Samsung 35E INR 18650 3450mAh 8A Cell

The Samsung INR18650-35E is one of the best 18650 cells on the market — combining the highest capacity in its class (3500 mAh) with a robust discharge current of 8A continuous / 13A pulse. New, original Samsung SDI cell, unused, from current production — not refurbished.

Ideal for building battery packs, electric bikes, scooters, high-power flashlights, and DIY projects.

Technical Data

Why Samsung 35E?

• Highest capacity in the 18650 class — 3500 mAh is the upper limit for this chemistry and size. More capacity = longer e-bike range, more hours of flashlight operation.
• Low internal resistance — below 20 mΩ. Minimal heat loss, the cell delivers energy efficiently.
• Proven manufacturer — Samsung SDI is one of the three largest manufacturers of cylindrical cells globally.
• Up to 1000 charging cycles — with proper use and a good BMS, the cell retains over 80% capacity after 500 cycles.

Applications

• Electric bicycles (e-bike) — 36V, 48V, 52V packs
• Electric scooters — high-capacity packs, long range
• High-power flashlights and headlamps — long illumination time
• DIY Power Banks — custom USB chargers
• UPS systems and energy storage — off-grid installations, powerwall

⚠️ Note: The Samsung 35E has a continuous current of 8A. If you need above 15–20A (aggressive e-bikes, high-load tools), consider the Samsung 25R or Samsung 30Q.

The cell does not have a built-in PCM/PCB system — it is intended for integration into packs with an external BMS system that protects against overcharging (>4.2V), over-discharging (<2.65V), and short circuits.

Frequently Asked Questions

Is this a new cell?

Yes — these are new, unused cells from current Samsung SDI production.

What is the real capacity of the Samsung 35E?

The typical capacity is 3500 mAh, the minimum guaranteed is 3350 mAh. The difference results from manufacturing tolerances; in practice, you purchase a cell close to the nominal value.

Is the Samsung 35E suitable for an electric bicycle?

Yes — it is one of the most popular cells for DIY e-bike packs of 36V and 48V. The continuous current of 8A and pulse current of 13A will work well for bicycles with power up to approximately 500–700W.

How many cycles will the Samsung 35E last?

With standard use (discharge to 2.75V, charge to 4.2V) — up to 500 cycles with capacity above 80%. With deeper discharge or fast charging, the number of cycles decreases.

How to charge the Samsung 35E?

CC/CV charger with a final voltage of 4.2V and current up to 2A. Do not charge the cell unattended or outside an appropriate container.