377 watch battery replacement12/9/2023 if the battery code starts with the 'S', then it is a 'silver-oxide' R626 coin cell (SR626, SR66, SR626SW). if the battery code starts with the 'L', then it should be an alkaline R626 battery (LR626, LR66, AG4), However, sometimes manufacturers mark silver-oxide batteries with both SG4 (correct) and AG4 (not correct) to emphasize that their battery is a replacement for AG4/SG4/LR66/SR66/LR626/SR626/SR626SW battery. AG4 vs SG4: AG4 should be 'alkaline G4' and SG4 should be 'silver-oxide G4' battery. In short, if you need LR626/SR626 wrist watch battery, go for an SR626 or SR626SW battery. Since these batteries are rather small, so is their price per individual battery. LR626 (alkaline) or SR626 (silver-oxide) capacities depend on the chemistry, but also on the cut-off voltage of the used device - alkaline batteries' voltage quickly drops, making them not so suitable for electronic devices like wrist watches and similar. Many manufacturers use their own labels for these batteries, but they also tend to add IEC and other standard codes, including short descriptions about the chemistry, nominal voltage, battery equivalents, and similar. Sometimes shorter, two-digit code is used: LR66 for alkaline and SR66 for silver-oxide batteries. SR626SW/LR626 batteries feature a physical dimensions of (DxH) of 2.6 x 6.8 mm (~0.1023 x 0.2677 inches).Īccording to the IEC standard, and depending on their chemistry, these batteries should be labeled LR626 (alkaline) or SR626 (silver-oxide) batteries, and according to the ANSI standard, 1176SO batteries. SR626SW, LR626, 377, AG4 Battery Features and Specifications These batteries are commonly found in wrist watches, calculators, and similar small electronic devices requiring a reliable power source. AG4, LR626, LR66, 177/376/377, SR626, SR626SW Battery EquivalentsĪG4, LR626, LR66, 177/376/377, SR626, and SR626SW batteries are very popular non-rechargeable button/coin cell batteries, available in several chemistries and manufactured by practically all battery brands.
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