Lithium ion (Li-ion) battery packs are the preferred power source for handheld devices due to their small size and light weight. Li-ion battery packs have no “memory effect” (also known as voltage depression) , common in older cell chemistries. With a higher energy density than Nickel-based battery packs and a low self discharge rate, Li-ion battery packs have revolutionized the design of portable devices that were previously restricted by power source size, weight, and run-time limitations.

Due to the more volatile nature of Lithium versus Nickel battery packs and high energy density every Lithium battery pack is designed with special attention to safety considerations, from the design phase to volume manufacturing.

Lithium-ion is a low maintenance battery, an advantage that most other chemistries cannot claim. There is no memory and no scheduled cycling is required to prolong the battery's life. In addition, the self-discharge is less than half compared to nickel-cadmium, making lithium-ion well suited for modern fuel gauge applications. Lithium-ion cells cause little harm when disposed.

Despite its overall advantages, lithium-ion has its drawbacks. It is fragile and requires a protection circuit to maintain safe operation. Built into each pack, the protection circuit limits the peak voltage of each cell during charge and prevents the cell voltage from dropping too low on discharge. In addition, the cell temperature is monitored to prevent temperature extremes. The maximum charge and discharge current on most packs is limited to between 1C and 2C. With these precautions in place, the possibility of metallic lithium plating occurring due to overcharge is virtually eliminated.

Aging is a concern with most lithium-ion batteries. Some capacity deterioration is noticeable after one year, whether the battery is in use or not. The battery frequently fails after two or three years. It should be noted that other chemistries also have age-related degenerative effects. This is especially true for nickel-metal-hydride if exposed to high ambient temperatures. At the same time, lithium-ion packs are known to have served for five years in some applications.

Manufacturers are constantly improving lithium-ion. New and enhanced chemical combinations are introduced every six months or so. With such rapid progress, it is difficult to assess how well the revised battery will age.

Storage in a cool place slows the aging process of lithium-ion (and other chemistries). Manufacturers recommend storage temperatures of 15°C (59°F). In addition, the battery should be partially charged during storage. The manufacturer recommends a 40% charge.

The most economical lithium-ion battery in terms of cost-to-energy ratio is the cylindrical 18650 (18 is the diameter and 650 the length in mm). This cell is used for mobile computing and other applications that do not demand ultra-thin geometry. If a slim pack is required, the prismatic lithium-ion cell is the best choice. These cells come at a higher cost in terms of stored energy.

Lithium Ion Battery Advantages

  • High energy density - potential for yet higher capacities.
  • Does not need prolonged priming when new. One regular charge is all that's needed.
  • Relatively low self-discharge - self-discharge is less than half that of nickel-based batteries.
  • Low Maintenance - no periodic discharge is needed; there is no memory.
  • Specialty cells can provide very high current to applications such as power tools.

Limitations of Li-Ion Batteries

  • Requires protection circuit to maintain voltage and current within safe limits.
  • Subject to aging, even if not in use - storage in a cool place at 40% charge reduces the aging effect.
  • Transportation restrictions - shipment of larger quantities may be subject to regulatory control. This restriction does not apply to personal carry-on batteries. (See last section)
  • Expensive to manufacture
  • Not fully mature - metals and chemicals are changing on a continual basis.

Restrictions on Shipment of Lithium-ion Batteries

Anyone shipping lithium-ion batteries in bulk is responsible to meet transportation regulations. This applies to domestic and international shipments by land, sea and air.

Lithium-ion cells whose equivalent lithium content exceeds 1.5 grams or 8 grams per battery pack must be shipped as "Class 9 miscellaneous hazardous material." Cell capacity and the number of cells in a pack determine the lithium content.

Exception is given to packs that contain less than 8 grams of lithium content. If, however, a shipment contains more than 24 lithium cells or 12 lithium-ion battery packs, special markings and shipping documents will be required. Each package must be marked that it contains lithium batteries.

All lithium-ion batteries must be tested in accordance with specifications detailed in UN 3090 regardless of lithium content (UN manual of Tests and Criteria, Part III, subsection 38.3). This precaution safeguards against the shipment of flawed batteries.

Cells & batteries must be separated to prevent short-circuiting and must be packaged in strong boxes

Applications of Lithium-Ion Battery Packs

Portable Medical Equipment

  • Infusion pumps
  • Portable X-ray systems
  • Respirators
  • Defibrilators
  • Surgical tools
  • Patient monitoring devices
  • Motorized beds and carts
  • Muscle stimulators

Handheld Electronics

  • Handheld printers
  • Measurement devices
  • Data collection devices
  • Gas detection systems
  • Image capture devices

Safety and Security

  • Night vision cameras
  • Surveillance equipment
  • Thermal imaging devices
  • Wearable gas detection systems
  • Personal alarms

Military

  • Ruggedized Portable communications equipment
  • Ruggedized Computing devices
  • Power Tools and Appliances
  • Measuring equipment and Lasers
  • Construction/Assembly equipment

Communications

  • Mobile Phones
  • Mobile Electronic Devices
  • Mobile industrial Computers

News »Battery Packs

  • GlobTek announces the release of BS1200C1425001S1PCMW, an industry standard package size for water metering applications. The battery pack features a 3.6V operating voltage and 1200mAh current capacity. Lithium-thionyl chloride (Li-SoCl2) battery pack features 3.6V Operating voltage and 1200mAh capacity in a small 1/2AA form factor with Molex(2695) 22-01-3027 (2 pin) Termination, BS1200C1425001S1PCMW
  • BL1880F6835661S5PG9x is an addition to the growing family of GlobTek’s IEC 62133 Certified High-Capacity Battery Packs with the host of Safety, Monitoring and Connecting features.

