-40°C to 85°C 18650 3.6V 2900mAh Wide Temperature Lithium Battery

Model: 18650
Nominal Voltage: 3.6V
Nominal Capacity: 2900mAh
Minimum Capacity: 2800mAh
Wide Temperature Range: -40°C to 85°C (discharge)
Wide Applications: outdoor special equipment， GPS， military equipment， vehicle-mounted devices， etc.

Name: -40°C to 85°C 18650 3.6V 2900mAh Wide Temperature Lithium Battery
Brand: iBorn Battery---Custom Lithium Battery Manufacturer Since 2011
Availability: InStock
Rating: 5 (1 reviews)

Description

Power Positioning and Target User Groups
This 36V 2900mAh wide-temperature battery pack is designed as a dedicated power source for OEM manufacturers, system integrators, and engineering teams developing outdoor equipment, GPS terminals, mobile monitoring systems, and distributed IoT devices. As a reliable lithium ion battery, it supports long-term unattended operation in environments where temperature fluctuation, vibration, and power instability are constant challenges. Typical users include vehicle electronics engineers, outdoor system operators, and equipment maintenance teams who require consistent DC output without frequent battery replacement. Unlike consumer battery packs, this module is delivered as an integrated energy unit, allowing direct installation into sealed enclosures, vehicle power compartments, or control cabinets, simplifying system wiring and reducing field assembly risks.

Electrical Design and Core Performance Parameters
The battery pack is built with high-consistency 18650 li-ion lithium battery cells arranged to provide a nominal output of 36V with a rated capacity of 2900mAh. It is optimized for stable continuous discharge and controlled peak current output to support communication modules, navigation devices, remote sensors, and embedded controllers. The extended operating temperature range from -40 °C to 85 °C ensures stable electrochemical behavior in both extreme cold and high-heat environments. The integrated protection system manages overcharge, over-discharge, over-current, and short-circuit conditions to safeguard both the power source and connected devices. Internal cell balancing technology maintains uniform voltage distribution across all series connections to extend service life and preserve discharge consistency.

Industry Application Value and System-Level Benefits
In outdoor and mobile power systems, voltage stability directly impacts equipment uptime and signal reliability. This wide-temperature rechargeable lithium ion battery pack provides standardized 36V output to simplify power system architecture across multiple industries. It eliminates the need for on-site multi-cell wiring and reduces the risk of uneven cell aging. For customers working with lithium-ion battery manufacturers, the pack offers predictable electrical behavior, simplified certification integration, and reduced after-sales maintenance workload. Its ability to operate across extreme temperatures allows deployment in cold zones, high-altitude regions, enclosed vehicle cabins, and unconditioned outdoor cabinets without sacrificing output stability.

Item	Specifications	Remark
Model No.	18650-2900
Nominal Voltage	3.6V
Nominal Capacity	2900mAh	@0.2C standard charge&discharge
Dimensions	18.5*65.5mm max	Diameter*Height
Cycle Life	≥500 times	(25 ℃，0.5 C / 1C )
Charge Method	CC/CV
Charge Cut-off Voltage	4.2V
Discharge Cut-off Voltage	2.75V
Standard Charge Current	0.56A
Standard Discharge Current	0.56A
Max Continuous Charge Current	1.4A
Max Continuous Discharge Current	10A
Operating Temperature Range	Charge: -20~60℃	-20-10＜T≤0℃: 0.1C to 4.1V, 0＜T≤10℃: 0.2C to 4.2V, 10＜T＜60℃: 0.5C to 4.2V
Operating Temperature Range	Discharge: -40~85℃	0＜T≤85℃: 2.75V, -20＜T≤0℃: 2.5V, -40≤T≤-20℃: 2.0V
Storage Temperature Range	-20~25℃	0 - 12 months
	-20~45℃	0 - 6 months
	-40~60℃	0 - 3 months
	-40~80 ℃	Within 30 days
Internal Resistance	≤18mΩ
Weight	Approx. 44g

Good Rate Performance: Capable of continuous 10A discharge, performing excellently at room temperature.
Wide Temperature Operating Range: Suitable for a wide working temperature range from -40℃ to 85℃.
High and Low-Temperature Performance: At -40℃, it can still release over 70% of its capacity at a 0.2C discharge rate.
Excellent High-Temperature Storage Performance: Exhibits outstanding storage performance in high-temperature environments (80℃).
Low-Temperature Discharge Performance: Maintains excellent low-temperature discharge performance even after high-temperature storage.
Superior Cycle Performance: Demonstrates good cycle life and stable performance.

