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Inquiries on different types of battery?


What style of battery is the best, Nickel Cadmium, Nickel-Metal-Hydride or Lithium-Ion? I also understand that Lithium-Ion has a couple styles and what are the advantages of each as well as disadvantages?


Hello Paul-
First, I'd like to make it clear that I only have a limited knowledge of batteries therefore, I've been provided extensive information by Cadex Electronics of Vancouver, BC, Canada; and we will only deal with those batteries that power Cordless Drills, Saws, etc.

1. Nickel Cadmium batteries are the most mature due to their being the first rechargeable battery.

- Advantages are: Fast and simple charge rates
- High number of charge/discharge cycles, many over 1000
- Good load performance
- Long shelf life
- Less costly per cycle

2. Nickel-Metal Hydride-Has high energy density-30 to 40% higher than NiCad

- Environmentally friendly
- Less prone to memory
- Higher Cost per cycle

3. Lithium-Ion-Very high energy density-Twice that of Ni-Cad

- Higher Cost
- Has no memory
- Has drawbacks in that requires protection circuit to maintain safe operation to maintain voltage and  current within safe limits
- Problem with transportation due to its instability
- Expensive to manufacture
- Not fully mature due to its infancy (chemicals are changing constantly).

Hope this helps and thanks for asking,


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