The original maH is These were cheapos but nice looking bulbs. For the ones that DO work, what advantage would there be to replace with the maH?
And would charging under indoor light be sort of the same as cycling the batteries on a charger? Can you OVER charge these batteries that way? BatteryStuff Tech You have to make sure the charger you use is compatible with nimh batteries, which will depend on the charger. Al Can you leave a Ni-MH battery on the charger indefinitely without damage — i. BatteryStuff Tech It depends on the charger. That question would be best answered by the charger manufacturer.
Samer an awesome article thanks man but i have a question …….. JIm H. Question: Do Ni-MH batteries lose power — amperage like a car battery would? In other words, the voltage is 2. Effem Is it safe to use Ni-Cd battery charger to charge Ni-mh batteries? What are the precautions if I will do this?
Another question: Can I charge different brands of AA Ni-mh batteries at one time in a 4-slots battery charger?
Steve I have a radio that uses 4 AA batteries. When I put alkaline or NiCad batteries in it works fine.
I recently purchased NiMH batteries to use in it and charged them up. My multimeter says they have almost 1. It looks like there are no batteries in in at all. When I put the NiCad batteries with lower voltage and amperage readings back in it fires right up.
Any thoughts as to why? Terry I was just reading through and I am no expert like some of the others here but it looks like your radio requires 1. Kurt So I wonder if someone can help. I have a communicator for a helmet that runs on a NI-MH battery. The battery pack says 4.
The charger that came with the unit is a 12V ma charger. I also have one from a small cordless drill that is 12V ma. Is it better to charge is with the ma? Just curious if that is a slower charge and if so it is a better way to go for longevity of the battery? Jim O I have a Cobra two-way radio set.
When the radios are placed in the charger, the LED s light up and they seem to charge and all is well. The charger instructions say you can leave the radios on the charger even after the battery is charged. R Woods Outstanding site. Exactly what I was looking for and the information on more modern batteries was very interesting.
Thanks, r woods. JT Great write-up. Much more clear and concise, and with a more user friendly presentation than most articles I have read although they were intended for a different audience. How do you decide if it needs to be replaced? These numbers are just an example, not representative of my actual batteries. If it matters, they are used in High-end 2 way radios. I have replaced nicad 1. Autumn I just wanted to let you know that this article was extremely helpful and useful.
I now have the answer I need to make my battery purchase. Thank You! Chuck I have a rayovac rechargeable alkaline labeled 1. Thanks for the help. I would recomment contacting the manufacturer to find out the heat tolerance of those batteries, and measure the temperature accordingly. Shaz i have 2 nimh 1. I got a 11v battery charger from old stuff…can i use it to charge my battery..? Or how much volt will need to charge that batteries?
I like to build circuits.. Jeremy Fear No, that charger would not be able to charge those batteries. Only a proper charger that is configured for NiMH charging is recommended. Dick This was a great article. When I first used solar lights in the yard and the batteries eventually failed I could not find maH ones anywhere.
I succeeded in locating maH by mail order from China. I always worried that the difference in spec would be a problem but I could not find any information on the Web about it then. Are they old batteries? Maybe you should consider replacing them. Dmac Hi, I bought a digital camera and the sales guy told me to charge my Kodak Ni-MH batteries for 4 hours before use, I charges for 6 hrs. I assumed I should charge for 4 hrs every time but the battery manual recommends Should I listen to the sales guy or charge as per the manual.
Or does anyone know how long I should charge my batteries? BatteryStuff Tech Maybe the batteries were only partially charged when you bought them. Sometimes the batteries are fully charged when the leave the factory, but when they sit on the shelf for months they do drain some. As long as the charger is an automatic charger, there really is no harm in charging the batteries for 4, 6, or Once they reach full capacity, hopefully the charger should stop charging.
Capacity may differ, but that only affects runtime for the device. Rechargeable NiMH batteries are a compatible replacement for the one-time use Alkaline batteries. Julia Hi, I want to buy an adapter for my car since it is too old to have the place to be able to plug in and listen to my Ipod.
I always heard that just a plane invertor is too high a voltage. If I get a amh charger, will I be able to play my Ipod off of it without damage? Same for a cell phone? It is rated at 6v output, but is showing Is this usual to this type charger? It is specifically for NiMH charging on the label, so maybe the circuitry turns up the voltage at initial hookup? I just bought this to charge a 4 pack of ma AA size batteries.
