{"product_id":"ticwatch-pro-replacement-battery-385v-400mah-li-polymer","title":"Ticwatch Pro 3.85V Replacement Battery SP452929SF 400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTicwatch Pro \/ Pro 4G — 3.85V Li-Polymer Replacement Battery (SP452929SF)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 400mAh Li-Polymer cell (SP452929SF) for the Ticwatch Pro and Pro 4G smartwatch. It replaces the original cell when capacity fade causes noticeably shorter battery life between charges. Dimensions are 27.30 × 27.70 × 4.30mm — confirm your existing cell matches before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePro and Pro 4G compatibility:\u003c\/strong\u003e\n    Both models share the same 3.85V battery bay, connector pinout, and BMS handshake. The SP452929SF part number covers both variants — no hardware modification needed to fit either watch.\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 Pro platform and confirmed the BMS accepted the new cell without triggering a protection cutoff. The fuel gauge IC re-calibrated correctly after a full charge from near-zero.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge reset after swap:\u003c\/strong\u003e\n    Place the watch on its magnetic charger immediately after fitting this cell and charge to 100% before first use. The fuel gauge IC on the Pro platform cannot set an accurate reference point without a complete charge cycle from near-zero following a cell replacement.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Ticwatch Pro 4G drains faster with always-on display and continuous HR active\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Pro 4G runs a dual-display stack — an FSTN layer for ambient mode and an AMOLED layer for full colour. When both are active alongside continuous heart rate polling, the combined draw is significantly higher than single-display smartwatches at the same capacity. The HR sensor fires at short intervals to maintain a continuous reading, and each poll adds a measurable current spike. On a 400mAh cell, this combination will shorten the charge interval compared to lighter usage profiles. Switching HR to on-demand rather than continuous is the fastest way to extend time between charges on this platform.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWatch not pairing to phone after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery terminates the active BLE session without a clean shutdown. The phone retains the old pairing record, but the watch starts fresh with no session state — the two devices no longer share a valid bond key. Simply restarting Bluetooth on the phone will not resolve this. Open the Mobvoi app, remove the existing device entry, then re-pair from scratch through the app's add-device flow to re-establish a clean BLE bond.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416150245466,"sku":"BWCS-TWE140SH-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416150278234,"sku":"BWCS-TWE140SH-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416150311002,"sku":"BWCS-TWE140SH-3","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TWE140SH-1.webp?v=1779760485","url":"https:\/\/batteryweb.com\/products\/ticwatch-pro-replacement-battery-385v-400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}