SR516, SR516SW, SR62, LR516, LR62, 317 Battery Equivalents and Replacements
SR516, SR516SW, SR62, LR516, LR62, 317 button cell batteries are often used in wrist watches, toys, remotes, and similar low drain devices.
These batteries are manufactured by almost all most reputable battery brands and are easy to find at online shops and local hardware stores.
SR516, SR516SW, SR62, LR516, LR62, 317 button cell battery are rather small batteries with their dimensions of: diameter 5.8 mm and height 1.6 mm (0.2283 x 0.63 inches).
Like most of similar button cell batteries, SR516, SR516SW, SR62, LR516, LR62, 317 batteries are manufactured as alkaline and silver-oxide batteries:
- Alkaline batteries are commonly labeled as LR516 or LR62 and they are recognizable thanks to the 'LR' prefix, although some manufacturers use numbers only labels, but also describe the battery chemistry on the package of the battery - for example, some manufacturers use label 317 and sometimes even SR516 or SR516SW to indicate that their alkaline LR516 battery may be (at least in theory) be used as replacement for silver-oxide 317/SR516SW battery. And they state that their battery is alkaline battery on the package using rather small letters. Be aware of this!
Nominal voltage of LR62/LR516 batteries is 1.5 volts, but as the battery is used, voltage drops relatively quickly. Cut-off voltage depends on the device used, but generally it is around 1.0 volts for alkaline batteries.
Typical capacity of alkaline LR516 battery is around 7-8 mAh, also depending on the common temperature, drain current, battery age and similar. Sensitive electronic devices feature their own cutoff voltage that may be higher that 1.0 volts (for example, 1.2 volts) decreasing nominal capacity of LR516 batteries even further.
- Silver-oxide batteries are commonly labeled as SR516, SR516SW, SR62, 317 and similar. These batteries differ from alkaline batteries by mostly having prefix 'SR' (like SR516, SR516SW, SR62), although some brands use 'numbers only' labels (like '317') and similar.
In order to attract potential customers, most of the brands write down the labels of the models that their batteries actual replace.
Of course, this sometimes increase the confusion which battery to buy, but generally greatly simplifies finding proper battery replacement.
Nominal voltage of SR516, SR516SW, SR62, 317 batteries is 1.55 volts and typical capacity is in 10-12 mAh range, which is significantly more than alkaline typical capacity of 7-8 mAh, especially when used for devices like wrist and other watches, calculators, keyless car remotes, car security alarms, electronic organizers, computer CMOS memory battery etc.
Cut-off voltage of silver-oxide SR516, SR516SW, SR62, 317 batteries is ~1.2 volts, but this also depends on the cut-off voltage of the device in use - most electronic devices are designed to be powered with silver-oxide batteries because of more stable voltage, higher capacity and longer shelf life.
In any case, silver-oxide batteries have much more stable voltage than alkaline batteries and are preferred battery choice of many watch manufacturers like Fossil, Swatch, Casio, Timex etc.
Additional labels usually include '317' number and one letter indicating the manufacturer, although such labels are not always present. For example, D317 is (was) Duracell's label for 317 battery, V317 is (was) Varta's label etc.
Although modern SR516, SR516SW, SR62, LR516, LR62, 317 batteries don't contain mercury, lead or cadmium and are as such, environment friendly, they should be recycled properly after use.
Also, they are rather small batteries and may be swallowed by kids or even pets - fortunately, they are sometimes packaged in 'child-safe' packages, which means that even adults may have issues getting the battery out :)
While they don't contain poisonous compounds, at least not in any significant amount, they are rather harmful if swallowed - electrolytes in human body close the circuit and weak current causes reactions that are rather dangerous.
Although the capacity of these batteries is limited, it is enough to cause issues, to say the least.
Thus, if they get swallowed by child or pet, call the emergency service (or doctor, or vet), tell them what happened and act according to their instructions.
Long Story Short: if you need button cell battery 5.8 mm in diameter and 1.6 mm in height and you are not sure which one to get, follow these rules:
- LR516 or LR62 and similar are alkaline batteries: cheaper, but also less stable voltage, lower capacity with shorter shelf life (at most 3-4 years),
- SR516, SR516SW, SR62, 317 and similar are silver-oxide batteries: they cost slightly more, but have more stable voltage, higher capacity and longer shelf life (5-7+ years).
If you have wrist watch or any similar electronic device, be sure to get battery that is labeled SR516SW or silver-oxide 317. Personally, the price difference between alkaline and silver oxide batteries is very low and IMHO the features and performances of sliver-oxide batteries more than justify their price difference.