The charger is very warm to the touch with a red charging LED showing. No instructions came with it. BatteryStuff Tech I cannot confirm if that behavior is normal since we do not sell that particular model charger. I recommend checking with the manufacture of the charger for technical help. Matt Great article. My question … our video baby monitor came with three 1. We charge them using the supplied cable that just plugs into the handheld monitor.
The batteries that came with the monitor are slowly dying so I would like to replace them. BatteryStuff Tech Yes. However, some brands may have higher capacity than others.
It will run your monitor for longer than say a mAh battery. Is it safe to use 4 alkaline 1. BatteryStuff Tech Please refer to technical help from Kodak for the answer to your question. Steven Very useful info — thanks.
Two seem fine. Is it common to have very different performance within a group bought in the same package? Also, I doubt I have charged them even 75 times, after mostly using them in digital cameras, Over a two year period. Is there any justification to complain to the retailer? But this does not give your situation any less validity. Have you measured the voltages of the batteries? Beatlearl I had to bookmark this site because I know smart when I see smart and after reading some of the articles on your site you guys are smart.
Yes, before you use your new NiMH batteries for the first time you need to charge them fully. After using it and wondering why the battery was already low, I looking in the manual and am now charging it fully. BatteryStuff Tech Not charging full capacity and discharging in the first initial uses can cause the memory effect. Closely monitoring the capacity of the batteries would be the way to determine if there was any negative effect.
Plz Help me with the exact time!!! BatteryStuff Tech At what rate does your charger charge at? Amin Which is the best battery mAh or mAh? Can i charge mAh battery in this charger? BatteryStuff Tech I am not familiar with the battery charger you mentioned, so I cannot answer that question. But the higher the mAh rating on a battery is, the more capacity it has.
This translates to longer runtime for your application before needing to recharged again. I would like to thanks you for giving wonderful understanding. Unlike alkaline batteries where the voltage drops quickly, rechargeable batteries offer a more constant voltage around 1. That is why the latest rechargeable batteries will actually outperform alkaline batteries in equipment calling for a constant and high level of energy input, such as digital cameras, flashes, camcorders, computers, portable phones, CD players, toys, gadgets - well just about anything.
Do I need to charge my new rechargeable batteries when I receive them before the first use? Yes, before you use your new NiMH batteries for the first time you must charge them fully. The first several times that you use your NiMH batteries you may find that they run down discharge quickly during use. Not to worry, this is normal until the batteries actually form up. Use your equipment as you normally would until the batteries are discharged and need to be recharged. When charging rechargeable batteries, they do increase in temperature substantially due to internal resistance.
Thus, the batteries may feel warm when the charge is completed. This can certainly feel hot to some individuals. This is pretty much normal. The amount of discharge and of course the rate of charge will affect this. This is why we recommend the following:. It is best to allow any heat to dissipate as much as possible. Always allow your batteries to cool before placing them in your camera or equipment. The number of times you can recharge your batteries will depend on the operating parameters, such as drain rate, battery care, etc.
In general, under desirable conditions, NiMH batteries can last up to recharges. In absolute best conditions, NiMH batteries can last up to recharges. Although there are many things that will maximize the life of your NiMH batteries we have listed the most important below:. Never drop NiMH batteries on a floor or hard surface.
This can severely damage them. Be sure to use a well designed charger that will prevent overcharging. This is probably the biggest cause of premature failure of NiMH batteries - improper and over charging. Fastest is not always the best.
Never carry NiMH batteries loosely in your pocket. Coins or other metal items could cause them to short, thus causing severe burns, or even fire. Can I leave my batteries in the charger until I need to use it? When used with a overnight charger or a rapid charger with automatic switch off, NiMH batteries can be left in the charger for an extended period of time without leakage, explosion, or deformation.
Many people think that the former should be used, but the author believes that battery storage is more reasonable. If the battery is completely discharged and then stored, it will not be used for a long time. The self-discharge phenomenon of the battery will cause over-discharge of the battery.
Will damage the battery. In this issue, we are going to discuss the challenges of Lithium Polymer batteries especially since they suffer from a Read more. Introduction Lithium Polymer batteries Read more. People often try to restart an old cell phone that has been idle for a while or sitting in the Read more. Introduction In the last week, we described you all the details of lithium battery C-rating.
Today, we would discuss the Read more. Your email address will not be published. Skip to content. Table of Contents. How to properly store idle lithium batteries? What is the maximum discharge rate of Ni-MH battery?
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