4 × 3.7V Li-ion Battery with Holder

The 4 × 3.7V Li-ion Battery with Holder Kit includes four rechargeable 18650 lithium-ion batteries and a 4-slot battery holder designed to securely hold the batteries for DIY power packs and portable electronics. This kit is ideal for Arduino, ESP32, robotics, solar projects, power banks, battery backup systems, and DIY electronics.

Features

• Full Name: 4 × 18650 3.7V Li-ion Batteries with 4-Slot Battery Holder
• Includes four rechargeable 18650 Li-ion batteries
• Durable 4-cell battery holder
• High energy density
• Low self-discharge
• Lightweight and portable
• Easy battery installation and replacement
• Suitable for custom battery pack projects

Specifications

Battery Holder Configuration

Note: The battery holder may be wired in series (14.8V nominal / 16.8V fully charged) or parallel (3.7V nominal / 4.2V fully charged) depending on the holder design. Verify the output voltage before connecting it to your circuit.

Applications

• Arduino projects
• ESP32 and Raspberry Pi projects
• Robotics
• DIY battery packs
• Portable power supplies
• Solar energy projects
• LED lighting systems
• Battery backup systems
• Educational electronics

Advantages

• Ready-to-use battery kit
• Easy battery replacement
• High energy storage capacity
• Durable battery holder
• Reusable and rechargeable
• Reliable performance
• Cost-effective power solution

Size

Package Includes

• 4 × 18650 3.7V Li-ion Rechargeable Batteries
• 1 × 4-Slot 18650 Battery Holder

Note: Use only batteries of the same type, capacity, and charge level together in the holder. Charge the batteries with a compatible Li-ion charger or Battery Management System (BMS), and never short-circuit, overcharge, or reverse the battery polarity. If assembling a battery pack, always use an appropriate BMS to ensure safe charging and discharging.