Batteries & Chargers

Battery chargers

Written by Gail Bjork

‘Smart’ battery chargers have more features than ‘universal’ chargers.

Battery ChargerOther than chargers made specifically for proprietary batteries, there are two main types of battery chargers: NiCad and NiMH. A charger should be compatible with the type of batteries you use.

Most NiMH battery chargers also charge NiCad batteries. But the reverse is not necessarily true. Do not charge NiMH batteries in a charger designed for use with NiCads, as the NiHM batteries may not fully charge. Whichever charger you buy, make sure it is designed to prevent battery overcharging.

Types of battery chargers

Universal battery chargers

A universal battery charger charges common types of NiMH and NiCad batteries such as AA, AAA, C, D and 9 Volt. They typically charge for a fixed length of time. They are good for household use but generally not recommended for batteries used in digital cameras.

Smart battery charger

A smart battery charger, also called an intelligent charger, provides just the right amount of charge for a battery. When batteries are fully charged, the unit automatically shuts off or goes into trickle charge mode. A trickle charge keeps a battery fully charged but will not overcharge it.

Car battery charger

Plugs into the cigarette lighter of your car.

About the author

Gail Bjork

Gail Bjork, who is passionate about digital photography, is the owner and editor of Digicamhelp.Gail is the author of three illustrated ebooks about digital photography. A number of her photos and digital photography related articles appear at other websites.In 2006, a series of her photos, People in the Louvre, were exhibited at the Underground Photo Gallery
in Iisalmi Finland. Eight of her photos taken in the Florida scrub are on permanent exhibition at Parrish Medical Center in Titusville, Florida.Gail served twelve years as an elected member of The School Board of Palm Beach County, Florida, one of the largest school districts in the U.S. She has also been the editor of a small town newspaper and a free-lance writer. Gail and her husband owned and ran several small businesses.