It is essential to change a 3-volt battery with another 3 volts. The first thing that is the same with these two batteries is that they are both 3-volt. They are both lithium batteries that cannot be recharged. Never recharge primary batteries.CR2 and CR123 batteries are similar in voltage of 3V. Wide temperature usage range: -20 C ~ +60 CĪpplications: Cameras, Medical treatment instrument, Lights, Radio, Electronic lock, Electronic meter (water meter, gas meter, etc), Power source of memory backup meterĬaution: This is one time use, primary, CR2 lithium battery. Maximum Pulse Discharge Current: 2250 mAh Maximum Constant Discharge Current: 1125mA Don't know much about them, except they work. As far as these, they seem to work ok for me. Sorry this doesn't really address your question directly, as far as eliminating waste, but their site doesn't show the type of altnernative you are asking about, and I hope you don't mind me just mentioning this as an economical solution, even though you didn't mention the cost factor. For breadboarding 6KV RF power electronics who really cares what the gold plating on the (soon to be melted) connectors looks like. (*) I am presently using a lot of 'recycled' Chinese factory waste, paying $2 for an RF power connector rather than $45. It has to, as users will shove most anything that fits into that ole' battery hole. Well designed equipment that uses batteries will take most any power you throw at it and not get damaged. It is always a good idea to check that the battery is sold for "photographic applications". There are some CR123-sized Li batteries that are meant for non-photographic applications - they are considerably cheaper but they can't run a camera because the internal resistance is too high. That isn't to say there may not be problems. Expect the motor to run slower and the flash to take longer to charge as the batteries age, that's about it. (*)Īmperage considerations aren't a big concern in a photographic application. No-name ebay Chinese batteries may be very good or they may be factory rejects sold by a recycling firm. Unless you are dealing directly with the battery maker as an OEM it is difficult to know just what sort of Li-Ion battery you are buying. There are lots and lots of different Li-Ion chemistries available and some are better or worse than others for self-discharge, charge-cycle lifetimes, internal resistance, discharge profile, etc., etc. In comparison, non-rechargeable Li cells keep their power for 10 years or more (I have some that are going strong after 30 years ). Keeping them at-the-ready in an unsophisticated charger really eats into their life. They loose power just sitting around and are in constant need of recharging. Li-Ion cells have quite a few dissadvantages at the consumer level. Lithium isn't happy when it is let out to play with the other elements. Li-Ion cells can not be charged in a series configuration without special monitoring terminals - charging Li-Ion cells without monitoring can lead to jetting flames from the batteries. There are companies that will make you up a 15x54mm 6V Li-Ion battery pack if you really truly want one, but it will: (1) cost a whole lot more than two bog standard "Li-Ion CR2's" (2) not fit any commercially available charger. Newer Li-Ion batteries are rated at the same 3.0V output voltage as Li cells, and some 15270's are sold as "rechargeable CR2 batteries". There is a "15270" Li-Ion battery in the same size as a CR2. A CR2 is 15mm diameter by 27 mm long a double long would by 15mm by 54mm - not a standard size, and you would need one with a 6V output.
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