{"product_id":"furuno-cr2450-3v-lithium-battery-for-gp1650","title":"Furuno CR2450 3V Lithium Battery for GP1650 (001-428-240-00)","description":"\u003cp class=\"nvn-hero\"\u003eThis is the OEM Furuno CR2450 lithium battery for the GP1650 and GP1650F chartplotters. It's the little 3-volt coin cell that keeps your waypoints, routes, and clock alive when the unit is powered down at the dock. When yours finally fades, this exact part is the fix.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Furuno GP1650 has been running on helms for years, and like a lot of chartplotters from its era, it leans on a small internal battery to hold onto your settings. That's what this part is. A CR2450 lithium coin cell, 3 volts, the exact backup cell Furuno spec'd for the GP1650 and GP1650F. It isn't the main power source. The unit runs off your boat's 12-volt supply. This little cell just keeps the memory alive when everything's switched off at the dock. Think of it as the plotter's memory keeper, nothing more, nothing less.\u003c\/p\u003e\n\u003cp\u003eHow do you know yours is going? The tell is almost always the same. You fire up the plotter and your waypoints are gone, or the clock has reset, or the whole thing boots like it just came out of the box. On a lot of GP1650s that shows up somewhere around the six to eight year mark, which is right on schedule for a coin cell that's been quietly holding memory that whole time. If your unit powers up fine but forgets everything the moment you cut power, a fresh battery is the first thing to try.\u003c\/p\u003e\n\u003cp\u003eThis is a CR2450, and that number matters. It's a specific coin cell size, not the same as the smaller cells you'll find in a car key fob or a bathroom scale. Don't guess and grab whatever 3-volt button cell is in the junk drawer. Use the CR2450 that's spec'd for the job so it seats right and holds memory the way the GP1650 expects. It's the difference between a battery that works and one that rattles around loose or won't make solid contact at all.\u003c\/p\u003e\n\u003cp\u003eNow, the install. This isn't a slide-out tray like your TV remote. The backup cell lives on the GP1650's main board, so getting to it means opening the case and working around the electronics inside. Most folks who tackle it themselves desolder the old cell and fit the new one in its place. Take your time with the ribbon cable when you open things up. It's easy to stress or tear if you pry the case too far, and that turns a cheap battery job into a much bigger repair. If you're not comfortable with a soldering iron near a circuit board, there's no shame in handing it to a tech.\u003c\/p\u003e\n\u003cp\u003eTwo things worth calling out. First, watch your polarity on the way back in. Get the cell in backwards and you can wipe the settings memory instead of restoring it. Second, this is a boat, and boats live in salt air. If your GP1650 is mounted at an open console that catches spray, check the battery contacts for corrosion while you're in there. A light touch of dielectric grease on the terminals helps keep the connection clean for years.\u003c\/p\u003e\n\u003cp\u003eHere's a bit of dock wisdom. If your GP1650 is the only plotter at the helm and you rely on waypoints you can't easily re-enter, think about swapping the backup cell before it strands you, not after. A coin cell gives you very little warning. It holds memory fine right up until the day it doesn't. Doing the swap on a quiet weekend at the slip beats losing a season of fishing spots the first cold morning the battery finally gives out. It's a few dollars of insurance for years of saved data.\u003c\/p\u003e\n\u003cp\u003eAnd to be clear about what this doesn't fit. The GP1650 and GP1650F are their own generation. This backup cell is spec'd for those units, not for Furuno's later NavNet plotters, which handle memory differently. If you're working on a GP1650 or GP1650F, this is your part. Order it, do the swap, and get your waypoints back where they belong.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eCR2450 lithium coin cell, 3 volts, the exact backup battery Furuno spec'd for the GP1650\u003c\/li\u003e\n  \u003cli\u003eOEM part number 001-428-240-00, so there's no cross-reference guesswork\u003c\/li\u003e\n  \u003cli\u003eKeeps waypoints, routes, and the clock alive while the plotter is powered down\u003c\/li\u003e\n  \u003cli\u003eFits both the Furuno GP1650 and GP1650F chartplotters\u003c\/li\u003e\n  \u003cli\u003eBoard-mounted backup cell that replaces the original, which typically fades around the 6 to 8 year mark\u003c\/li\u003e\n  \u003cli\u003eStandard CR2450 size, not interchangeable with smaller 3-volt button cells\u003c\/li\u003e\n  \u003cli\u003eLithium chemistry for stable, long-term memory retention in a marine helm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Furuno reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat battery does the Furuno GP1650 use?\u003c\/summary\u003e\n    \u003cp\u003eIt uses a CR2450 3-volt lithium coin cell, Furuno part number 001-428-240-00. That's the internal memory-backup cell, not the unit's main power.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does this battery actually do?\u003c\/summary\u003e\n    \u003cp\u003eIt's the memory backup. It holds your waypoints, routes, and the clock while the plotter is switched off. Your boat's 12-volt supply runs the unit when it's powered on.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I know the battery is failing?\u003c\/summary\u003e\n    \u003cp\u003eThe classic sign is lost memory. You power up and your waypoints are gone, the time has reset, or the unit boots like it's brand new. If it forgets everything the moment you cut power, the backup cell is the first thing to replace.