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18v Li Cordless

Top Tips For Power Tool Battery Users
Nowadays, electric power tools aren't just used by professional technicians such as auto repair outfits but are becoming a part of most householders tool boxes. As power tools have progressed in innovative design and efficiency many men and women own and use power tools for home or related repairs and projjects. In recent years cordless power tools relying on batteries have been a great invention without a doubt and to maximise the effectiveness and life span of these power tool batteries such as the dewalt 18 volt battery it's a good idea to understand how to get the best out of them.
As I'm sure you're aware technology for power tool batteries is improving all the time. Despite the fact that the tips below might not apply in 2 years time, it's good to be aware of them so you can check these factors with the manufacturer when you buy.
Tip 1 - Recharging time
Nowadays, the bulk of professional battery chargers for power tools such as the dewalt impact driver will automatically stop charging when the battery is full but there are still some that keep charging even after the battery is full, which causes it to overheat which adds to battery degradation.
Empty a Battery Before Recharging
Opinions differ about the correctness of waiting till a battery is completely emptied of power before re-charging. Most advice says you reduce the life of your battery if you reload before empty but there are those who say that batteries don't have a memory any more and so recharging when still half full does not affect them It is maybe the best option to wait wherever possible until you can feel the battery is starting to get low before recharging but if you do need to reload before that then it's unlikely to do much damage to the battery. This shouldn't be a problem if you make sure you have at least one spare battery with you always. So the rule here is: don't charge it till you know it needs it but please also bear in mind that if you keep on using it when it's low on charge it can result in battery cell damage.
Prevent Damage of Battery
This tip may seem apparent but it's important to remember that batteries, any batteries, do not like to be dropped. So just be that bit more careful when using them.
Battery Classification
There are three different types of batteries, as below:
First are the Ni-Cad batteries which were the first sort of batteries available. They are the best for reliability and are capable of being re-charged more times than the other sorts of batteries. They tend to be cheaper than other sorts of batteries and are also able to operate comparatively well in extreme temperatures. However, drawbacks tend to be that they are not so environmentally friendly and also their energy gradually gets less as you work.
Next we have the Nickel-Metal Hydride battery or NiMH's These have longer run time than Nicad's as they can hold 2 - 3 times the charge and they are lighter in weight. They have a couple of negatives for you to bear in mind in that they cannot be charged so many times as the nicads can and also they don't perform well in excessive temperatures.
The third type of battery is the Lithium Ion Battery - commonly known as the Li-ion. These batteries have the ability to store large amounts of energy when compared to the other 2 types of batteries, are able to hold their charge longer and will continue on to give good power until they are empty. These batteries are able to hold their energy well when stored away but you should be aware that if these batteries drop all of their charge below a certain level you will never be able to charge them again! Due to this characteristic when purchasing these batteries make sure you use a stockist who has a lively selling throughput so you get a good battery.
They are more expensive than the nicad batteries but can also run effectively in icy weather, even at freezing point as long as warmed up inside before going out in the cold. They don't perform well at very high temperature. They have a technology that ensures all cells in the battery are charged evenly so reducing the wear and tear on the battery, helping to promote longer life. They are a little bit more prone to failure due to relying on a small inbuilt computer.
The above details should have given you a good idea of the different batteries offered and their positives and negatives so that when purchasing a power tool battery you have a better idea of how it will perform.
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