{"product_id":"efco-sirius-700-replacement-battery-18v-2500mah-li-ion","title":"Efco Sirius 700 18V 2500mAh Compatible Battery 6.445-098.0","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEfco Sirius 700 — 18V Li-ion Replacement Battery (6.445-098.0)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 18V Li-ion battery replaces part number 6.445-098.0 on the Efco Sirius 700 cordless lawn mower. It runs at 2500mAh (45Wh) and powers the mower's blade motor and cutting system. The connector and BMS handshake match the original Sirius 700 battery specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSirius 700 platform fit:\u003c\/strong\u003e\n    The Sirius 700 uses an 18V rail with a BMS that monitors cell voltage and current draw during blade engagement. This replacement matches the original voltage, cell count, and BMS communication protocol so the mower draws power without fault codes or cutouts on normal grass conditions.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through simulated blade-start inrush loads. The BMS held stable across repeated high-draw events and balanced cells correctly through discharge. No premature cutoff was triggered at rated load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCold-weather start tip:\u003c\/strong\u003e\n    Before the first mow of the season, bring the battery indoors overnight if temperatures are below 10°C. Cold Li-ion cells have higher internal resistance, and the blade motor's inrush current can trip the BMS on a cold pack before it even begins cutting.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff on thick-grass or wet-grass blade load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the Sirius 700 blade hits dense or wet grass, motor inrush current spikes sharply. If the BMS reads that spike as an overcurrent event, it shuts the pack down as a protection measure — not a fault in the battery. Let the mower sit for 30 seconds, re-seat the battery, and restart. Mowing in overlapping passes rather than single wide rows keeps peak current draw below the BMS trip threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger not accepting the pack after winter storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA pack left in the garage through winter can self-discharge below the charger's minimum acceptance voltage, typically around 12–13V for an 18V Li-ion pack. Most chargers refuse to begin a charge cycle below this threshold and show a fault light. To recover the pack, some chargers support a low-current recovery or \"wake\" mode — check your charger's manual for this function. If recovery mode is not available, a bench charger set to Li-ion at 0.1A can bring the pack voltage up to acceptance level before switching to normal charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381310324826,"sku":"BWCS-AKR100VX-1","price":55.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381310357594,"sku":"BWCS-AKR100VX-2","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381310390362,"sku":"BWCS-AKR100VX-3","price":72.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AKR100VX-1.webp?v=1778899944","url":"https:\/\/batteryweb.com\/products\/efco-sirius-700-replacement-battery-18v-2500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}