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long should the battery last?\u003c\/summary\u003e\n    \u003cp\u003eOwners commonly get somewhere in the six to eight year range before a GP1650 backup cell fades. A coin cell gives little warning, so if yours is that old, it's worth swapping proactively.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a drop-in battery or does it need soldering?\u003c\/summary\u003e\n    \u003cp\u003eIt's not a slide-out cell. The backup battery sits on the GP1650's main board, so replacing it usually means opening the case and desoldering the old cell. If you're not comfortable with that, a marine electronics tech can handle it quickly.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it fit the GP1650F as well?\u003c\/summary\u003e\n    \u003cp\u003eYes. This cell is the correct backup for both the GP1650 and the GP1650F. It's spec'd for that generation, not for Furuno's later NavNet plotters.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I substitute a different 3-volt coin cell?\u003c\/summary\u003e\n    \u003cp\u003eStick with the CR2450. Other 3-volt button cells are physically different sizes and won't seat or perform the same. The CR2450 is what the GP1650 was designed around.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAny tips to make the replacement last?\u003c\/summary\u003e\n    \u003cp\u003eWatch your polarity going back in, take care with the ribbon cable when you open the case, and wipe a little dielectric grease on the contacts to fight corrosion. Salt air is hard on open-console helms.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eFuruno CR2450 Lithium Battery for GP1650\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eFuruno\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e001-428-240-00\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e611679374998\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBattery Type\u003c\/th\u003e\n\u003ctd\u003eCR2450\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eChemistry\u003c\/th\u003e\n\u003ctd\u003eLithium\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e3 Volts\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCell Format\u003c\/th\u003e\n\u003ctd\u003eCoin \/ button cell\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003ctd\u003eInternal memory backup battery\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Models\u003c\/th\u003e\n\u003ctd\u003eFuruno GP1650, GP1650F\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal Diameter\u003c\/th\u003e\n\u003ctd\u003e24.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal Height\u003c\/th\u003e\n\u003ctd\u003e5.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVendor Part Number (Keystone VCPN)\u003c\/th\u003e\n\u003ctd\u003eFUR0142824000\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eOEM replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What battery does the Furuno GP1650 use?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It uses a CR2450 3-volt lithium coin cell, Furuno part number 001-428-240-00. That's the internal memory-backup cell, not the unit's main power.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does this battery actually do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's the memory backup. It holds your waypoints, routes, and the clock while the plotter is switched off. Your boat's 12-volt supply runs the unit when it's powered on.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I know the battery is failing?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The classic sign is lost memory. You power up and your waypoints are gone, the time has reset, or the unit boots like it's brand new. If it forgets everything the moment you cut power, the backup cell is the first thing to replace.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long should the battery last?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Owners commonly get somewhere in the six to eight year range before a GP1650 backup cell fades. A coin cell gives little warning, so if yours is that old, it's worth swapping proactively.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a drop-in battery or does it need soldering?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's not a slide-out cell. The backup battery sits on the GP1650's main board, so replacing it usually means opening the case and desoldering the old cell. If you're not comfortable with that, a marine electronics tech can handle it quickly.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it fit the GP1650F as well?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. This cell is the correct backup for both the GP1650 and the GP1650F. It's spec'd for that generation, not for Furuno's later NavNet plotters.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I substitute a different 3-volt coin cell?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Stick with the CR2450. Other 3-volt button cells are physically different sizes and won't seat or perform the same. The CR2450 is what the GP1650 was designed around.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Any tips to make the replacement last?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Watch your polarity going back in, take care with the ribbon cable when you open the case, and wipe a little dielectric grease on the contacts to fight corrosion. Salt air is hard on open-console helms.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Furuno","offers":[{"title":"Default Title","offer_id":45048080728157,"sku":"2008322","price":33.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_25391cd8-2ccc-43f7-ad69-b015f55d63ad.png?v=1789354899","url":"https:\/\/nvnmarine.com\/products\/furuno-cr2450-3v-lithium-battery-for-gp1650","provider":"NVN Marine","version":"1.0","type":"link"}