OID IMR26700-40E-1701 4.0Ah 8A Max Discharge Wide Temperature Range Cylindrical

The OID IMR26700-40E-1701 is a high-performance cylindrical lithium ion rechargeable battery developed and manufactured by Shenzhen Jianheng Technology Co., Ltd. This model delivers a rated capacity of 4.0Ah and nominal voltage of 3.7V, providing 14.8Wh of energy in a compact 26700 form factor. Designed for demanding applications, it supports a maximum continuous discharge current of 8A (2C) and operates reliably across a wide temperature range from -20°C to 60°C during discharge.

• High energy density with 4.0Ah rated capacity and 14.8Wh rated energy
• Robust discharge performance with 2C (8A) maximum continuous discharge current
• Wide operating temperature range: charge 0°C to 55°C, discharge -20°C to 60°C
• Low internal resistance: ACIR ≤25mΩ, DCIR ≤50mΩ for high efficiency
• Excellent rate capability: 0.5C ≥99%, 1C ≥95%, 2C ≥90% capacity retention
• Proven safety with crush, heating, overcharge, short circuit, and drop test compliance
• Reliable quality with clear barcode traceability and strict QC inspection

After standard charge, discharge at 0.5C, 1C, and 2C to 2.70V. Capacity retention vs. initial capacity: 0.5C ≥99%, 1C ≥95%, 2C ≥90%.

After standard discharge, charge at 0.2C, 0.33C, 0.5C to 4.20V, rest 10 min, discharge at 0.5C to 2.70V. Discharge capacity vs. initial capacity: after 0.2C charge ≥93%, after 0.33C charge ≥88%, after 0.5C charge ≥80%.

After standard charge, store at -20°C for 24h, then discharge at 1C (4A) to 2.70V at -20°C. Capacity retention ≥70% of initial capacity.

After standard charge, store at 55°C for 5h, then discharge at 0.5C (2A) to 2.70V at 55°C. Capacity retention ≥95% of initial capacity.

The IMR26700-40E-1701 has passed rigorous safety tests including crush, heating, overcharge, short circuit, overdischarge, low pressure, temperature cycling, drop test, and sea water immersion. All tests are conducted with forced ventilation and explosion-proof measures. Criteria: no fire, no explosion, and no leakage where applicable.

• Portable power tools
• Electric bicycles and scooters
• Energy storage systems
• Medical devices
• Industrial equipment
• Consumer electronics
• UPS backup systems
• Solar lighting and street lamps

Each case contains 40 cells, with 2 cases per box (total 80 cells per box). Packaging complies with national and industrial standards. Anti-shock measures are applied inside boxes. Transport with care: avoid sudden starts/brakes, protect from rain, snow, liquid, and mechanical damage. Do not transport with flammable, explosive, or corrosive materials.

• Use CC-CV charging method
• Charge current ≤2A (0.5C)
• Charge voltage ≤4.25V
• Charge within 0°C to 55°C
• Reverse charging strictly prohibited

• Discharge current ≤8A (2C)
• Discharge within -20°C to 60°C
• Prevent over-discharge beyond 2.65V
• Use protection circuitry for over-discharge protection

• Store at 40%~60% SOC for long-term storage
• Temperature: <1 year: -20~25°C; <3 months: -20~45°C
• Charge every 3 months to maintain performance
• Avoid condensation, keep in cool and dry place

Shenzhen Jianheng Technology Co., Ltd. provides a warranty period of six months from the date of delivery for quality issues confirmed to be caused by product defects. For special applications such as device design, protection circuits, high current, or fast charging, please consult Jianheng beforehand. The company assumes no responsibility for problems arising from operation violating safety rules, or from circuit, pack, and charger combinations, or from defects during customer assembly after shipment.

Shenzhen Jianheng Technology Co., Ltd. (trademark: OID) is a professional manufacturer of cylindrical lithium ion batteries. With advanced production facilities and strict quality control, Jianheng delivers reliable and high-performance battery solutions for global customers. The company is committed to innovation, safety, and customer satisfaction.

Contact Information:
Shenzhen Jianheng Technology Co., Ltd.
Address: 20F 2# Bld. Zhenhuan Rd. Pingshan, Shenzhen, China
Tel: 0086 137 2555 9416
Email: alan@liion-batt.com