Bluetooth speaker， flashlight， solar light，intelligent door lock， gps tracker， parking device， medical device， POS machines， power tool， garden tool， sweeper， electric scooter， electric bike， outdoor power supply， etc

Use Scenarios

Outdoor Monitoring and Remote Sensor System Operators
Operators responsible for weather stations, environmental monitoring platforms, and security sensor networks rely on li-ion lithium battery power solutions to ensure continuous operation under extreme climate conditions. The wide-temperature capability supports stable discharge during winter freezing periods and summer heat, preventing data interruption and device reset caused by unstable battery performance.

Vehicle-Mounted Equipment Integration Engineers
Engineers designing power systems for vehicle-mounted GPS terminals, mobile communication units, and transportation monitoring devices depend on rechargeable lithium ion battery packs for vibration resistance, stable discharge curves, and predictable output under fluctuating load conditions. The 36V architecture supports unified power distribution for control units, wireless modules, and positioning systems installed inside vehicles.

IoT Gateway Developers and System Builders
Developers of edge computing gateways, outdoor network transmission equipment, and distributed IoT control nodes use lithium ion battery wholesale power packs to support long operational cycles without frequent field maintenance. The standardized electrical behavior simplifies power budgeting and supports reliable long-term data transmission across wide deployment areas.

FAQ

What is the operating temperature range of this battery pack?
It operates reliably between -40 °C and 85 °C under standard working conditions.

Does this battery pack include built-in electrical protection?
Yes, it includes overcharge, over-discharge, over-current, and short-circuit protection.

Can this battery be customized for other voltages or capacities?
Yes, voltage level, capacity, wiring harness, and enclosure structure can be customized.

What is the normal production lead time?
Typical production lead time is 10–20 working days depending on order volume.

Is technical documentation available for system integration?
Yes, wiring diagrams and electrical specifications are provided for integration support.

Brand Introduction

Shenzhen iBorn Energy, founded in 2011, is a national high-tech enterprise which specializes in the R&D， production and sales of lithium polymer batteries， lithium ion batteries， lithium iron phosphate (LiFePO4) batteries， and lithium thionyl chloride(ER) batteries. Our products are widely used in Consumer Electronics，Internet of Things， Smart Home， Medical， Solar and Renewable Projects，Recreational Vehicles，Marine，Golf Carts， Low-speed Vehicles， Household and Commercial Energy Storage，and have obtained CE，RoHS，Reach，UN38.3，IEC62133，CB，UL，MSDS certifications， etc.

iBorn moves on by providing high-quality batteries with good prices to meet different energy needs. We have experienced R&D， production and quality management teams. From raw material procurement， to production， testing， sales and after-sales service， all steps have been controlled by a strict quality management system. Our factory has passed ISO9001，IS014001and Intertek audit. With the advantages in price， quality and service， we have established long-term and stable cooperative relationships with many well-known brands. We believe that iBorn can be your best battery supplier!

-40°C to 85°C 18650 3.6V 2900mAh Wide Temperature Lithium Battery

Model: 18650
Nominal Voltage: 3.6V
Nominal Capacity: 2900mAh
Minimum Capacity: 2800mAh
Wide Temperature Range: -40°C to 85°C (discharge)
Wide Applications: outdoor special equipment， GPS， military equipment， vehicle-mounted devices， etc.

Description

Certificates

ISO19001

CB certificate

CE certificate

RoHS certificate

UN38.3 certificate

Production Process

Exhibitions

Brand Introduction

CONTACT US

-40°C to 85°C 18650 3.6V 2900mAh Wide Temperature Lithium Battery

Model: 18650Nominal Voltage: 3.6VNominal Capacity: 2900mAhMinimum Capacity: 2800mAhWide Temperature Range: -40°C to 85°C (discharge)Wide Applications: outdoor special equipment， GPS， military equipment， vehicle-mounted devices， etc.

Description

Certificates

ISO19001

CB certificate

CE certificate

RoHS certificate

UN38.3 certificate

Production Process

Exhibitions

Brand Introduction

CONTACT US

Model: 18650
Nominal Voltage: 3.6V
Nominal Capacity: 2900mAh
Minimum Capacity: 2800mAh
Wide Temperature Range: -40°C to 85°C (discharge)
Wide Applications: outdoor special equipment， GPS， military equipment， vehicle-mounted devices， etc.