

🔧 Suitable Applications

• 🔦 High Power LED Flashlights

• 🔋 Power Banks

• 🚲 Electric Bike Battery Packs

• 🔊 Portable Speakers

• 🚨 Emergency Lighting Systems

• 🤖 Robotics & Arduino Projects

• 🔌 Solar Battery Storage Packs

• 🛠️ DIY Lithium Battery Packs

• 🔧 Medical & Industrial Devices

🏆 Why Choose A Grade?

✔ Higher actual capacity
✔ Better performance consistency
✔ Longer lifespan
✔ Safer operation under load
✔ Suitable for high-drain devices
✔ Lower heat generation

⚠️ Safety Guidelines

• Always use a proper 18650 Li-ion charger (4.2V cutoff).

• Do not overcharge or over-discharge.

• Avoid short-circuiting.

• Do not puncture, crush, or expose to fire.

• Store in a cool, dry place.

• Use protection circuit (BMS) in battery packs.

🔍 A Grade vs B Grade (Quick Comparison)