• 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 [...]

Well you need to determine what features you want in a charger. Portability, waterproofing, built in indicators (digital or analog), short circuit protection, and the list goes on. One of the best features is de-sulphation, as it will extend the life of your battery and save you some money. Well worth the extra cost of [...]

Hi,
 
I have a Chinese electric Moped that I have been test riding for my own amusement since July. It has 5 batteries in a string for 60 volts to run a 2,000 watt brushless motor.
The batteries are called GreenSaver and are a silicone lead AGM type of battery, not the typical lead acid AGM type.
I [...]

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 [...]

Pioneer work with the lithium battery began in 1912 under Gilbert Newton Lewis (a famous American chemist) but it was not until the early 1970s when the first non-rechargeable lithium batteries became commercially available. Lithium is the lightest of all metals, has the greatest electrochemical potential and provides the largest energy density for weight. Lithium [...]

• 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 [...]

• 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 [...]

Match the output voltages of the charger to the battery type and the manufacturer’s recommended voltage, absorption, and float charging requirements. Pay attention as a mismatch can overcharge or undercharge your battery. There are always differences as the usage of the battery is designed to handle different parameters. These set up different requirements in the [...]

The lithium-polymer battery is different from conventional battery systems by the type of electrolyte used. The original design, dating back to the 1970s, uses a dry solid polymer electrolyte. This electrolyte resembles a plastic-like film that does not conduct electricity but allows ions to exchange (electrically charged atoms or groups of atoms). The polymer electrolyte [...]

What are the Limitations to the Nickel-Metal-Hydride Battery?
• Limited service life - the performance starts to deteriorate after 200-300 cycles if repeatedly deeply cycled.
• Relatively short storage of three years. Cool temperature and a partial charge slows aging.
• Limited discharge current - although nickel-metal-hydride is capable of delivering high discharge currents, heavy load reduces the battery’s cycle life.
• More [...]