18650 Li-Ion 2600mAh - 3.7V Rechargeable Battery

Tenergy 30005 ICR 18650 — 2600mAh 3.7V Unprotected Flat Top Li-Ion Battery

The Tenergy 30005 is a rechargeable 18650 lithium-ion cell with a nominal 2600mAh capacity and 3.7V average voltage. It uses a flat top terminal and is unprotected (no protection PCB), so it fits standard 18650 holders and is well suited for DIY battery packs, flashlights, cameras, and other devices that call for a flat-top unprotected cell. Typical cell weight is about 44.5 g, with dimensions around 18.3 × 64.8 mm (standard unprotected 18650 length).

Note: Brand may vary. You may receive either a Tenergy 30005 or a Murata VTC5. Both are unprotected flat-top 18650 cells rated about 2600mAh at 3.7V and fit the same holders. The Murata VTC5 is a high-drain cell; high continuous discharge is not guaranteed for every unit.

KEY FEATURES

• 2600mAh nominal capacity (2450mAh minimum) for long runtime
• 3.7V nominal Li-Ion chemistry (4.2V charge / ~3.0V discharge cutoff)
• Flat top terminals — ideal for spot-welding and OEM-style pack builds
• Unprotected cell (no protection circuit board) — standard ~65 mm length for holders that expect unprotected cells
• Lightweight ~44.5 g cell with high energy density
• Rated for ~300 charge cycles (about 80% of initial capacity)
• Built-in PTC for improved safety characteristics

SPECIFICATIONS

What's Included

• 1 × Tenergy 30005 ICR 18650 2600mAh 3.7V unprotected flat top Li-Ion cell

NOTES

• Brand may vary: You may receive a Tenergy 30005 or a Murata VTC5. Both are unprotected flat-top 18650 cells (~2600mAh, 3.7V) that fit the same holders. The VTC5 is a high-drain cell, but high continuous discharge is not guaranteed for every unit.
• Flat top cells may not make contact in devices designed only for button top batteries — check your device or holder.
• This is an unprotected cell. Use a proper Li-Ion charger and, for packs, appropriate BMS / protection. Do not over-discharge, short-circuit, or charge above 4.2V.
• Unprotected length is about 65 mm. Protected cells are longer (~67–69 mm) and may not fit the same holders.
• This ICR energy cell is intended for moderate-drain applications (flashlights, cameras, DIY packs, etc.). It is not specified as a high continuous-discharge (e.g. 20A) power cell.
• Handle Li-Ion cells carefully; stop using a cell that is damaged, swollen, or overheated.