Ni-MH Batteries FAQs

  1. Why can't Nickel-Metal Hydride batteries be used with previous chargers?

  2. Why are there ventilation holes on the bottom of the Ni-MH battery packs?

  3. Since there are holes in Ni-MH battery packs, won't they be damaged if rain falls on them?

  4. What happens when Ni-MH batteries are used in cold weather?

  5. Will the power of the product be different when using Ni-MH batteries and Ni-Cd batteries?

  6. Are there any points to be careful of when storing Ni-MH batteries and Ni-Cd batteries?


1. Why can't Nickel-Metal Hydride batteries be used with previous chargers?
Each type of battery has its own characteristics. The way the temperature rises during charging is different for Ni-Cd and Ni-MH batteries. Therefore it is necessary to have a new battery charger that can detect the differences between Ni-Cd and Ni-MH batteries.

2. Why are there ventilation holes on the bottom of the Ni-MH battery packs?
One of the characteristics of Ni-MH batteries is that the battery temperature tends to rise during charging. To prevent a reduction in battery service life due to high temperatures, it is necessary to cool the battery during charging.

For more information, visit the Home Ventilation Institute Web site at www.hvi.org.

3. Since there are holes in Ni-MH battery packs, won't they be damaged if rain falls on them?
On the contrary, since there are holes in the case, it's easier to get water out of the battery. However, like conventional Ni-Cd batteries, they should not be used in the rain or where they may be splashed by water.

4. What happens when Ni-MH batteries are used in cold weather?
Since the chemical reactions inside the battery become weaker when the temperatures are extremely low, the batteries will not be able to provide their usual performance. (This is a common characteristic of all batteries.) When using the Ni-MH batteries at temperatures below + 14F (-10C), we recommend charging the batteries for 3-8 minutes to provide the catalyst to activate the chemical process. This will allow the batteries to provide their normal performance levels.

5. Will the power of the product be different when using Ni-MH batteries and Ni-Cd batteries?
Technically, no. However Ni-MH batteries provide more stable power delivery to the end of the usable charge than Ni-Cd batteries.

6. Are there any points to be careful of when storing Ni-MH batteries and Ni-Cd batteries?
The properties of Ni-MH batteries and Ni-Cd batteries are different. To get the best use and logest life from your batteries, you should store Ni-MH batteries fully charged and should store Ni-Cd batteries fully discharged.

 

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