Cordless impact drivers have become increasingly popular since inception. They have so many advantages over their corded counterparts. One of the most important advantages is its ease of mobility and portability. This is made possible by the presence of batteries. Cordless impact drivers make use of batteries to generate power which turns the chuck.
It is acceptable to say then that the battery of a cordless impact driver is the heart of the tool. It is therefore important to know as much as there is to know about rechargeable battery packs if you plan to get serious with buying a impact wrench for the money.
When talking about cordless impact driver batteries, there are some terms that you may sound ambiguous. We will try to demystify some of those terms in this article so you don’t get lost when next you come across them.
Battery Capacity: When shopping for cordless impact drivers or its battery, you might come across this term on the packaging or on the battery pack. This simply refers to how much electrical charge that particular battery can store. Batteries with larger capacity can be used for longer before needing recharge. However, batteries with larger capacity tend to be more expensive and may weigh more.
Battery Life: Everything has a lifespan. In the case of rechargeable batteries, battery life refers to the number of full charge cycles a battery can complete before it becomes weak and due for replacement. Most manufacturers put 3-5 years or 800 charge cycles; meaning after the stipulated time or after 800 charge cycles. Do not expect optimum performance from such a battery, consider a replacement.
Charge Cycle: When working with your cordless impact driver, you may run the battery down completely, leaving it empty and without power. Charging this particular battery from its empty level to a full level refers to one charge cycle.
Recharge Time: This refers to the time it will/may take for a battery to fully charge when connected to direct current.
Amp Hour: Amp hour is the variable for measuring a battery’s capacity. A battery with 1 amp hour capacity is capable of delivering 1 amp of current in duration of 1 hour.
Memory Effect: This term may be used to refer to a battery that is not performing up to par.
Charging a battery that still has lots of charge in it may result to memory effect because the battery may remember that the last level which may be 50% as the empty level. When next it gets to 50% it may just go off, requiring recharge. However, this does not happen to all batteries; lithium-ion batteries do not suffer from memory effect.
Incorrect charging and age of the battery are some causes of memory effect in batteries. If your battery is prone to memory effect, ensure you use the tool till it completely drains out before having to recharge.