DIFFERENCE BETWEEN NI-CD AND NI-MH BATTERY?
Both nickel-cadmium and NiMH batteries are rechargeable.The greatest distinction between the 2 is that NIMH batteries provide higher energy densities than NiCads. In other words, pound for pound, NIMH delivers just about 30 min additional capacity than its nicad counterpart. What this interprets into is enhanced runtime from the battery with no further bulk. NIMH additionally offers another major advantage: nickel-cadmium batteries tend to suffer from what's referred to as a "memory effect". What this suggests is that once a ni-cad battery is merely partly discharged before charging, the battery "forgets” that it has the capability to additionally discharge all the way down.
For example, if you, on a daily basis, fully charge your battery and then use solely 40%of its capability before following recharge, eventually the battery will become unaware of its additional hour capacity that had remained unused. Your battery can stay functional, however solely at 40% of its original capability.
The way to avoid the dreadful "memory effect" is to completely cycle your nickel-cadmium battery a minimum of once a month. In other words, totally discharge your battery then fully charge it.
Batteries are often discharged by permitting the device to run on the battery till it ceases to operate. This may insure your battery remains healthy. Nickel-metal hydride batteries are "memory free" - they don't suffer from this affliction. Thus, if you've got a NI-Mh battery, the only time it's necessary to cycle it's throughout its initial use and once in a while during storage. This is often done to "exercise" the battery and convey it up to full capability.
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