What are the Advantages to Nickel-Metal Hydride?
• 30-40% higher capacity than standard nickel-cadmium. Nickel-metal-hydride has potential for yet higher energy densities.
• Less prone to memory than nickel-cadmium - fewer exercise cycles are required.
• Simple storage and transportation - transport is not subject to regulatory control.
• Environmentally friendly - contains only mild toxins; profitable for recycling.

Research on the nickel-metal-hydride system started in the 1970s as a means of storing hydrogen for the nickel hydrogen battery. Today, nickel hydrogen is used mainly for satellite applications. Nickel hydrogen batteries are bulky, require high-pressure steel canisters and cost thousands of dollars per cell.
In the early experimental days of nickel-metal hydride, the metal hydride [...]

Charles from Montana Reviews the Battery Tender Jr. 12 Volt Charger
In 15 degree weather, I placed it [the Battery Tender Jr.] on a dead (0 Volts) battery and left it over night. The next day it was totally charged. Other small chargers that I’ve tried have taken days not hours.
I have two Battery Tender Jrs [...]

• Relatively low energy density.
• Memory effect - nickel-cadmium must periodically be exercised (discharge/charge) to prevent memory.
• Environmentally unfriendly - nickel-cadmium contains toxic metals. Some countries restrict its use.
• Relatively high self-discharge - needs recharging after storage

As more and more companies realize that is just as important to condition your batteries as well as charge them, we will see chargers taking advantage of this important feature to extend the life and usage of our precious laptops.
NewerTech has developed a charger/conditioner for your PowerBook®, iBook®, MacBook®, and MacBook Pro batteries. Their first [...]

As with anything, sooner or later you will have to replace your laptop battery charger. More often than not it is lost or damaged. There are many choices for you as you can go to the manufacturer, or purchase an off brand charger. There are pros and cons to both as with most things in [...]

USB (Universal Serial Bus) provides a 5 volt power supply, which is how it powers your computer peripherals that you plug into your computer. With this power it is possible to take advantage and charge standard NiMH batteries. There are also USB chargers that will charge your cell phone, iPod, Bluetooth headset… etc.

Among rechargeable batteries, nickel-cadmium remains a popular choice for two-way radios, emergency medical equipment and power tools. There is shift towards batteries with higher energy densities such as NiMH and Lithium-Ion using less toxic metals but alternative chemistries cannot always match the durability and low cost of nickel-cadmium.

Cindy from Maine reviews the SE-2352 Schumacher Battery Charger
When I dumped my ex, I started looking at some of the stuff that he took with him so I could handle rural life without him.
There is nothing more irritating than getting stranded because of a dead battery! I’ve only had to use it a couple times, [...]

Advanced Analogic Technologies Incorporated (don’t say that to quick) has announced the AAT3663. This chip is in a new line of 1A linear battery charger integrated circuits that are capable of charging 2 Lithium-ion cells in series. It has been designed to work through an AC adapter or through a USB port. It uses their [...]