LTO 18650 1500mAh Cell 2.4V 15000 Cycles -40℃ Charge 70% Capacity 3C 5C

LTO 18650 Cell for Extreme Conditions
The LTO18650-1500mAh is a cylindrical lithium titanate cell with a nominal voltage of 2.4V and capacity of 1500mAh. Using LTO on the anode and NCM on the cathode, this cell delivers exceptional cycle life (15,000 cycles at 80% retention), outstanding low temperature performance (charge down to -40°C with 70% capacity), and industry leading safety (passes nail penetration, crush, short circuit, and overcharge tests). Housed in a standard 18650 format (18mm diameter, 65.5mm height), it is ideal for electric vehicle batteries, energy storage, and cold climate applications.

Standard test environment

Test should be conducted with new cells within 30 days after shipment from our factory and which is not cycled more than fifty times before the test. Unless otherwise specified, all tests stated in this Product Specification are conducted at below condition:

The room temperature mentioned in this product specification is 25±5℃

Core Specifications
Nominal capacity is 1500mAh (1C at room temperature). Nominal voltage is 2.4V (average discharge voltage at 1C). Internal impedance is ≤20mΩ measured by AC 1kHz at 30% to 50% state of charge. Standard charge cut off voltage is 2.8V. Standard discharge cut off voltage is 1.5V. Maximum continuous charge current is 3C (4.5A). Maximum continuous discharge current is 5C (7.5A). Temperature rise during 3C charging is ≤20°C. Weight is ≤44 grams. Dimensions: diameter 18±0.3mm, height 65.5±0.3mm.

Cycle Life
Under standard test conditions (1C charge/discharge, 100% DOD at room temperature), the cell retains ≥80% of initial capacity after 15,000 cycles. At high temperature (45°C), it retains ≥80% after 3,000 cycles. This ultra long cycle life makes LTO ideal for daily deep cycling in EVs and stationary storage.

Rate Performance
Charge capacity at 3C rate is ≥95% of initial capacity. Discharge capacity at 5C rate is ≥95% of initial capacity. The cell handles high current without significant capacity loss, enabling fast charging and high power delivery.

Wide Temperature Performance
At -20°C, charge capacity is ≥85% and discharge capacity ≥82% of initial capacity. At -40°C, charge capacity is ≥70% and discharge capacity ≥60% of initial capacity. At 60°C, discharge capacity is ≥98% of initial capacity. Operating temperature range is -40°C to 60°C for both charge and discharge (with reduced power recommended below 0°C). Storage temperature range is -40°C to 35°C.

Storage and Self Discharge
After 28 days storage at room temperature, residual capacity is ≥90% and recoverable capacity ≥95% of initial. After 7 days at 60°C, residual capacity is ≥90% and recoverable capacity ≥95%. For long term storage, keep at 10% to 30% SOC in a clean dry room at -5°C to 28°C, recharge every 6 months.

Safety and Abuse Tolerance
The cell passes stringent safety tests: no explosion or fire under overcharge (1C to 4.2V or 1 hour), short circuit (10 minutes with ≤5mΩ external wire), dropping from 1.5m, heating to 130°C, crushing (200kN or 30% deformation), puncture (3mm nail at 25mm/s), seawater immersion (3.5% NaCl for 2 hours), low pressure (11.6kPa for 6 hours), and temperature cycling (-40°C to 85°C for 5 cycles). No leakage under over discharge (1C for 90 minutes).

Applications
This 18650 LTO cell is ideal for building battery packs for electric vehicles (EV, HEV, PHEV), electric buses, and heavy duty trucks. It suits low temperature energy storage for cold regions and outdoor equipment. It works for AGVs, golf carts, floor cleaning machines, power tools, and backup power systems. The standard 18650 format allows easy assembly into custom packs.

Physical Dimensions
Diameter D is 18±0.3mm. Height H is 65.5±0.3mm. The cylindrical steel case provides mechanical protection. Weight is ≤44 grams.