Showing posts with label battery. Show all posts
Showing posts with label battery. Show all posts

Universal Tester For AA AAA C D 9V Button Cell Battery Review

Universal Tester For AA AAA C D 9V Button Cell Battery
Average Reviews:

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This is the same tester as the SE tester sold by other sellers here at Amazon. Shop around at this site because some sell it cheaper than others. I have tried a few testers and I have to say that this model is simple to use and accurate. I can test AAA, AA, C, D batteries as well as watch button batteries and 9 volt batteries. I just keep it in a shoebox with all my batteries. It has paid for itself already, let me explain. My son uses several electronic devices like CD players and remote controls that use batteries. When the power starts failing, he throws out all 4 batteries. I read somewhere that when that happens, it is quite possible that only one or two batteries is failing, so you may be throwing out the other batteries needlessly. Well when i tested batteries he was getting rid of, it turns out to be true. I also found flashlights where one battery was bad and the others were OK.

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Product Description:
Coin Cell Battery Tester used to test the following sizes; 9V: PP3 / MN1604; 1.5V: AAA / HP16 / MN2400; AA / HP7 / MN1500 ;C / HP11 / MN1400; D / HP2 / MN1300; All kinds of button cell

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Canon TS-82H Handheld Calculator Review

Canon TS-82H Handheld Calculator
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I have had this for five years.

+
The screen is big
The numbers are separated by comma every three (many out there are not)
Solar augments battery life.
Pivoting Screen

-
Canon does not tell you that you can change the internal battery when it runs out.They want you to buy a new one.Truth is, you can unscrew the bottom, and remove the tiny flat battery and replace at any Radio Shack.

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Product Description:
Simplicity at its best! Easy-to-read display and large keys for easy entry. Display angle adjusts for best visibility in ambient light. Dual-powered with solar cell and battery for use in any lighting. Global Product Type: Calculators-Basic; Calculator Type: N/A; Calculator Style: N/A; Power Source(s): Battery; Solar.

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CR2450 3V LITHIUM COIN CELL BATTERY Review

CR2450 3V LITHIUM COIN CELL BATTERY
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it works great, the seller eforcity shipped out same day, item arrived in perfect condition

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Product Description:
This CR2450 Battery provides an excellent combination of high energy and continuous voltage supply.

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HP 10B Financial Calculator Review

HP 10B Financial Calculator
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I have used (and own) many of the available financial calculators on the market.I "recommend" the HP-10B to my university finance students, both graduate and undergraduate.
The HP 10B is a directly positioned competitor to the TI-BA-II+, but HP's entry is superior.The keys feel more solid, the machine itself "seems" better made.Having worn out more than one of each, my experience has been that the HP has more staying power.And, the TI-BA-II+ often requires more keystrokes to accomplish the same tasks (i.e., NPV calculations). ...
The HP 10B has a well written manual, including examples on using the function.HP has the manual available on-line on their website for the inevitable time that the user needs it and has lost the original.
While there are cheaper financial calculators, it seems that this particular level is the minimum I would recommend to professionals or students.Less expensive versions, while saving a few dollars, miss important features.As a general rule of thumb, if the calculator can perform the "IRR" function, as this can, it will be able to handle pretty much any calculation into which the finance student, professonal, or banker will run.Lesser machines do not have this function.
Ironically, even larger fancier calculators, such as the venerable HP-12C, are in my estimation inferior as well.The 12C uses RPN logic which, while saving even more keystrokes, is simply foreign to most students.More importantly, some functions, such as the Time Value of Money functions, on the 12C require interpretation.On the 12C, for example, solving for the number of periods in an annuity, the value gets rounded UP to the next integer.
Strongly recommended as the best value in inexpensive financial calculators.