Beginning May 1st,... IEC62133 Certified Lithium Polymer (Li-Po) 3.7V, 9400mAh Battery Pack Features High Capacity and Integrated Connector!
  • GlobTek’s Battery Packs Feature Multi-Chemistry Designs and Latest IATA 56th Edition Compliance!

Power quality has emerged as a much discussed topic within the last ten years and is anticipated to remain... GlobTek’s Lithium Polymer (Li-Po), Nickel Cadmium (Ni-Cad) and Lithium Ion (Li-Ion) Battery Packs are Updated to IATA Dangerous Goods Regulations 56th Edition!
  • GlobTek’s Wearable Curved 3.7 @ 28mAh Li-Po Battery Pack Designed to Meet UL 1642 Cell Approval!
A leader in the design, integration, and manufacture of custom battery packs and battery chargers, GlobTek... Wearable Conformal Flexible Lithium Polymer (Li-Po) Battery Packs from GlobTek are Now Available in Unlimited Sizes and Shapes, Plus Either Meet or are Designed to Meet UL 2054, UL 1642 Cell Certification, IEC-62133 and a CE Mark which complies with 2004/108/EC Electromagnetic compatibility, including EN61000-6-1:2007, EN61000-6-3:2007!
  • GlobTek’s BL2600C1865001S2PRML Battery Pack in 1S2P Configuration represents latest addition to rugged high-capacity Li-Ion / Cylindrical Battery family with UL 1642 Approved Cells and a CE Mark which... Li-Ion Cylindrical Battery Pack from GlobTek, a 3.7 VOLTS @ 5200mAh BL2600C1865001S2PRML Now Features UL 1642 Cell Approval and a CE Mark which complies with 2004/108/EC Electromagnetic compatibility, including EN61000-6-1:2007, EN61000-6-3:2007!
  • GlobTek’s BL0105F2635161S1PCAT Battery Pack represents latest addition to miniature iPod nano - compatible high-capacity Li-Ion / LiPo (Polymer) Battery family with UL 2054 Approved Pack and a IEC/EN... Miniature Li-Ion Polymer Battery Pack BL0105F2635161S1PCAT, 3.7V @ 105mAh Now Features UL 1642 Cell Approval and UL2054 Pack Approval (pending), as well as IEC/EN 62133 1st & 2nd Edition Certification!
  • GlobTek’s BL1800P0639602S1PPLB Battery Pack represents latest addition to rugged high-capacity Li-Ion / Prismatic Battery family with UL 1642 Approved Cells and a CE Mark which complies with 2004/108/EC... Li-Ion Prismatic Battery Pack BL1800P0639602S1PPLB, 7.4V @ 1800mAh Now Features UL 1642 Cell Approval and a CE Mark which complies with 2004/108/EC Electromagnetic compatibility, including EN61000-6-1:2007, EN61000-6-3:2007!!
  • GlobTek’s 2GL-523450-G2107(R) Battery Pack represents latest addition to a complete charging solution (Battery Pack, Charger, Multi-bay Charging Cradle), featuring UL 1624 approved high capacity polymer... Li-Ion Polymer Battery Pack 2GL-523450-G2107(R), 3.7V @ 2000mAh Now Features UL 1642 Cell Approval and is ROHS complient!
  • GlobTek’s BL1950P1034502S1PQPA Battery Pack in 2S1P Configuration represents latest addition to rugged high-capacity Li-Ion / Prismatic Battery family with UL 1642 Approved Cells and a CE Mark which... Li-Ion Prismatic Battery Pack from GlobTek, a 7.4V / 1950mAh BL1950P1034502S1PQPA Features UL 1642 Cell Approval and is designed to meet CE Mark which complies with 2004/108/EC Electromagnetic compatibility, including EN61000-6-1:2007, EN61000-6-3:2007!
  • GlobTek’s BL1400C1850001S2PRML Battery Pack in 1S2P Configuration represents latest addition to rugged high-capacity Li-Ion / Cylindrical Battery family with UL 1642 Approved Cells and a CE Mark which... BL1400C1850001S2PRML, Li-Ion Cylindrical Battery Pack from GlobTek, a 3.7 VOLTS @ 2800mAh now Features UL 1642 Cell Approval and a CE Mark which complies with 2004/108/EC Electromagnetic compatibility, including EN61000-6-1:2007, EN61000-6-3:2007!
  • GlobTek’s BL2200F6034501S2PPML Battery Pack in 1S2P Configuration represents latest addition to rugged high-capacity Li-Ion / Prismatic Battery family with UL 1642 Approved Cells and a CE Mark which... Li-Ion Prismatic Battery Pack from GlobTek, a 3.7 VOLTS @ 2200 mAh BL2200F6034501S2PPML Now Features UL 1642 Cell Approval and a CE Mark which complies with 2004/108/EC Electromagnetic compatibility, including EN61000-6-1:2007, EN61000-6-3:2007!
  • GlobTek’s BL2600C18654S1PG2646 Battery Pack represents latest addition to rugged high-capacity Li-Ion / Polymer Battery family with UL 1642 Approved Cells and a CB Certification to 62133:2012 (Second... GlobTek’s 14.8V @ 2,600mAh Li-Ion Battery Pack is Now CB Certified to 62133:2012 2nd Edition!
  • Text us your inquiry
    Can we help you?
    Can we help you?