Samsung 40T 21700 4000mAh 30A Battery

The Samsung 40T 21700 4000mAh 30A battery represents cutting-edge energy technology from Samsung’s trusted lineup, engineered specifically for high-drain vaping devices and powerful box mods. This flat-top lithium-ion cell delivers exceptional performance for enthusiasts seeking reliable, long-lasting power.

Product Overview

Featuring a robust 4000mAh capacity combined with an impressive 30A continuous discharge rating, these Samsung 40T cells provide the perfect balance between longevity and power output. Whether you’re running dual-battery configurations or single-cell setups, this battery ensures consistent, dependable performance throughout your vaping sessions.

Price reflects a single unit purchase

Technical Specifications

• Capacity Rating: 4000mAh (nominal)
• Maximum Continuous Discharge: 30 Amperes
• Standard Operating Voltage: 3.6V
• Fully Charged Voltage: 4.2V
• Terminal Design: Flat Top Configuration
• Chemistry Type: Advanced Lithium-ion
• Cell Dimensions: 21700 format
• Brand Authenticity: Genuine Samsung manufacture

Why Choose Samsung 40T Batteries?

Exceptional Power Delivery

The 30A continuous discharge current makes these batteries perfect for sub-ohm vaping, mechanical mods, and other demanding applications that require instant power response.

Extended Usage Time

With 4000mAh energy storage, enjoy longer vaping sessions between charges compared to standard 18650 alternatives like the Sony VTC5A 18650 Battery 1pc.

Reliable Brand Heritage

Samsung’s reputation for quality control and safety standards ensures every cell meets rigorous performance benchmarks.

Versatile Compatibility

Ideal for regulated mods, unregulated devices, and various high-wattage setups requiring 21700 format cells.

Essential Safety Guidelines

Charging & Discharging Protocols:

• Avoid over-discharging below recommended voltage levels
• Never overcharge beyond 4.2V maximum threshold
• Use dedicated lithium-ion chargers with automatic cutoff features
• Battery degradation and reduced lifespan occur from improper charging habits

Handling & Storage Best Practices:

• Prevent short circuits by keeping terminals isolated
• Store in protective battery cases when not installed
• Keep away from extreme temperatures and direct sunlight
• Inspect regularly for physical damage, tears, or wrapper deterioration

Critical Safety Warnings:

• Never expose to flames or high-heat environments
• Do not stack batteries loosely – use proper holders only
• Replace immediately if showing signs of damage or swelling
• Dispose through approved recycling centers – never regular trash
  Sony VTC5A 18650 Battery 1pc