How can these batteries be both 3.7 AND 4.2 v?
489955
Because they are rated at 3.7v, but they are ~4.2v when fully charged. Just like a store bought alkaline battery, they are rated at 1.5v, but they are ~1.6v when new.
489956
For devices such as electronic cigarette that use variable ohms output, i.e.,1.2 to 2.5 coils. Your device manual probably species the volts, and amperage needed to work properly. I use these batteries for my evo e cigarette, they are rechargeable and durable. Good for the price. Once I bought a multiple of 4 and one of them was defective. I did not returned it, however, Amazon has a great customer service department. I have returned stuff before and never had any problems.
835188
The back of mine say, "7.4V 2500mAh" I have 4 of these. They're great for the money!
239239
Thank you for your interest with our product. Even though Original battery is rated at 7.2V because each cells contain 3.6V. With New technology nowadays each cells can make with 3.6V/3.7V for Macbook Pro aftermarket battery. Therefore, 7.2V and 7.4V will not produce any damage to your laptop at all. Your satisfaction is extremely important to us. It is how we measure the success of our firm. If you have any questions please feel free to contact us at (626)698-8163. Thank you for your support and it's our pleasure to assist you.
285574
What I received are 3.7 volt and 1650mAh. The one that came with my camera is marked 3.7v, but cannot tell what mAh. It's not marked anything readable. The voltage seems to be the important part as I've been using these interchangeably in my camera without problems.
1434995
1.2V Will not work in any toys or other things that require 1.5V. They also get very hot, while charging. Not a safe battery. Hope that helps.
1926162
3.8v and 3.7v are approximate voltage measurements for the "same" voltage. They should work the same.
586237
Batteries come in all shapes and sizes. Any 7.2+V battery will work, if it fits. You may also need to replace the connector or make/buy an adapter.
1315080
Near as I can tell they are all 3V Lithium Batteries but one is geared towards higher energy output vs. Low energy output like a watch or something with a low processing need. The B would be for a high output which is not a common use for this particular battery.
1666215
There is an OEM configuration difference in the batteries between the two platforms. Strange isn't it?
1434272
Be careful. There are two 24V batteries. One is call enhanced 24V battery which is not interchangeable with the standard 24V battery.
2162703
hello, i have this battery the voltage is 7.4volts. its a good replacement! i have the original sony battery and is rated at 6.8 volts. i also have a replacement batery from rayovac its a 7.2 volt. they all work great. this kit works very well with my camera. i'm happy with it. good deal for me thanks, gary
848977
There is not enough information here to provide a definitive answer. The batteries delivery the voltage and amperage they are designed for and are rechargeable. Not sure what else one can add to this that would be helpful.
797938
the batteries are 6-7.2 volts but I would never attempt to replace them myself!! easier to just replace whole awiffer.
765198
where in the world did you find an 18650 rated at 4.2 volts,ive never seen those
1923056
you the option to use 2 or 3 three batteries with the rechargable 3.7v li-ion batteries
1205649
I assume they are 4 12volt batteries. Ideal would be that all batteries in series share the same load and charge current. If you are only using it for very low current stuff, I don't thing you would have a problem connecting it across one of the 4 in series.
757987
3.7v vs. 3.8v is fairly insignificant. The real worry is if the voltage output of the new battery is higher than what the OEM battery is. The real question is the tru maH of the battery coupled with the claimed voltage output. As you use a battery, the output voltage will begin to drop a bit, especially under a heavy load. A 3.7v, 3250 maH battery is probably just as good as a 3.8v, 3100 maH battery.