NiMH (nickel - metal hydride) batteries
are extremely earth-friendly products. You should really consider replacing
most of your battery needs with NiMH batteries.
NiMH (nickel-metal hydride) batteries are rechargeable and do not suffer
from "memory effect" unlike NiCd (nickel-cadmium) batteries.
NiCd batteries had to be completely discharged before recharging or the
NiCd batteries would suffer a drop in voltage at the point the battery
began recharging. The NiCd battery would "remember " that point
where the battery began recharging and would cause problems.
NiCd batteries contain cadmium, which is
a dangerous toxic heavy metal. Cadmium can cause severe pollution to water,
air and land if incinerated or buried by releasing toxic gas. These batteries
need to be recycled!
Recharging the batteries often and not letting the batteries fully drain
can extend the life of NiMH batteries. NiMH batteries can typically be
recharged between 500 - 1000 times depending on their use and how much
each battery is drained before recharging.
The one disadvantage (you knew there had to be one, right?) of NiMH batteries
is they discharge at a significant rate: about 5-10% the first day, then
leveling off between 0.5 - 1% per day at room temperature. NiMH rechargeable
batteries are excellent for digital cameras, MP3 players, portable game
systems, PDAs, portable CD players and toys because these are high-drain
devices that will need to be recharged a lot.
Alkaline batteries may seem cheaper at first glance, but since
you can only use them once and then throw away (please recycle), alkaline
batteries are actually quite expensive once you add up all of the times
you have to throw out batteries and buy more instead of recharging them
over and over again several hundred times.
Because of their less-harsh compounds towards the environment, lack of
a "memory effect" and the capability to recharge hundreds of
times (instead of buying hundreds of alkaline batteries), NiMH rechargeable
batteries should be used for most applications in your home or on the
road. They are real money-savers and help protect the environment by producing
less trash in our landfills.
to Topics Page