BAK N18650CR-35T – High Capacity Low-Temperature 18650
3500mAh with 10.5A CDR and enhanced low-temperature performance. Reliable choice for pack builders working in cold environments.
Technical Specifications
| Specification | Value |
|---|---|
| Format | 18650 |
| Nominal Capacity | 3500mAh |
| Nominal Voltage | 3.6V |
| CDR | 10.5A |
| Chemistry | INR NMC |
| Positive Terminal | Flat Top |
| Weight | 48g |
| Charge Voltage | 4.2V |
| Discharge Cutoff | 2.5V |
Safety Warning
Unprotected cell. Always use with a BMS. Never short-circuit or overcharge. Keep away from fire and extreme heat. Not for use in e-cigarettes or similar devices.
Cell Specification
| Item | Specification and comments |
|---|---|
| Cell model | N18650CR‑35T – cylindrical lithium‑ion rechargeable cell |
| Rated capacity | 3360mAh – by standard charge and discharge at 25℃ (standard charge 0.5C / 1680mA to 4.20V, then CV to 0.01C / 33mA; standard discharge 0.2C / 672mA to 2.50V) |
| Typical capacity | 3500mAh – by standard charge and discharge at 25℃ |
| Nominal voltage | 3.6V |
| Rated energy | 12.10Wh |
| Typical energy | 12.60Wh |
| Limited charging voltage (Ucl) | 4.20V |
| End of discharge voltage (Ude) | 2.50V |
| Upper limited charging voltage (Uup) | 4.25V – must not be exceeded to avoid safety issues |
| Discharge cut‑off voltage (Udo) | 2.00V – must not be lower to avoid safety issues |
| Standard charging current (Icr) | 0.5C (1680mA) |
| Standard discharging current (Idr) | 0.2C (672mA) |
| Maximum charging current (Icm) | 1C (3360mA, 25℃, not for cycle life) |
| Maximum discharging current (Idm) | 3C (10080mA, 25℃, not for cycle life) |
| Operating temperature range – charge | 0℃ to 45℃ (Tcm 45℃, Tcl 0℃) |
| Operating temperature range – discharge | -40℃ to 60℃ (Tdl -40℃, Tdm 60℃) |
| Allowable maximum surface temperature (Tmax) | Charge: 55℃ (recommended recharge release ≤45℃); Discharge: 70℃ (recommended re‑discharge release ≤60℃) |
| Storage temperature | 1 year: -20~25℃; 3 months: -20~45℃; 1 month: -20~60℃ |
| Humidity range | 0~60% RH (non‑condensing) |
| Internal resistance | ≤30mΩ (AC impedance, 1000Hz) |
| Weight | ≤49g |
| Cell dimensions | Diameter max 18.55mm; Height max 65.10mm (with heat‑shrink tube) |
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