Product Description

Dont you just hate when reaching for the remote control and find out its not operating because the weaken batteries? How can we test the little battery for remaining power? How much longer can we use those batteries before replacing it? This little compact tester unit is the answer. Just hook up the battery and you have an instant answer.

Product Details

• Amazon Sales Rank: #303 in Home Improvement
• Brand: Mastech
• Model: BT558
• Dimensions: 1.00" h x 2.00" w x 2.00" l, .13 pounds

Features

• Checks AA, AAA, C, D, 9V types of regular or rechargeable batteries
• Internal battery not required, lasts forever.
• Compact size and light weight
• 90 days money back guarantee and 1 year limited warranty

Customer Reviews

No more battery guesswork
This is a great gadget, and it really works. A little arm swings up 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 can fit in your pocket, so you 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 those pesky 9 volt batteries, so you'll have no more tingling tongues from the old fashioned "tongue between the terminals" checking method.

Don't expect any fancy packaging, or even the same color as advertised (mine is a dull yellow), but if you have kids and/or lots of battery operated gizmos and gadgets, you'll need one of these - and at the price, why not?

Amanda Richards, August 17, 2005

Inaccurate as it does not test under load
The problem with this battery tester is that it only checks for voltage remaining in a battery. Even a 90% used battery can show nearly full rated voltage. It is only when a load is placed on the battery that a true assessment is possible.

For example, a dead alkaline battery and a fully charged rechargable battery (NiMH full charge = 1.2 volts) both read the same low (yellow).

Look for one of the more expensive units that tests under load.

worth the money
It works! And it saves me tons of money, lots of kids, lots of electronics , lots of batteries everywhere. Now I know which ones can be saved and which to recycle. I covered my cost already the first use!