{"product_id":"doro-332-replacement-battery-37v-1050mah-li-ion","title":"Doro 332 Replacement Battery 3.7V 1050mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDoro 332 \/ 332GSM — 3.7V Li-ion Replacement Battery (HARE)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1050mAh Li-ion cell that replaces the original HARE battery in the Doro 332 and 332GSM. The Doro 332 is a senior-focused basic mobile phone with simplified controls and essential calling and messaging functions. Fit is direct — same voltage, same OEM part number, same form factor at 53.00 × 33.90 × 5.60mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e332 and 332GSM compatibility:\u003c\/strong\u003e\n    Both variants share the same battery bay dimensions and the same HARE part number. The voltage rail and connector are identical across these two models, so one cell covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the 332 platform. The BMS handshake completed without fault codes, and the protection circuit responded correctly to low-voltage cutoff thresholds during discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable any fast-charge mode and run one complete discharge-to-charge cycle before normal use. The fuel gauge IC in the 332 is calibrated to the old cell's discharge curve — one full cycle lets it map the new cell's actual capacity before trusting the percentage readout.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Doro 332 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 332 uses a fuel gauge IC that tracks capacity by counting charge in and out of the cell — a process called coulomb counting. When you swap to a new cell, the IC still holds the old discharge curve in memory. Until it runs one full discharge-charge cycle, it maps current charge level against the wrong reference and reports inaccurate percentages. This is not a fault with the replacement cell. One full cycle — drain to automatic cutoff, then charge uninterrupted to 100% — resets the reference and restores accurate readings.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under load — typically during a call, when the GSM radio draws a short burst of current. At that load spike, the cell voltage dips below the BMS cutoff threshold even though the gauge still shows 20–30%. It is a voltage cliff, not a capacity fault. The fix is the same full recalibration cycle: let the phone discharge to automatic shutdown, then charge to 100% without interruption. After one cycle the gauge IC sets a more accurate low-voltage warning point, usually above 3.4V, and the premature shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405115392090,"sku":"BWCS-HFC250SL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405115424858,"sku":"BWCS-HFC250SL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405115457626,"sku":"BWCS-HFC250SL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HFC250SL-1.webp?v=1779369992","url":"https:\/\/batteryweb.com\/products\/doro-332-replacement-battery-37v-1050mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}