{"product_id":"300-03866-7-2v-3700mah-battery-compatible-with-lynx-lyric","title":"300-03866 7.2V 3700mAh Battery Compatible with Lynx \u0026 Lyric","description":"\u003cp\u003eIn this review the focus is a simple replacement battery for alarm control panels: the 300-03866 7.2V 3700mAh Ni-Mh pack. The bottom line is that this cell is for homeowners or installers who need a direct, high-capacity swap for Lynx and Lyric alarm keypads and controllers; it delivers a near-identical fit and voltage to the original parts. Our review finds it particularly useful when the original pack is failing or the system reports low battery, since it matches the original part numbers and uses the same three-prong connector.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Matches original part numbers such as 300-03866 and LCP500-4B so it fits Lynx 5100, 5200, 5210 and Lyric devices without modification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Capacity:\u003c\/strong\u003e The 3700mAh Ni-Mh capacity provides a higher reserve than older low-capacity packs, helping systems stay powered during short outages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Match:\u003c\/strong\u003e At 7.2V the pack uses the same nominal voltage as factory batteries, ensuring reliable communication with the alarm control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Uses the required 3-prong connector so installers can swap it in quickly without soldering or adapter cables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-in Replacement:\u003c\/strong\u003e Marketed as 100% compatible with the original, making it a straightforward maintenance item for security systems showing low battery alerts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis battery is aimed at homeowners, service technicians, and small alarm companies that maintain Honeywell Lynx and Lyric series control panels and keypads. If the installed system shows a battery fault or you need a preventative replacement for an older pack, the matched part numbers and connector type make this a practical choice.\u003c\/p\u003e\n\u003cp\u003eUsers who should look elsewhere include those with alarm models outside the Lynx\/Lyric family or anyone who cannot confirm their part number; the listing emphasizes checking the part number before purchase, so do not assume universal fit across different alarm brands.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGood physical fit and connector compatibility with Lynx 5100\/5200\/5210 and Lyric units, reducing installation time.\u003c\/li\u003e\n\u003cli\u003eHigher 3700mAh capacity compared with many older packs, which can extend backup time in short outages.\u003c\/li\u003e\n\u003cli\u003ePositive reports on build quality and value for money from several users who found it a correct replacement.\u003c\/li\u003e\n\u003cli\u003eClear listing of original and compatible part numbers to avoid fitment errors when checked first.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCustomer feedback on actual battery life is mixed, so long-term runtime may vary by unit and usage.\u003c\/li\u003e\n\u003cli\u003eRequires verification of the part number and three-prong connector; not a universal battery for all alarm systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003e300-03866, LCP500-4B, LYNXRCHKIT-SHA, OSA214\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eLynx 5100, 5200, 5210, Lynx Touch 5210, Lynx Touch 7000, Lyric Controller\/Keypad\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Chemistry\u003c\/td\u003e\n\u003ctd\u003eNi-Mh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e7.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e3700mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e3-prong connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 300-03866 7.2V 3700mAh pack is a practical, cost-effective replacement for Lynx and Lyric alarm systems when the correct part number and connector are confirmed. It offers higher capacity than older factory packs and a straightforward drop-in fit, making it a smart choice for routine maintenance or when an existing battery is failing, though actual runtime results can vary.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my Lynx 5200?\u003c\/strong\u003e\u003cbr\u003eYes, it is listed compatible with Lynx 5200 provided your unit uses the same original part number and the 3-prong connector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the chemistry the same as the original?\u003c\/strong\u003e\u003cbr\u003eYes, this replacement uses Ni-Mh chemistry at 7.2V, matching the typical factory specification for these control panels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need tools to install it?\u003c\/strong\u003e\u003cbr\u003eInstallation is usually plug-and-play with the 3-prong connector, but basic access tools for the alarm enclosure may be required.\u003c\/p\u003e","brand":"GSUIVEER","offers":[{"title":"Default Title","offer_id":48232506294491,"sku":"B09C6DH988","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/616eLSIOH2L._AC_SL1500.jpg?v=1770748954","url":"https:\/\/gearmusthave.com\/products\/300-03866-7-2v-3700mah-battery-compatible-with-lynx-lyric","provider":"GearMustHave","version":"1.0","type":"link"}