Rechargeable Battery Packs
House of Batteries offers rechargeable battery packs in a variety of chemistries and configurations. We provide innovative, high performance battery solutions for a broad range of industries and applications. Our team has the expertise to create custom rechargeable battery packs that meet your unique requirements, drawing on 200-plus years of combined battery design experience to deliver dependable, cost effective rechargeable battery packs for any application.
Rechargeable Lithium Batteries
Rechargeable lithium batteries are popular for a wide array of applications because they provide excellent energy density, slow loss of charge when not in use, and do not experience “memory effect” in charging. They can be manufactured in myriad shapes and sizes to fit the devices they power, and are much lighter than comparable, non-lithium rechargeable batteries.
A number of different lithium chemistries are available, each with unique performance, cost, and safety characteristics. Contact House of Batteries for assistance in finding the correct chemistry for your specific application.
Lithium ion (Li-ion) rechargeable battery packs are increasingly popular due to their greater energy density—up to twice that of nickel- and lead-based chemistries—and low self-discharge rates, as well as ever-improving technologies that continue to make them safer and less expensive than other rechargeable battery types. Lithium ion rechargeable battery packs are commonly used in consumer electronics, electric vehicles, military/aerospace equipment, and many other applications.
Other Rechargeable Battery Pack Chemistries
Lithium Polymer Rechargeable Battery Packs
In many ways, lithium polymer rechargeable battery technology is similar to Li-ion. The key difference between the two is their packaging—instead of the steel or aluminum cans used for Li-ion batteries, lithium polymer cells are typically housed in foil-like pouches. This allows for packaging flexibility, and can provide lower costs and safer operation.
Lithium polymer cells are available in different, custom-tailored configurations that can deliver longer run times or higher discharge rates. Cells as thin as a credit card are possible.
Because of lithium’s inherent volatility, and lithium polymer’s generally high energy density, every lithium polymer battery and cell requires a battery management circuit to control and monitor its upper and lower voltage thresholds during charge and discharge. House of Batteries designs and thoroughly tests the battery management system of each lithium polymer battery pack we assemble, to guarantee optimum safety and performance.
Cell phones, tablet computers, e-readers, and other small one- or two-cell consumer electronics applications commonly use lithium polymer battery packs.
Because all lithium primary, lithium ion, and lithium polymer cells and batteries are regulated for transportation, the cost of working with these technologies is increased.
Lithium polymer cell technology is in a constant state of improvement, making ever smaller, lighter, and more powerful cells possible.
Sealed Lead Acid Rechargeable Battery Packs
Sealed lead acid batteries (SLA batteries) are available at low initial cost and are easy to maintain, making them ideal for a wide range of rechargeable battery applications. Unlike other chemistries, such as lithium ion or lithium polymer, SLA batteries don’t require sophisticated battery management circuitry, and are not as heavily regulated for transportation.
SLA batteries do present a few disadvantages. In addition to being larger and heavier than many other chemistries, most SLAs won’t take a fast charge well, and don’t perform well at low temperatures. SLAs also tend to lose their charge quickly if stored at higher temperatures.
An alternative SLA variation that is an exception to the above is “pure lead” technology, such as EnerSys Cyclon, which is capable of fast charging and performs well at lower temperatures. Pure lead batteries exhibit much better charge retention and recovery after long periods of storage (1-2 years) and longer calendar life (5-8 years). Pure lead SLAs are popular for medical and defense applications.
SLAs have the lowest energy density of any rechargeable battery chemistry. In instances where size and weight aren’t critical factors, and where costs must be kept to a minimum, SLAs are an ideal solution.
SLA batteries are also uniquely suited to stationary and standby applications, such as uninterruptible power supplies and emergency lighting, where reliability and long working life are a must. And, because SLA cells are predictable and easy to maintain, they’re commonly used for medical devices and electric wheelchairs requiring high power.
Nickel Cadmium Rechargeable Battery Packs
Nickel cadmium (NiCd) is one of the oldest battery chemistries. Despite the development of numerous new chemistries in recent years, nickel cadmium remains a popular and reliable technology for rechargeable batteries. When properly maintained, NiCd batteries can last for thousands of cycles.
Cadmium is classified as a heavy metal; as such, the use of NiCd batteries is restricted throughout Europe. Additionally, these batteries must be recycled properly.
Nickel cadmium batteries used in portable applications are usually either spiral wound cylindrical cells or button cells. Larger plate NiCd wet cell batteries are often used in aircrafts and long-term stationary applications.
Nickel Metal Hydride Rechargeable Battery Packs
Steady increases in nickel metal hydride (NiMH) cell performance has made this chemistry a popular choice for small, lightweight, portable electronic applications. Over the past few years, however, lithium technologies have significantly impacted NiMH’s market share.
Unlike lithium ion, lithium polymer, and other chemistries, NiMH batteries do not require sophisticated battery management circuitry to maintain their performance. Additionally, NiMH rechargeable batteries are not as heavily regulated for transport as lithium cells.
NiMH batteries provide 30-50% more energy capacity than same-size NiCd cells. They are less prone to the “memory effect” that plagues NiCd batteries, as well. And, compared to lithium ion and lithium polymer batteries, NiMH cells are a far more economical choice.
However, NiMH batteries do have their drawbacks. They typically only yield about 500 cycles, and charging is more complex than with NiCd. NiMH batteries also require passive safety devices to protect against short circuits and overheating. And, compared to NiCd chemistries, NiMH tends to lose its charge about twice as fast.
Contact House of Batteries to learn more about our custom rechargeable battery pack manufacturing capabilities.