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Discount Replacement HITACHI WH 8D1 Power Tool Battery

What is rechargeabel battery self discharge?

• Primary battery or full charged secondary battery, when put aside for a period, it s capacity will decline or lose,this phenomenon calls self discharge that is electricity flee away.It is decided by the inner electro-chemistry system, similar to water leakage from pond or reservoir.

What is the ambient temperature affects the battery performance?

• Low temperatures (e.g. -15^oC) will obviously reduce Ni-Cd and Ni-MH battery discharge rate. At -20^oC electrolyte is at its freezing point, charge speed will greatly slow down. At low temperature (under -15^oC) charge will raise the internal gas pressure and probably unseal the safety vent. Ambient temperature of 5^oC to 30^oC is the best range to get effective charge. Generally with temperature rising charge efficiency will become higher. But when the temperature rises to 45^oC or higher, the materials performance in the battery will be degenerated and battery service life will be shorten greatly.

How can rechargeable batteries be connected?

• The rating for rechargeable battery NEW!! Battery Chemistry F.A.Q - Here we discuss different battery designs currently used, some of the chemistry involved, and advantages and disadvantages of each design. We have also included some useful definitions and a list of parameters to guide you in matching your battery requirements to a specific battery design.

How to prolong the life of your HITACHI WH 8D1 Power Tool Battery?
There are three things to take to help extend the life of your HITACHI WH 8D1 battery.
• First thing: store the HITACHI WH 8D1 battery separate from the tool in which it belongs to. If it is fully charged, don't leave it in the charger .
• Second thing: keep the HITACHI WH 8D1 battery in a place that has a fairly consistent temperature.
• Finally, if dealing with Nickel based batteries, make sure that the WH 8D1 battery is fully discharged before recharging it.

After a old WH 8D1 Power Tool Battery seems to have stopped taking a charge, can I recharge it?
• There is a belief that you can recondition your old nickel based battery. Nickel based batteries will crystallize after a period of time and use. Some people say that you can break up the crystallization by running the battery at a very low volt (.5V or less) over a long period of time, and doing this over and over a couple of times as the WH 8D1 Power Tool Battery drains. However this process can take a long time and has not been scientifically proven to work, so in most cases, your best bet is to replace the old battery.

If the original Power Tool Battery is a NiCd battery, can I use a different chemistry Power Tool Battery?
• These situations would depend on both the charger and machine. A lot of chargers will charge NiMH batteries, and a few others will charge Li-Ion. However, even if the charger will fit this, your machine might not. It is best in these situations, to check your user manual or contact the manufacture to find out the technical specs of your model.