Makita BTD140 Cordless Impact Driver

My Rating for the Makita BTD140 is 4.5 Stars

Makita BTD140Review Summary: The Makita BTD140 Cordless Impact Driver is a hard working tool and will handle the tough jobs well.


Detailed Review of the Makita BTD140 18 volt cordless impact driver

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Impacts per Minute (IPM) Grade: Good

The Makita BTD140 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 Makita BTD140 has a power rating of 1280 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 Makita BTD144 18 Volt Impact Driver. It has a power rating of 1420 in/lbs.

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Speed: Below Average

The Makita BTD140 has a top speed of 2300 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 23618 18 Volt Impact Driver. 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 Makita BTD140 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 Makita BTD140 comes with a 45 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 Makita BTD140 cordless impact driver from multiple stores.

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Tool Weight: Lighter

The Makita BTD140 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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Makita BTD140 Cordless Impact Driver Strengths

  1. High impact rate
  2. Lighter weight
  3. Longer run time
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Makita BTD140 Cordless Impact Driver Weaknesses

  1. Slightly less power
  2. Less than average speed

Some other features of the Makita BTD140 include:

  • Carrying case
  • LED work light
  • Three-year limited warranty
Order the Makita BTD140
Order the Makita BTD140

Reviewed by Jon Sevenson on 7/3/12.

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