{"product_id":"husqvarna-modul-b-replacement-battery-37v-900mah-li-polymer","title":"Husqvarna Modul-B Compatible Battery 3.7V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHusqvarna Modul-B \/ GSM-GPS — 3.7V Li-Polymer Replacement Battery (535 0636-01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 900mAh Li-Polymer battery replaces the original power cell in Husqvarna Modul-B and GSM-GPS systems. It matches OEM part numbers 535 0636-01, 535 0962-01, 575 24 24-01, 575 24 24-02, and 575 24 24-03. Dimensions are 50.25 x 30.92 x 6.40mm — a direct physical match to the factory cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModul-B and GSM-GPS platform fit:\u003c\/strong\u003e\n    Both the Modul-B and GSM-GPS units share the same 3.7V cell footprint and BMS voltage thresholds. The connector pinout and physical envelope are identical across all five OEM part numbers listed above — no adapter or modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the Modul-B platform. The BMS accepted the pack without fault codes, held the nominal 3.7V rail cleanly, and the protection circuit triggered correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eSeasonal storage tip:\u003c\/strong\u003e\n    If the mower sits unused over winter, remove the Modul-B battery and store it at around 50% charge indoors. Leaving a Li-Polymer cell in a cold shed at low state-of-charge accelerates voltage drop below the BMS acceptance threshold — the charger will then refuse the pack in spring.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger showing fault after the mower sat in the garage all winter\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge slowly over months. If the pack drops below approximately 2.5V per cell, the charger's input detection circuit sees the voltage as out-of-range and throws a fault rather than beginning a charge cycle. This is a protection response, not a charger failure. Some chargers have a trickle or recovery mode — check the Husqvarna charger indicator sequence for a slow-flash pattern that signals recovery charging is active. If the charger shows no recovery mode and the pack reads below 2.5V on a multimeter, the cell has discharged beyond recoverable range and replacement is the correct step.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMower cuts out mid-row then restarts a few minutes later\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis points to thermal protection, not a faulty battery. The blade motor draws a surge of current through thick or wet grass, which heats the cell and trips the BMS over-temperature cutoff. The unit restarts once the cell cools — typically after a 5-minute pause. If this happens repeatedly in normal dry conditions, check that the battery contacts are clean and making full contact, since a high-resistance connection generates additional heat at the cell terminal. Allow a full 5-minute cooldown before resuming, and avoid running consecutive heavy-load passes without short breaks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381302820954,"sku":"BWCS-HTA102VX-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381302853722,"sku":"BWCS-HTA102VX-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381302886490,"sku":"BWCS-HTA102VX-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HTA102VX-1.webp?v=1778899964","url":"https:\/\/batteryweb.com\/products\/husqvarna-modul-b-replacement-battery-37v-900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}