Sinometer Digital Battery Tester, BT20 | 
| Brand: Mastech
Category: Home Improvement
List Price: $14.95
Buy New: $6.99 (On sale from $9.99)
as of 7/29/2010 18:01 PDT details
You Save: $3.00 (30%)
New (2) from $6.99
Seller: Kaito Electronics, Inc.
Rating:  9 reviews
Sales Rank: 11982
Media: Misc.
Memorabilia: No
Shipping Weight (lbs): 0.1
Dimensions (in): 3 x 0.5 x 1.5
MPN: BT20
ASIN: B000MRFV96
Availability: Usually ships in 1-2 business days
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| Features:
| • | Tri-Color Meter Indicates The Battery's Strength, High, Medium & Low | | • | Tests C, D, AAA, AA, 9V & Button Cells | | • | 20-segment bar graph plus numeric indication | | • | Powered by one AAA battery | | • | 1 Year Warranty |
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| Editorial Reviews:
Product Description
The Sinometer BT20 is a great gadget, and it really works. A little arm moves up and down to accommodate the battery, you place it between the two points, and the easy-to-read display tells you instantly whether you have a dud, or if you can eke out another few minutes of battery life. Best of all, it fits easily in your pocket, so you can take it anywhere you have battery operated equipment.
One side of it handles AA, AAA, C and D batteries, and on the other side, there are two buttons for testing 9 volt batteries, so you'll have no more tingling tongue from the old fashioned "tongue between the terminals" checking method.
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| Customer Reviews:
Showing reviews 1-5 of 9
 Great and accurate tester December 8, 2008
Fishing Fool (On a yacht near Fiji Islands)
3 out of 3 found this review helpful
This thing is great. It's cheap, small, accurate. The LCD display is a very nice feature. I use this to measure fairly accurately the remaining voltages on my rechargeable Ni-MH AAs so I could match them as sets of two or four. Without this tester my batteries would get all mixed up new along with old which is not good because ideally you'd want all batteries in a single device to be matched.
For example you do not want to have 1 old battery mixed with 3 new ones in a 4 battery device as the single old battery will tend to discharge sooner than the others causing the other batteries to try and run the device without the help of the 4th battery. It's the same situation with two battery devices eg you do not want a new battery paired with an old one.
Keep in mind this tester requires a single AAA battery to run. This isn't a big deal for me since I put a lithium battery in mine which should last for many years.
Battery Tester February 29, 2008
Christian Rider (OOB, ME USA)
2 out of 2 found this review helpful
Purchased this item along with a BT558 offered as a pair. Great buy and both testers work great.
Great product!I April 19, 2009
Mrs. Barbara E. Smith (Austin, TX, USA)
I was DELIGHTED with exta-prompt delivery of much-needed item. I find it very easy to use!
My favorite battery tester May 26, 2010
T. Murphy (Illinois)
This is the best battery tester I have found. It is accurate, pocket size, and the LCD display takes the guesswork out of readings. Priced OK, received very quickly.
Love product Hate shipping February 5, 2010
Jerome M. Hall (Huntsville, Al.)
0 out of 1 found this review helpful
The product is great. Works as advertised and is accurate. The shipping cost of $6.95 was WAY OUT OF LINE! They put the blister pack instrument in a business envelope and used a 44 cent stamp to send it. What hubris!
Showing reviews 1-5 of 9
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