{"product_id":"gigabyte-gsmart-replacement-battery-37v-1700mah-li-ion","title":"Gigabyte gSmart UBI-4-1300 Replacement Battery 3.7V 1700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGigabyte gSmart — 3.7V Li-ion Replacement Battery (UBI-4-1300)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1700mAh Li-ion replacement battery for the Gigabyte gSmart smartphone. It fits the gSmart line directly, restoring power when the original cell has degraded past useful capacity. Rated at 6.29Wh — match this figure against your current battery label before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003egSmart platform fit:\u003c\/strong\u003e\n    The gSmart series shares a common battery bay and connector across its early touchscreen handsets. The UBI-4-1300 cell matches that footprint — same contact orientation, same voltage rail — so the charge IC recognises it without negotiation.\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 a gSmart unit. The BMS accepted charge from cold, held the 3.7V nominal rail through mid-cycle, and tripped the protection circuit cleanly at the low-voltage cutoff floor rather than dropping abruptly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging runs against an uncalibrated coulomb counter — which is what causes early erratic percentage readings.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the gSmart reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches real cell behaviour — the IC is measuring against the wrong reference. You'll see the percentage jump, stall, or read high until the phone runs at least one full uninterrupted cycle. A full discharge to auto-shutdown followed by a charge to 100% without interruption resets the coulomb counter against actual cell capacity. After one cycle, percentage accuracy normalises.\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 is a voltage cliff, not a capacity problem. At around 20–30% state-of-charge, the cell's internal resistance rises enough that screen or modem load pulls voltage below the 3.0V protection threshold — the BMS cuts output instantly. It looks like a crash but the battery is actually responding correctly. The fix is the same full calibration cycle: run the phone down to forced shutdown under normal use, then charge uninterrupted to 100%. If shutdowns persist below 3.2V under load after two full cycles, the cell's internal resistance is outside spec and should be returned.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405153435738,"sku":"BWCS-UB401XL-1","price":31.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43405153468506,"sku":"BWCS-UB401XL-2","price":36.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43405153501274,"sku":"BWCS-UB401XL-3","price":40.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UB401XL-big.webp?v=1779370298","url":"https:\/\/batteryweb.com\/products\/gigabyte-gsmart-replacement-battery-37v-1700mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}