{"product_id":"t-mobile-galaxy-stratosphere-ii-4g-replacement-battery-37v-1500mah-li-ion","title":"T-Mobile Galaxy Stratosphere II 4G Replacement Battery 3.7V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eT-Mobile Galaxy Stratosphere II 4G — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1500mAh Li-ion replacement battery for the Samsung Galaxy Stratosphere II 4G on T-Mobile's network. It fits the Galaxy Stratosphere II and Galaxy Stratosphere 2 variants. Swap it in when your original cell no longer holds a usable charge through a normal day.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStratosphere II variant compatibility:\u003c\/strong\u003e\n    The Galaxy Stratosphere II, Stratosphere II 4G, and Stratosphere 2 all share the same battery bay dimensions (69.80 × 51.90 × 4.20mm), voltage rail, and connector pinout — one cell fits every variant in this lineup without modification.\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 Stratosphere II unit and confirmed the BMS handshake completed without fault flags. The protection circuit engaged correctly at low-voltage cutoff and did not trip during normal charge current.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    On first use after installation, run one full discharge down to auto-shutoff, then charge uninterrupted to 100% before normal use. This gives the fuel gauge IC a complete discharge curve to map against the new cell — skipping this step is the primary cause of erratic percentage readings in the first few days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the Stratosphere II after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Stratosphere II's fuel gauge IC retains the discharge curve from the old, degraded cell. When you install a fresh cell, the IC has no accurate reference for where the new cell's voltage cliff sits. Under modem load — LTE data, a call, or screen-on with sync active — the cell voltage drops faster than the IC expects and the phone cuts out to protect the hardware. The fix is a full calibration cycle: discharge to auto-shutoff, then charge to 100% without interruption. After one complete cycle, the coulomb counter recalibrates and percentage readings stabilise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone feels warm near the battery compartment during first charge after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell typically has higher internal impedance than a broken-in cell. When the charge IC pushes current into a high-impedance cell, more energy is lost as heat — this is normal for the first one or two charge cycles and not a sign of a fault. Warmth should stay moderate and reduce noticeably by the second or third full charge. If the phone becomes hot to the touch or charge cuts off before 100%, remove the battery and check that it is seated flat with no bulge before proceeding.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404344492122,"sku":"BWCS-SMT699SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404344524890,"sku":"BWCS-SMT699SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404344557658,"sku":"BWCS-SMT699SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMT699SL-1.webp?v=1779369820","url":"https:\/\/batteryweb.com\/products\/t-mobile-galaxy-stratosphere-ii-4g-replacement-battery-37v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}