Sony 18650 3.7 V 2600 mAh 40 A Lithium-Ion Cell is a high-performance rechargeable battery suited for demanding devices. It offers a balanced blend of capacity, discharge power, low internal resistance, and long cycle life.

Key Features

Nominal Voltage: 3.7 V — standard for most 18650 Li-ion cells
Capacity: 2600 mAh — ample energy storage for extended use
High Discharge Current: 40 A (pulse / max) — supports high-drain applications
Low Internal Resistance — efficient power delivery under load
Standard 18650 Form Factor — 18 mm × 65 mm, fits most devices / holders
Lightweight & Durable — carefully engineered for safe, consistent performance

Specifications (Typical / Approximate)

Rated Capacity: 2600 mAh (minimum ~2550 mAh under tolerance)
Charge Voltage: 4.20 V
Cut-off / Discharge Limit: ~2.75 V
Standard Charge Rate: 0.5C (~1.3 A)
Maximum Charge Current: ~1.0C (~2.6 A)
Max Continuous Discharge: ~1.0C (~2.6 A)
Pulse / Peak Discharge: up to 40 A (short bursts)
Operating Temperature: Discharge: −20 °C to 60 °C; Charge: 0 °C to 45 °C

Wholesale & Retail Benefits

High Demand Accessory — batteries are a regular replacement item in vaping / electronics
Well-Known Brand & Trust — Sony is reputable, helps sell confidence
Broad Compatibility — fits many devices that accept 18650 form factor
Bundling Potential — pair with mods, chargers, wraps, etc.
Low Risk — durable design and known spec reduce customer complaints

Usage & Safety Guidelines

Always use a suitable charger with CC/CV (constant current → constant voltage) charging profile
Do not exceed the specified maximum charge / discharge rates for safe operation
Inspect the battery sleeve regularly; do not use if wrap is damaged
Avoid deep discharge below ~2.7 V — protect battery longevity
Do not expose to extreme heat, fire, or puncture the cell
Store batteries at ~30 % to 50 % charge if stored long term
Transport batteries in protective cases or sleeves — no loose in pockets or with metal objects