How to Charge a 12V Screwdriver Battery
I brought 6 Makitov devices for repair a couple of weeks ago.
4 screwdrivers, 1 jigsaw and 1 grinder.
I kiss the box right. Heavy.
Voiced me the price of repair. It turned out that only one screwdriver made economic sense to restore. The rest went for parts.
In general, the time has come to replace the fleet of hand-held cordless tools.
So I immediately bought for all joiners new screwdrivers with Li-ion batteries.
Guys are used to Ni-cd batteries, and Li-ion require a completely different approach. Right to the opposite.
And, of course, it’s not just about how to charge a Li-ion screwdriver’s battery. If it is not properly discharged and / or stored, there will also be little good for it.
Therefore, I looked at a couple of dozen sites and a couple of hours of.
He threw out all the husks and made the driest squeeze without “water”.
How to charge a Li-ion screwdriver battery and other important rules for its operation
- Remember.Li–ionto the opposite are different fromNi–Cd!
- Put Li-ion on charge already with a remaining charge 20-50%.
- Important! Do not allow discharge of Li-ion below 10-20%. This is a critical quantity. The smaller the discharge, the longer the Li-ion will work.
- Li-ion works optimally in the range from 10 to 45 ° C. Charge at a temperature of 10 to 30 ° C.
- Once every 4 months, carry out a full discharge-charge cycle to calibrate the charge level sensor in the battery controllers. That is, discharge to almost 100% and put on charge for 12 hours.
- Keep Li-ion on charge 40-60%.It is impossible to store charged 100% Li-ion, since in this case it will permanently lose 20% of its capacity in 3 months.With proper storage. With a charge of 40-60%. Li-ion will irretrievably lose only 1% of capacity in the same 3 months.
- If the screwdriver is equipped with two Li-ion, then one charge up to 40-60% and store as a backup. Once a month use it as a worker. Charge up to 100%, discharge up to 40-60% and leave it in storage again.The second Li-ion is the main worker. They worked. At the end of each day, put it on recharge, even if it is discharged by less than 10%.
Use backup Li-ion if the main working Li-ion is discharged as a result of intensive work and there is no time to wait for it to charge.
That’s all. Now you know how to charge a Li-ion battery for a screwdriver.
I handed it to every joiner, and I hung it on the notice board in the workshop.
And there may still be a question. Why did I switch from Ni-cd to Li-ion cordless screwdrivers?
Here are the advantages of Li-ion batteries over Ni-cd:
- At least 2 times greater specific capacity;
- Self-discharge several times less;
- Lack of memory effect, which makes it possible to recharge at any time;
- Withstands an average of twice as many charge-discharge cycles, that is, it will live twice as long.
Are there any disadvantages?
And finally, if you work with a screwdriver professionally. Do not hesitate especially. It will crumble along with the Li-ion battery. So you probably will not have to buy a separate Li-ion battery.
Just with reasonable non-vandal use, a screwdriver should be enough for a couple of years.
And, yes, another important rule. Do not save on the power of a screwdriver. It corresponds to the battery voltage. Take a minimum of 20 volts with a Li-ion battery. It will spin like a beast.
But Kupite is weak. There will be little sense from him, and there will be no joy from a penny.
I generally dialed screwdrivers with 25-volt Li-ion batteries. Joiners are not overjoyed. Especially after Ni-cd at 14 volts.
Look like that’s it. There are questions, do not agree with something. Write in comments.