{"product_id":"honeywell-thor-vm3-replacement-battery-74v-5200mah-li-ion","title":"Honeywell Thor VM3 Replacement Battery 7.4V 5200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHoneywell Thor VM3 — 7.4V Li-ion Replacement Battery (50139885-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 5200mAh Li-ion battery replaces the OEM unit in the Honeywell Thor VM3 vehicle mount terminal. The Thor VM3 is a windshield-mounted rugged computer used in logistics, delivery, and field service fleets. It cross-references OEM part numbers 50139885-001, L3-52301624A-R, OVT270L1R00, OVT270L1R01, and 50121692-001.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThor VM3 platform fit:\u003c\/strong\u003e\n    The VM3 uses a dedicated battery bay with a specific connector and BMS handshake tied to Honeywell's power management stack. This replacement matches that voltage rail and communication protocol so the terminal recognises the pack on boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through multiple charge and discharge passes on the VM3 platform. The BMS passed cell authentication, reported accurate state-of-charge to the terminal OS, and held voltage above the 6.0V cutoff threshold under sustained load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap pre-charge requirement:\u003c\/strong\u003e\n    Charge this battery fully before using it as a hot-swap unit. During vehicle ignition start, the VM3 draws peak current for the boot sequence — an undercharged hot-swap battery may not sustain the terminal through that 3–10 second gap, causing a cold reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHot-swap battery not bridging power during ignition start\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Thor VM3 relies on the hot-swap battery to keep the terminal alive during vehicle ignition cycling. When the main vehicle power drops momentarily at crank, the terminal pulls from the hot-swap pack. If that pack is below roughly 7.0V, the BMS may refuse to supply current under load, and the terminal resets. This is not a faulty battery — it is a charge-state issue. Bring the hot-swap battery to a full charge before swapping it into the hot-swap slot.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTerminal not booting when running on battery alone\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe VM3 requires a minimum voltage at the power rails before its boot sequence will initialise. A battery that has sat unused for several months may have self-discharged below that threshold — typically under 6.5V — and the terminal simply will not respond. Connect the terminal to vehicle power or an external charger for 20–30 minutes to bring the cell voltage back above 7.0V, then attempt a standalone boot again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428089823322,"sku":"BWCS-HVM300SL-1","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428089856090,"sku":"BWCS-HVM300SL-2","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428089888858,"sku":"BWCS-HVM300SL-3","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HVM300SL-1.webp?v=1779934014","url":"https:\/\/batteryweb.com\/products\/honeywell-thor-vm3-replacement-battery-74v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}