Samsung 25R 18650 2500mAh High‑Drain Li‑ion Battery — Flat Top

A dependable 18650 rechargeable cell from Samsung SDI, suitable for high‑drain applications that require stable output and robust performance. The 25R delivers up to 20A continuous discharge with a 2500mAh nominal capacity, in a flat‑top, unprotected format for use in devices or battery packs that incorporate appropriate protection circuitry.

Key features

Nominal capacity: 2500mAh (INR chemistry)
Continuous discharge rating (CDC): 20A
Nominal voltage: 3.7V (charge to 4.20V; cut‑off ~2.5V)
Flat‑top positive terminal; unprotected cell
Durable build for high‑drain applications
Rechargeable lithium‑ion 18650 size (18 × 65 mm)

Specifications

Manufacturer: Samsung SDI
Model / MPN: 25R / INR18650‑25R
EAN: 8438493100709
Size: 18650 (18 mm ⌀ × 65 mm L)
Weight: ~44.1 g
Nominal capacity: 2500 mAh
Nominal voltage: 3.7 V
Max charge voltage: 4.20 V (CC/CV)
Standard charge current: 1.25 A
Discharge end voltage (cut‑off): 2.5 V
Continuous discharge current: 20 A
Positive terminal: Flat top
Protection: Unprotected (no built‑in PCB)
Operating temperature: 0–50 °C (best longevity below ~30 °C)

What’s in the box

1 × Samsung 25R 18650 2500mAh Li‑ion cell (flat top)

Usage & charging guidance

Charge fully before first use to achieve rated capacity.
Use only quality, compatible Li‑ion chargers (CC/CV to 4.20 V) from reputable brands.
Do not exceed the stated continuous discharge current (20 A).
Do not discharge below the cut‑off voltage (≈2.5 V).
For multi‑cell packs, use matched cells and an appropriate BMS/protection board.
Store in a cool, dry place. If not in use for extended periods, store at ~40–60% charge.

Order now for quick delivery!

Free Next Day Delivery on orders over £40
Same Day Dispatch when ordered before 3pm
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Safety & important notes

Unprotected cell: use only in devices or packs with appropriate protection (PCB/BMS).
Never carry loose cells in pockets or bags. Use a non‑conductive battery case to prevent short circuits.
Do not crush, puncture, overcharge, reverse‑polarity, or expose to heat or fire.
If a cell is damaged, swollen, or overheats, stop using it immediately and recycle responsibly.
Manufacturer advisory: Samsung SDI does not design, intend, or approve these cells for use in consumer vaporiser/e‑cigarette devices. Follow all local safety regulations and manufacturer guidance.