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Product Description:
If you need to keep up with your fast-paced business courses whileworking and planning for your future career, invest in the HP10B businesscalculator. Featuring over 100 built-in functions for business, finance,mathematics, and statistics, the HP10B is an ideal calculator for businessstudents who want to get ahead. Easily calculate loan payments, interest rates,amortization, discounted cash flow analyses, TVM (loans, savings, and leasing)and more. Statistical analysis is cumulative and you can figure standarddeviation, mean, and weighted mean in addition to forecasting and thecorrelation coefficient. Cash flow analysis is register-based and has 15functions.
The HP10B business calculator has an algebraic entry system and alogical and intuitive keyboard layout with easy-to-read labels. The LCD displayscreen features up to 12 characters on one line of text. Small and sturdy, thiscalculator is easy to slip into your backpack or briefcase and bring to class oryour workplace. Hewlett-Packard offers a one-year warranty on the HP10B. --Dana Van Nest

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Texas Instruments BA II Plus Financial Calculator Review

Texas Instruments BA II Plus Financial Calculator
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The TI BA Plus II is a better calculator than most of the current TI models.
Pros:
It's a nice conservative brown color and not a day glo blue or some other candy color.
The button feel (button feel a critical factor in buying a calculator) is much better than most TIs but it still could be improved.(It is not as good as the HP 12c).One shouldn't have to keep looking at the display to see if the number was keyed correctly.
The different colored keys make it easy to find the various functions.
The display is uncluttered and easy to read.
The alpha characters on the left side of the display make it easy to know what data you are entering and what the resulting number from a calculation refers to.
It has a backspace key.
The manual is well written and very complete.
Cons:
The number of key strokes that you need to do the simplest things is unbelievable.For example, to change the decimal format you have to press 2nd, format, [the number referring to the number of places], enter, 2nd, quit.Compare this to the HP 12c where you just press F and the number referring to the number of places.Six steps on the TI verses 2 on the HP.
The calculator has no weight to it.It seems flimsy.I would be very afraid of dropping it.The HP 12c is a tank by comparison.
The hard plastic slip "case" doesn't fit securely.
There is no way to change the contrast of the display.
Extra steps are required to do TVM calculations as compared to the HP 12c since with the TI you have to press the CPT key to get an answer.If you forget to do that then the display number becomes a new, unintended variable.
It doesn't retain the display when you shut the calculator off.
The arrow on the backspace key points the wrong way.Compare it to the backspace key on your computer.
It's easier to change the battery in your watch than it is in this calculator.
The "cheat sheet" in the plastic cover is only paper and very easy to loose.The HP has it printed on the back of the calculator.
No rubber feet!How much can these cost?That means you have to use two hands with this calculator; one to hold it so it doesn't slide around the table and one to enter data.You can't enter data with one hand and keep track of your place on a list of numbers with the other.
Not noticeably faster than the HP 12c which was designed over 20 years ago.
Conclusion:This calculator is better than most on the TIs in this price range mostly because of the improved button feel and the quality of the display but it would do well to take some lessons from the 80's and incorporate some of the features of the HP 12c.It's the little things that make a good calculator a great calculator.A calculator should be like an extension of you and not something that you have to constantly think about in addition to the business/math problems that you are working on.My first choice for a business calculator is the HP 12c but, if you are short on money, this is a good second choice.

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Product Description:
We're definitely taking this along with us the next time we shop for a house. Though it takes a little effort to master the collection of financial worksheets available on the Texas Instruments BA II Plus, you'll be glad you invested the time and money in this fine financial calculator.
The BA II Plus operates in standard calculator and worksheet modes. The standard mode lets you perform common math as well as operations involving the time value of money--that is, applications such as mortgages or annuities in which payments are equal and evenly spaced. You can also perform trigonometric functions in standard mode.
The more hard-core worksheet mode includes tables for amortization, bond, depreciation, and compound interest. If you're not familiar with such calculations, the very helpful user's manual will guide you through the process. All previous worksheet values are stored in memory, so you don't have to retype all the bond maturity or cash flow analysis figures.
The average user who wants to calculate a basic loan payment will be more comfortable working in the standard calculator mode. We were using the BA II Plus tools for calculating basic interest and payment periods within minutes. Still, it's good to know that the more advanced features are available for those who require heavy-duty financial computing.
Finance students and average users alike will find much to like in the Texas Instruments BA II Plus. --John Frederick Moore

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