Bosch PS40-2A 12-Volt Impact Driver

My Rating for the Bosch PS40-2A is 4 Stars

Bosch PS40-2AReview Summary: The Bosch PS40-2A 12-Volt Impact Driver has a good impact rate and is nice and light for those overhead jobs.


Detailed Review of the Bosch PS40-2A 12 volt cordless impact driver

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Impacts per Minute (IPM) Grade: Good

The Bosch PS40-2A has a top IPM of 3000 IPM. The average top IPM of 12 volt cordless impact drivers is 2955 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 Bosch PS40-2A has a power rating of 800 in/lbs. The average power rating of a 12 volt cordless impact driver is 981 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 Porter-Cable PC120IDK-2 Impact Driver. It has a power rating of 1400 in/lbs.

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Speed: Below Average

The Bosch PS40-2A has a top speed of 1800 rpm. Higher speeds help you drill holes quicker and cleaner. The average speed of a 12 volt cordless impact driver is around 2423 rpm. For a faster cordless impact driver, check out my review of the Hitachi WH12DAF2 12-Volt Impact Driver. It has a top speed of 2500 rpm.

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Battery Run Time: Below Average

The battery run time is 1.3 amp hours. The average for 12 volt cordless impact drivers is 1.5 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 Bosch PS40-2A 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 Bosch PS40-2A 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 Bosch PS40-2A cordless impact driver from multiple stores.

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Tool Weight: Very Light

The Bosch PS40-2A weighs 2.2 lbs. The average 12V cordless impact driver weighs about 2.8 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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Bosch PS40-2A Cordless Impact Driver Strengths

  1. Very light
  2. High impact rate
  3. Fast battery charger
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Bosch PS40-2A Cordless Impact Driver Weaknesses

  1. Shorter battery run time
  2. Below average speed

Some other features of the Bosch PS40-2A include:

  • Carrying case
  • LED work light
  • Three-year limited warranty
Order the Bosch PS40-2A
Order the Bosch PS40-2A

Reviewed by Jon Sevenson on 9/13/12.

2 comments:

cordless power tools said...

Your review is always based on concrete evidences. I like the depth of your review. This time again on Bosch ps40.

Jon Sevenson said...

Thanks, I try to cover the most important features.

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If you are using Firefox like me, you have to have 3rd party cookies enabled to leave comments...thanks Jon

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