2pcs Sanyo 3.7V 18500 2040mAh 16650 2500mAh Li-ion Rechargeable Battery replace for Portable DVD Laptop Notebook Cell LED Light

2pcs Sanyo 3.7V Li-ion Rechargeable Battery with Tabs for DIY Battery Pack

Professional-grade cylindrical lithium-ion rechargeable batteries featuring premium Sanyo cells. Sold in convenient 2-piece packs with four tab configurations (Type A, Type B, Type C, Type D) specifically designed for DIY battery pack assembly. Choose between 18500 (2040mAh) or 16650 (2500mAh) models based on your capacity and size needs.

Key Features

• 2-Piece Pack: Convenient quantity for battery pack projects
• Two Models Available: 18500 (2040mAh) or 16650 (2500mAh)
• Four Tab Configurations: Type A, Type B, Type C, Type D for maximum flexibility
• Sanyo Cells: Premium Japanese cells for superior performance
• DIY Battery Pack Friendly: Pre-welded tabs for easy series/parallel connections
• Assembled by FMA: Quality assembly with reliable tab welding
• Long Cycle Life: 500+ charge cycles

Package Contents

• 2× Sanyo 3.7V Li-ion Batteries with tabs (model and tab type as selected)

Model Comparison

Technical Specifications

Four Tab Configuration Options for DIY Battery Pack Assembly

Common Applications

• DIY Battery Packs: Custom battery pack assembly for various devices
• Portable DVD Players: Replacement battery packs
• Laptop Batteries: Laptop battery pack repair and upgrade
• Notebook Batteries: Notebook battery cell replacement
• LED Lights: Portable LED lighting systems
• Flashlights: High-power flashlights and torches
• Power Tools: Cordless tool battery pack assembly
• Solar Systems: Solar power storage battery banks
• Custom Projects: Electronics projects requiring cylindrical Li-ion cells

DIY Battery Pack Assembly with 2-Piece Pack

2S Configuration (Series - 7.4V):

• Connect the 2 cells in series
• Positive (+) of Cell 1 to Negative (-) of Cell 2
• Result: 7.4V with same capacity (2040mAh or 2500mAh)
• Best Tab Types: Type A or Type C
• Common Use: 7.4V battery packs for cameras, tools, devices

2P Configuration (Parallel - 3.7V):

• Connect the 2 cells in parallel
• All Positive (+) tabs together, all Negative (-) tabs together
• Result: 3.7V with doubled capacity (4080mAh or 5000mAh)
• Best Tab Types: Type B or Type D
• Common Use: High-capacity 3.7V battery packs

Building Larger Packs:

• Order multiple 2-piece packs to build larger configurations
• Example: 2 packs (4 cells) = 2S2P (7.4V, doubled capacity)
• Example: 3 packs (6 cells) = 3S2P (11.1V, doubled capacity)
• Mix different tab types for complex layouts

Choosing the Right Model

Choose 18500 (2040mAh) if you:

• Need standard 18mm diameter cells
• Have space constraints (shorter 50mm length)
• Building compact battery packs
• Need compatibility with 18650-style holders (with spacers)
• Prefer lighter weight

Choose 16650 (2500mAh) if you:

• Need higher capacity (23% more than 18500)
• Have slim diameter requirements (16mm)
• Want longer runtime between charges
• Building slim, high-capacity packs
• Need maximum energy in narrow spaces

Choosing the Right Tab Type

Choose Type A if you:

• Need standard series connection
• Building vertical battery stacks
• Want traditional battery pack layout
• Following standard assembly procedures

Choose Type B if you:

• Need parallel connections
• Building side-by-side battery packs
• Want compact pack design
• Need opposite-side tab orientation

Choose Type C if you:

• Need flexible custom configurations
• Want easy soldering access
• Building unique battery pack layouts
• Prefer same-side tab orientation

Choose Type D if you:

• Need enhanced mechanical stability
• Building high-current applications
• Want dual tab connections for reliability
• Need maximum current handling capability

Why Choose Sanyo Cells?

• Japanese Quality: Manufactured by Sanyo in Japan
• High Reliability: Proven performance in demanding applications
• Consistent Quality: Strict manufacturing standards
• Long Cycle Life: 500+ charge/discharge cycles
• Stable Chemistry: Safe and reliable Li-ion technology
• Industry Trusted: Used by professionals worldwide

Why Choose FMA Assembly?

FMA specializes in professional battery pack assembly using premium cells. Our tab welding ensures reliable connections for DIY battery pack projects. Each 2-piece pack is tested and assembled to strict quality standards, perfect for custom battery pack builders and electronics enthusiasts.

Safety Information

⚠️ IMPORTANT SAFETY WARNINGS:

Assembly Safety: Battery pack assembly requires knowledge of electrical safety. If unsure, consult a professional.

BMS Required: Always use a Battery Management System (BMS) for multi-cell packs to prevent overcharge, over-discharge, and short circuits.

Charging: Use only Li-ion compatible chargers with correct voltage settings (4.2V per cell).

Storage: Store at 40-60% charge (3.7-3.9V per cell) in cool, dry place.

Operation: Do not short-circuit, puncture, crush, or disassemble cells.

Temperature: Charge: 0-45°C, Discharge: -20-60°C, Storage: -20-35°C.

Disposal: Dispose according to local regulations. Do not incinerate or dispose of in regular trash.

Polarity: Always verify polarity before connecting cells. Reversed polarity can cause fire or explosion.

Shipping & Transportation Notice

Hazardous Material: This product contains lithium-ion batteries and is classified as dangerous goods for shipping purposes.

Air Transport Restrictions: Due to international air transport regulations, battery shipments may be subject to additional restrictions and longer transit times.

Packaging Compliance: All shipments comply with UN3480 or UN3481 packaging requirements for lithium-ion batteries.

Delivery Time: Battery-containing parcels may experience extended delivery times due to stricter customs inspections and carrier handling procedures.

Documentation: Proper hazardous materials documentation accompanies all shipments to ensure compliance with international shipping regulations.