{"product_id":"products-ag0-1-55v-button-cell-battery","title":"AG0 LR521  1.55V Button Cell Battery for Watch, Calculator, Car Key - 1\/5\/10\/20\/50\/100PCS","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eAG0 LR521 1.55V alkaline button cell battery is designed for small electronic devices such as watches, calculators, car key fobs, small toys, mini LED lights, compact remote controls, electronic thermometers and other low-power devices.\u003c\/p\u003e\n\n\u003cp\u003eThis battery is also commonly searched as AG0, LR521, LR63, SR521SW, SR63, 379, 379A or watch button cell battery. It is suitable for customers who need a compact 1.55V replacement battery for daily-use electronic devices.\u003c\/p\u003e\n\n\u003cp\u003eThe product is available in 1PCS, 5PCS, 10PCS, 20PCS, 50PCS and 100PCS package options, making it suitable for home backup, watch repair, calculator replacement, retail reselling and bulk purchase use in the EU market.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAG0 \/ LR521 \/ LR63 \/ SR521SW \/ 379 compatible button cell battery\u003c\/li\u003e\n\u003cli\u003e1.55V alkaline battery for watches, calculators, car keys and small electronics\u003c\/li\u003e\n\u003cli\u003eCompact button cell size for low-power electronic devices\u003c\/li\u003e\n\u003cli\u003eAvailable in 1PCS, 5PCS, 10PCS, 20PCS, 50PCS and 100PCS pack options\u003c\/li\u003e\n\u003cli\u003eSuitable for personal replacement, repair shops, small resellers and bulk buyers\u003c\/li\u003e\n\u003cli\u003eEasy to store as backup batteries for home, office or repair use\u003c\/li\u003e\n\u003cli\u003eNon-rechargeable alkaline button cell battery, ready to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eAG0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eLR521 \/ LR63 \/ SR521SW \/ SR63 \/ 379 \/ 379A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Type\u003c\/td\u003e\n\u003ctd\u003eAlkaline Button Cell Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e1.55V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRechargeable\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. Size\u003c\/td\u003e\n\u003ctd\u003e5.8 × 2.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eButton \/ Coin Cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eWatch, Calculator, Car Key, Toy, Small Remote Control, Mini LED Light, Small Electronic Device\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Options\u003c\/td\u003e\n\u003ctd\u003e1PCS \/ 5PCS \/ 10PCS \/ 20PCS \/ 50PCS \/ 100PCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp\u003eThis AG0 LR521 1.55V button cell battery is suitable for many small electronic products, including watches, calculators, car key fobs, small toys, mini LED lights, compact remote controls, electronic thermometers, small meters and other low-power devices.\u003c\/p\u003e\n\n\u003cp\u003eBefore purchasing, please check the original battery model, voltage, size and polarity of your device. If your device uses AG0, LR521, LR63, SR521SW, SR63, 379 or 379A batteries, this product can usually be used as a replacement.\u003c\/p\u003e\n\n\u003ch2\u003ePackage Options\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1PCS - suitable for single replacement use\u003c\/li\u003e\n\u003cli\u003e5PCS - suitable for home backup use\u003c\/li\u003e\n\u003cli\u003e10PCS - suitable for regular daily replacement\u003c\/li\u003e\n\u003cli\u003e20PCS - suitable for watch repair or small shop use\u003c\/li\u003e\n\u003cli\u003e50PCS - suitable for bulk users and resellers\u003c\/li\u003e\n\u003cli\u003e100PCS - suitable for wholesale, repair shops and long-term stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSafety Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a non-rechargeable alkaline button cell battery. Do not recharge.\u003c\/li\u003e\n\u003cli\u003eDo not short-circuit, disassemble, crush, puncture or expose the battery to fire.\u003c\/li\u003e\n\u003cli\u003eKeep batteries away from children and pets.\u003c\/li\u003e\n\u003cli\u003eInsert the battery according to the correct positive and negative polarity.\u003c\/li\u003e\n\u003cli\u003eDo not mix old and new batteries in the same device.\u003c\/li\u003e\n\u003cli\u003eStore in a dry, cool place away from direct sunlight and moisture.\u003c\/li\u003e\n\u003cli\u003ePlease confirm the battery model, voltage and size before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3\u003eCan this AG0 battery replace LR521, LR63, SR521SW or 379?\u003c\/h3\u003e\n\u003cp\u003eYes. AG0 is commonly compatible with LR521, LR63, SR521SW, SR63, 379 and 379A button cell batteries. Please confirm the voltage, size and device requirement before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eIs this AG0 LR521 button cell battery rechargeable?\u003c\/h3\u003e\n\u003cp\u003eNo. This AG0 LR521 1.55V alkaline button cell battery is non-rechargeable. Do not charge it.\u003c\/p\u003e\n\n\u003ch3\u003eCan this battery be used for watches?\u003c\/h3\u003e\n\u003cp\u003eYes. This AG0 \/ LR521 \/ 379 button cell battery is commonly used for watches and other small electronic devices that require this model and size.\u003c\/p\u003e\n\n\u003ch3\u003eCan it be used for calculators and car keys?\u003c\/h3\u003e\n\u003cp\u003eYes. It is suitable for calculators, car key fobs, small remote controls, toys and mini electronic devices that require AG0, LR521, LR63, SR521SW or 379 batteries.\u003c\/p\u003e\n\n\u003ch3\u003eWhich package options are available?\u003c\/h3\u003e\n\u003cp\u003eThis product is available in 1PCS, 5PCS, 10PCS, 20PCS, 50PCS and 100PCS package options.\u003c\/p\u003e\n\n\u003ch3\u003eWhat should I check before buying?\u003c\/h3\u003e\n\u003cp\u003ePlease check your original battery model, voltage, size and polarity. Make sure your device requires AG0, LR521, LR63, SR521SW, SR63, 379 or 379A type button cell battery.\u003c\/p\u003e","brand":"KLMXPS","offers":[{"title":"1 Particle","offer_id":53461229797655,"sku":"(TE)AG0 LR521 1PCS","price":6.39,"currency_code":"USD","in_stock":true},{"title":"5 Particle","offer_id":53461229830423,"sku":"(TE)AG0 LR521 5PCS","price":6.67,"currency_code":"USD","in_stock":true},{"title":"10 Particle","offer_id":53461229863191,"sku":"(TE)AG0 LR521 10PCS","price":7.01,"currency_code":"USD","in_stock":true},{"title":"20 Particle","offer_id":53461229895959,"sku":"(TE)AG0 LR521 20PCS","price":7.7,"currency_code":"USD","in_stock":true},{"title":"50 Particle","offer_id":53461229928727,"sku":"(TE)AG0 LR521 50PCS","price":9.78,"currency_code":"USD","in_stock":true},{"title":"100 Particle","offer_id":53461229961495,"sku":"(TE)AG0 LR521 100PCS","price":13.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/1946\/3703\/files\/ChatGPTImage2026_5_22_12_09_28_1.png?v=1779636426","url":"https:\/\/klmxps.com\/products\/products-ag0-1-55v-button-cell-battery","provider":"KLMXPS Battery store","version":"1.0","type":"link"}