Battery - "Black & Decker" 20-V Lithium-ion Battery

No memory effect battery for Max 20-V tools or garden tools. Enhanced power, performance and run times. 2-year warranty.

Amperage :2 A
Voltage :20 V
Wattage :40 W
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Battery - "Black & Decker" 20-V Lithium-ion Battery is rated 4.1 out of 5 by 23.
Rated 5 out of 5 by from Battery will last if... I have both read and experienced that with Lithium batteries you can not leave it discharged for a long time. As soon as it discharges completely, you need to charge it asap. It will not hurt to charge it back even if it is not completely dischaged. Now, if the battery is warm/hot to the feel - let it cool first before placing it back on the charger. I usually bring it inside my house (with A/C) for a couple hours then I put it in the charger. I have been using one battery for both my blower and trimmer for over 3 years now and have no problems.
Date published: 2017-06-18
Rated 5 out of 5 by from I love it personally Seems strong enough for my needs. I love that it's small, not heavy, and can be used interchangeably with other cordless tools. I bought a hedge trimmer, am now getting a pole saw powered by the same battery. I like that you can leave it plugged in without doing it any harm.
Date published: 2014-10-13
Rated 5 out of 5 by from Excellent little screwdriver I have had this screwdriver/battery for several years & it has seen a lot of use! Recently, the battery finally gave it up. After doing some research, I decide to buy a new screwdriver/battery combo since it was only about $10 more than the replacement battery for the old screwdriver. It gave it up a couple of weeks later--not the battery, the screwdriver failed. Returned it & got this battery--it has served me well for years so no reason to think this one won't do just as well. Plus, I liked the old screwdriver more than the newer version by Black and Decker.
Date published: 2017-05-03
Rated 1 out of 5 by from Don't waste your money If you want to ensure you will want to buy a replacement item, then go ahead and buy ANY Black & Decker product. We have 20V and 18V products. If you want a product to last 15 minutes after beginning use after a full charge - this is your product. We are saving to buy something else - NEVER B&D again. I am severely disappointed how the qualify of B&D has fallen over the last few years.
Date published: 2015-04-25
Rated 2 out of 5 by from Battery doesn't last I bought a battery-operated chain saw and used it maybe 10 times. Now the battery will not hold a charge long enough to cut through a large limb. Very disappointing.
Date published: 2018-01-04
Rated 4 out of 5 by from CORDLESS EQUIPMENT BATTERY IT CHARGED QUICKLY BUT IT DID NOT LAST AS LONG AS I WOULD HAVE HOPED.
Date published: 2018-05-21
Rated 1 out of 5 by from 10 minute expected battery run time! Per Black and Decker customer service, the expected runtime on this battery is 10 minutes! I was told most people but a second battery. Excellent. Now I can weed whack a quarter of my yard before I have to wait hours to charge the battery. I would love to know how the satisfied reviewers are able to actually use these products...
Date published: 2017-11-28
Rated 3 out of 5 by from B&D 20-volt, 40 Amp Hours Rechargeable Battery Recharges quickly, however still does not retain charge once off the charger. [This review was collected as part of a promotion.]
Date published: 2018-08-06
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