Hitachi WH18DL 18 Volt Impact Driver

My Rating for the Hitachi WH18DL is 4.5 Stars

Hitachi WH18DLReview Summary: The Hitachi WH18DL Cordless 18 Volt Impact Driver is a great tool with a good impact rate and a long run time between charges. It even includes a ten year warranty to back it up.


Detailed Review of the Hitachi WH18DL 18 volt cordless impact driver

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Impacts per Minute (IPM) Grade: Good

The Hitachi WH18DL has a top IPM of 3200 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 WH18DL has a power rating of 1330 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 Bosch 25618-02 18 Volt Impact Driver. It has a power rating of 1500 in/lbs.

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Speed: Good

The Hitachi WH18DL has a top speed of 2600 rpm. Higher speeds help you drill holes quicker and cleaner. The average speed of a 18 volt cordless impact driver is around 2518 rpm. For a faster cordless impact driver, check out my review of the Bosch 26618-01 18 Volt Impact Drill. It has a top speed of 2800 rpm.

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Battery Run Time: Excellent

The battery run time is 3.0 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.

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Battery type and quantity: Good

The Hitachi WH18DL 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: Good

The Hitachi WH18DL comes with a 40 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: $200-300

Prices may have changed since this review was done. Always check the most recent and best price for the Hitachi WH18DL cordless impact driver from multiple stores.

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Tool Weight: Lighter

The Hitachi WH18DL weighs 3.5 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 WH18DL Cordless Impact Driver Strengths

  1. High impact rate
  2. Fast
  3. Fast battery charger
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Hitachi WH18DL Cordless Impact Driver Weaknesses

  1. Slightly less power
  2. none

Some other features of the Hitachi WH18DL include:

  • Carrying case
  • LED work light
  • Ten-year limited warranty
Order the Hitachi WH18DL
Order the Hitachi WH18DL

Reviewed by Jon Sevenson on 6/19/12.

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