All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(12684 products available)
Ready to Ship
Ready to Ship
Ready to Ship
The 18650 li ion battery is a medium-sized cylindrical rechargeable battery, often used in medium power devices like laptops and portable power tools where long battery life is needed. The lithium-ion composition allows the 18650 battery to be recharged many times with minimal capacity loss.
Polymer 18650 batteries use a pliable polymer gel electrolyte rather than liquid electrolytes. The electrolyte gel allows lithium polymer batteries to be packaged in thinner and lighter designs, though construction is more complicated. This type also provides good current density and safety features.
Protected batteries with built-in electrical regulation circuitry prevent damage from overcharging/discharging or short circuits, extending battery lifespan. Users less experienced with battery care can still safely use devices powered by 18650 protected batteries. However, compact devices with little space cannot accommodate protected batteries.
18750 batteries power mobile phones, laptops, tablets, digital cameras, and other portable electronics due to their energy density and rechargeability. They enable devices to operate longer between charges.
Their ability to store large amounts of energy makes them ideal for electric cars, electric bikes, and other mass transit systems that rely on rechargeable battery packs.
18650 cells can be assembled into larger home or industrial powerwall products that store solar or wind-generated energy for later use when generation is low, improving energy reliability.
Rechargeable batteries provide cordless drills, saws, and other power tools with the energy needed to work away from electrical outlets without frequent recharging.
They allow devices like pacemakers to function reliably by being rechargeable and long-lasting. Non-invasive devices can monitor health with battery-powered sensors.
Features include a nominal voltage of 3.7V and energy density of 250Wh/kg, allowing 2600mAh lithium-ion batteries to store significant charge. Dimensions are standardized at 18.6mm ± 0.15mm width and 65mm ± 0.5mm length due to uniformity. Manufacturing with cylindrical steel casings and chemical compositions of LiCoO2, NCA, or NMC helps achieve high densities. Though pocket-shaped polymer gel analogue competitors exist, 18650 form provides consistent energy.
Installing an 18650 lithium battery properly engages all components, enhancing performance. Following simple, systematic steps ensures optimum connectivity and functioning. First, the device's power source area is located and opened by using a screwdriver or another required tool to remove any covers or shields. Then, the old battery is identified and carefully unplugged or removed, noting the wire arrangement for future reference. With the area prepped, the new battery—the li ion 18650 2600mah battery—is positioned, ensuring the wire connection order matches the prior setup. It is then secured with either adhesive or fasteners as needed. Before closing the device, a power test is conducted. If functioning, the safe sealing of the device follows. Proper installation maximizes battery capabilities.
Proper maintenance and care of the 18650 lithium-ion battery are crucial for longevity and reliable performance. Routine checks include frequent visual and physical examinations for signs of external damage, such as warping or cracking in the battery case, that may impede functioning. The physical environment must be monitored as well; maintaining an ambient temperature between 20-25 degrees C safeguards against overheating or suboptimal performance in extreme heat or cold. Cleanliness is non-negotiable—the terminals must be free from dirt, dust, or corrosion to ensure an uninterrupted energy transfer.
To prevent overcharge and extension of battery life, usage of only the mandated charger is necessary. Balanced charging, which entails connecting to the charger until full and then detaching without immediate usage, fosters optimal cell maintenance. Likewise, balancing discharges by evenly utilizing battery energy across all cells avoids undue strain on any single cell.
Safe storage is critical in the absence of immediate use; a partial charge of around 50% in a cool, dry area shields the battery from potential deterioration. Application of harsh chemicals or abrasive materials on the battery casing is discouraged, as these substances may instigate detrimental alterations to the battery material.
Precautionary measures during the transportation of lithium batteries are paramount in mitigating associated risks. Such steps entail consistent packaging of batteries in sturdy containers manufactured from materials possessing the capacity to contain potential incendiary events emanating from the batteries and subsequent cushioning of packages with absorption substance. Batteries of the same kind and capacity must be united within the same shipment, whilst segregation of pack-linked batteries is imperative. To enable practitioners to identify hazards promptly, containers bearing labels indicating the presence of lithium must be employed.
A detailed inventory of all consignment components, inclusive of lithium-ion 18650 batteries, must be compiled and cross-referenced. Further, the transportation mode must be selected in adherence to regulatory stipulations, balancing expedition with safety. Collaboration with carriers proficient in handling lithium battery logistics is key. In instances of battery damage, immediate response actions, such as containing the incident and alerting first responders, are predetermined. Establishing emergency procedures further corroborates this.
To guarantee performance and reliability, various quality standards regulate lithium-ion batteries. Important certifications include the Underwriters Laboratories mark, which indicates safety preceded by thorough examination, and the International Electrochemical Commission standard, a venerable institution in quality benchmarking. The automotive industry's required IATF 16949 standard signifies quality as a precursor to commercialization.
IEC 62133 certification assures the battery can safely discharge electricity without danger. ISO 9001 mandates quality management system adherence to escape battery instability risks. EPTA-WS 001, an industry-derived standard, delivers an often-convenient baseline to remove uncertainty.
These voluntary standards, emerging from international accord and independent ingenuity, create a governance structure enabling innovation while protecting safety.
It is critical to protect the lithium-ion battery from impact. Such ways include placing such a battery away from flammable materials such fuels and storing it in a cool-dry area. Extreme heat should be avoided, such as direct sunlight and in vehicle, to avoid deterioration or explosion. The battery should be kept at a charge level between 20%-80% and periodically checked and charged to avoid self-discharge. A presence of moisture should also be avoided as this can lead to corrosion of the battery.
When handling lithium-ion batteries, protective gear handles such as safety glasses and thick gloves should be used; however, bare hands should not come in contact with the battery as this may lead to corrosion or damage. The battery should be lifted by the casing and not the terminals. While moving the battery, people should ensure that it is secured in a sturdy container to avoid displacement or fall during transportation.
A1: It is not advisable to mix batteries of different capacities, chemistries, or brands, as this can lead to imbalances, reduced performance, or even dangerous situations.
A2: Authentic 18650 batteries may be identified via markings, a uniform appearance, the procurement of data from reputable vendors and manufacturers, and adherence to quality standards.
A3: While modern chargers prevent overcharging, using an unregulated charger or leaving the battery in a charger beyond completion may cause risks.
A4: Battery life is increased by optimal temperature maintenance, balanced charging and discharging, utilization of the correct charger, and avoidance of extremes of state of charge.
A5: Yes, there are specific regulations and guidelines for safely packaging and labeling the batteries and adhering to hazardous materials regulations.
