A customer called up to express his joy at receiving his new wheel chair batteries. He was so happy with the performance that he felt he needed to call us to tell of his experience.
We have three grade levels of batteries for wheelchairs and this particular guy purchased our top of the line “Chairman” brand [...]

Silicon-lead batteries are a newer technology that uses a silicon compound electrolyte. Designed to charge faster and work better in cold environments this technology has a lot of potential. Currently there is only one manufacturer of this type of battery. Greensaver Tech Co., Ltd. As this technology becomes more stable and a larger market share, [...]

• Linear discharge voltage prevents use of the full energy spectrum.
• Low energy density - typically holds one-fifth to one-tenth the energy of an electrochemical battery.
• Cells have low voltages - serial connections are needed to obtain higher voltages. Voltage balancing is required if more than three capacitors are connected in series.
• High self-discharge - the rate is considerably [...]

• Virtually unlimited cycle life - can be cycled millions of time.
• Low impedance - enhances load handling when put in paralleled with a battery.
• Rapid charging -Supercapacitors charge in seconds.
• Simple charge methods - no full-charge detection is needed; no danger of overcharge.

• Low energy density - poor weight-to-energy ratio limits use to stationary and wheeled applications.
• Cannot be stored in a discharged condition - the cell voltage should never drop below 2.10V.
• Allows only a limited number of full discharge cycles - well suited for standby applications that require only occasional deep discharges.
• Lead content and electrolyte make the battery [...]

• Inexpensive and simple to manufacture.
• Mature, reliable and well-understood technology - when used correctly, lead-acid is durable and provides dependable service.
• The self-discharge is among the lowest of rechargeable battery systems.
• Low maintenance requirements - no memory; no electrolyte to fill on sealed version.
• Capable of high discharge rates.

Lead-acid is the oldest rechargeable battery in existence. It has retained a market share in applications where newer battery chemistries would either be too expensive or the upkeep would be too demanding. There are simply no cost-effective alternatives for such applications as wheelchairs, scooters, golf carts, people movers and UPS systems.

• Lower energy density and decreased cycle count compared to lithium-ion.
• Expensive to manufacture.
• No standard sizes. Most cells are produced for high volume consumer markets.
• Higher cost-to-energy ratio than lithium-ion

• Very low profile - batteries resembling the profile of a credit card are feasible.
• Flexible form factor - manufacturers are not bound by standard cell formats. With high volume, any reasonable size can be produced economically.
• Lightweight - gelled electrolytes enable simplified packaging by eliminating the metal shell.
• Improved safety - more resistant to overcharge; less chance for [...]

For several years, nickel-cadmium batteries had been the only suitable battery for portable equipment from wireless communications to mobile computing. Nickel-metal-hydride and lithium-ion emerged in the early 1990s, fighting nose-to-nose to gain customer’s acceptance.
Today, lithium-ion is the fastest growing and most promising battery chemistry. The energy density of lithium-ion is typically twice that of the [...]