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batteries plus
Sorry, there was a problem. Please try again later.This pulse Oximeter takes a lithium 1/2AA size battery which is also known as a size 14250. It can be any 14250, the CR14250 Non-Rechargeable are usually a little cheaper($5-$7) while the rechargeable ones cost a little more ($9-$10 but less in a multi-pack) but are by far the better buy. Good chargers are very inexpensive on Amazon/ebay. The prefix on the battery usually stand for the type/mixture of Lithium being used in the battery, such as LS14250 is Lithium thionyl chloride ( LI-SOCI2), or, Lithium Manganese Dioxide (Li-MnO), etc. I have found that for now, as improvements happen within weeks it seems these days, Lithium Manganese Dioxide (or one of it's similar cousins) are my favorites for things like LED flashlights or other handheld devices as they are a High-Drain battery, meaning that they are able to continuously put out their rated voltage until the battery is nearly depleted and then it falls off quickly to the device without dropping the batteries internal voltage much below 3.0-3.2 volts. So when the device starts acting like the battery "died" it won't "kill" the batteries ability to recharge. The number one killer of rechargeable Li-Ion batteries is letting them discharge too much. The lower the battery's voltage the harder it is to recharge, if a Li-Ion battery's voltage falls too low then it is essentially dead as it will no longer take a charge. So when the device starts to show signs of a power loss it is time to recharge the batteries. Lithium batteries, unlike NiMH (Nickel Metal Hydride) rechargeable batteries can hold their charge for many months, even a year or more without losing any of their stored energy. So you can always have some fully charged and just pop one into the device that needs it and recharge the drained one and put it back into the rotation in your battery drawer.
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