Tool Tip: Lubricating a Cordless Impact Tool and Preserving Battery Life

Just like the Tin Man needed oil to function in “The Wizard of Oz,” so too does a tool. Lubricating a tool is essential to the tool’s life. With the launch of the W7150 Cordless Impact Wrench Ingersoll Rand has made this step as simple as possible for the technician.

The only maintenance the W7150 requires is removing the hammer case to apply grease on the anvil, impact mechanism assembly and gears. Be sure to apply grease evenly and sparingly. Ingersoll Rand sells and promotes a grease gun for the grease mechanism in the Impact tool. 

“Any preventive maintenance scheduled for lubricating mechanisms or gearing is definitely advantageous in the shop,” says Ingersoll Rand Cordless Portfolio Manager. “There is probably a minority that actually lubricates their tools on a regular basis.” 

Ingersoll Rand strongly recommends lubricating tools for longer shelf life, and we include instructions in our product manuals.” 

Maximizing Battery Life 

The W7150 Cordless Impact Wrench comes with a 20 volt lithium-ion battery. The li-ion is a low-maintenance battery that has no memory and does not need exercising (deliberate full discharge) to keep in shape. The battery and the battery charge system are set up to handle the best-case scenario for charge conditions. This includes what voltages they charge to, where it is allowed to charge, and where it stops charging. 

If the end user consistently charges the battery to 100 percent capacity, it can actually lose life cycles. Instead, if the end user takes the battery off the charger while the fourth LED is blinking, at say 92 percent rather than 98 percent, it can actually increase the life cycle slightly. Once the third LED is lit, the battery is in what is called the “constant voltage section.” After the battery gets to this stage, it is packing in that last 10 to 11 percent of capacity and the charge curve will start to flatten off at that point. This process is not just specific to Ingersoll Rand batteries, but to the lithium battery chemistry in general. 

Once the battery pack is full, the charger will shut down. The charger is on a timer and will assess charge levels every 30 minutes to ensure that the battery is fully charged, or it will top off the battery as needed. The best practice is to remove the battery once the charge is complete, though the battery pack for Ingersoll Rand was designed for safety, and the user shouldn’t experience any problems with the battery left on the charger. 

The best temperature for the li-ion battery is to be charged between 0 and 45 degrees Celsius, or 32 to 113 degrees Fahrenheit. The Ingersoll Rand charger has an internal sensor to limit the temperature. When the user puts the battery into the charger, it will check the temperature and sit and wait until the battery is at appropriate temperature in the 0 to 45 degrees C range before initiating the charge. While the battery is charging, the in-cycle temperature limit is 50 degrees C to give it a 5 degree temperature window. 

Once the battery is charged and connected to the W7150, it can reach temperatures of 64 degrees C, but at 65 degrees C the battery will automatically shut itself down. Except for extreme applications, the charger is more likely to fall below 0 degrees C and freeze in a place like a cold garage than it would be to go over the 50 degree (on the charger) or 64 degree (in use) mark. 

With these tips in mind, tools like the W7150 or other cordless impacts can take end users a long way with plenty of battery life to spare. 

More information on the W7150 Cordless Impact Wrench here.