Before buying a particular item, many people carefully choose the store, manufacturer and characteristics. In this way, they want to protect themselves from numerous breakdowns. The same goes for the screwdriver, which will no doubt come in handy on the farm. Only now, no one is safe from battery breakdown.
Instructions
Step 1
If you bought a quality screwdriver from leading manufacturers of equipment, go to the service center right away. In most cases, your battery will be repaired or replaced absolutely free of charge. In the event that you have lost the warranty card or the allotted period is over, and you do not want to pay money, try to repair the product yourself.
Step 2
First, prepare the battery for repair, unscrew the bolts that hold it and remove the top cover. Remove the battery assembly, which is most likely the problem of the broken screwdriver.
Step 3
Of course, the batteries may differ from each other due to the different brands and models of the screwdriver you purchased. But in any case, its interior will consist of several small batteries, also called banks. These items are of a standard size.
Step 4
Locate the four contacts located on the battery. Two of them - power, serve to transfer charge and discharge currents. Another, upper one, acts as a manager. The fact is that it is connected to a thermal sensor that is built into the battery. This is necessary so that the battery does not overheat during charging, because chargers in most cases work with high currents. Finally, the fourth service pin must be connected to the resistance. This element allows you to equalize the charge of all cans.
Step 5
The battery works according to a rather simple scheme: during charging, each bank receives a charge and transfers it to the next. If the screwdriver does not function, then one of the elements has stopped working. To find this link, fully charge the battery.
Step 6
Now, using a voltmeter, measure the voltage on each available jar. The value of this element should be 1.2-1.4 volts. If the indicator falls below this mark, then the bank is not functioning. Replace this element, reassemble the battery and continue using the screwdriver.
