Hitachi WH18DFL Cordless Impact Driver

Hitachi WH18DFLMy Rating for the Hitachi WH18DFL is 3.75 Stars

Review Summary: A Ten Year Warranty comes with the Hitachi WH18DFL Cordless Impact Driver. It is a nice light tool with enough power to get the job done.


Detailed Review of the Hitachi WH18DFL 18 volt cordless impact driver

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Impacts per Minute (IPM) Grade: Average

The Hitachi WH18DFL has a top IPM of 3000 IPM. The average top IPM of 18 volt cordless impact drivers is 3016 IPM. An impact driver delivers blows in a rotational way as opposed to a hammer drill which delivers blows into the work. The higher the IPM of a cordless impact driver the faster a screw or bolt will be installed or removed.

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Power Grade: Below Average

The Hitachi WH18DFL has a power rating of 1150 in/lbs. The average power rating of a 18 volt cordless impact driver is 1369 in/lbs. The power of a cordless impact driver is measured by torque (inch-pounds). Torque is the measurement of the twisting force the drill applies when started. Power in DeWalt cordless drills is measured in unit watts out(uwo) which measures torque at different drill speeds. If more power in a cordless impact driver is what you are looking for, you may be interested in the Milwaukee 2650-21 18v Impact Driver. It has a power rating of 1400 in/lbs.

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Speed: Average

The Hitachi WH18DFL has a top speed of 2500 rpm. Higher speeds help you drill holes quicker and cleaner. The average speed of a 18 volt cordless impact driver is around 2518 rpm.

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Battery Run Time: Below Average

The battery run time is 1.5 amp hours. The average for 18 volt cordless impact drivers is 2.3 amp hours. The ampere-hour rating (Ah) gives you an idea of how long your battery will last between charges. A 3Ah will last 3 times longer than a 1Ah battery. If you are looking for a cordless impact driver that will run longer between charges, check out my review of the Milwaukee 2650-22 18v Impact Driver. The battery run time is rated at 2.8 amp hours.

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Battery type and quantity: Good

The Hitachi WH18DFL comes with 2 Lithium Ion batteries. Most newer cordless impact drivers have 2 Lithium batteries included. Lithium are lighter , can hold a charge longer, and are more environmentally friendly than older NiCd batteries.

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Charger: Excellent

The Hitachi WH18DFL comes with a 30 Minute charger. The best chargers offer less than 1 hour charging and a maintenance mode that can extend the life of the battery.

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Price Range: $100-200

Prices may have changed since this review was done. Always check the most recent and best price for the Hitachi WH18DFL cordless impact driver from multiple stores.

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Tool Weight: Lighter

The Hitachi WH18DFL weighs 3.3 lbs. The average 18V cordless impact driver weighs about 3.7 lbs. Tool weight comes into play when you use it for extended periods of time or you hold it in awkward positions.

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Hitachi WH18DFL Cordless Impact Driver Strengths

  1. Lighter weight
  2. Fast battery charger
  3. Longer warranty
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Hitachi WH18DFL Cordless Impact Driver Weaknesses

  1. Slightly less power
  2. Shorter battery run time

Some other features of the Hitachi WH18DFL include:

  • Carrying case
  • LED work light
  • Ten-year limited warranty
Order the Hitachi WH18DFL
Order the Hitachi WH18DFL

Reviewed by Jon Sevenson on 7/31/12.

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