{"product_id":"metropcs-pinnacle-2-replacement-battery-37v-800mah-li-ion","title":"MetroPCS Pinnacle 2 Replacement Battery 3.7V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMetroPCS Pinnacle 2 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V Li-ion battery rated at 800mAh (2.96Wh) for the MetroPCS Pinnacle 2 smartphone. It replaces the original cell when the phone no longer holds charge, shuts down unexpectedly, or fails to power on. The battery matches the OEM voltage and form factor at 42.50 x 35.50 x 5.00mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePinnacle 2 cell fit:\u003c\/strong\u003e\n    The Pinnacle 2 uses a compact 3.7V single-cell architecture. This replacement matches that voltage rail and physical footprint, so the battery connector seats without modification and the BMS communicates normally with the phone's charge IC.\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 under modem-active and screen-on loads. The BMS held cutoff voltage correctly and did not trip under the brief current spikes that occur during call connection.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, run one complete discharge down to auto-shutdown, then charge uninterrupted to 100% before using the phone again. This lets the fuel gauge IC map the new cell's discharge curve and report accurate percentages from the start.\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 Pinnacle 2 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff problem, not a capacity problem. At low state of charge, the new cell's internal resistance causes the voltage to drop sharply under modem or screen load — faster than the old degraded cell the fuel gauge was calibrated to. The phone's protection circuit reads that voltage drop as a critical low and shuts down, even though the reported percentage looks safe. One full discharge-charge cycle recalibrates the coulomb counter and moves the shutdown trigger to the correct point on the new cell's curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePercentage jumping erratically after fitting the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Pinnacle 2's fuel gauge IC stores a learned discharge curve from the previous battery. When a new cell goes in, that stored curve no longer matches actual cell behavior, so the reported percentage skips or reads incorrectly — sometimes dropping 10% in seconds or jumping back up. This is not a fault with the replacement battery. Charge the phone to 100%, allow it to drain fully to auto-shutdown without interruption, then charge back to 100%. After that single calibration cycle, percentage tracking stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405063585882,"sku":"BWCS-HUM615SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405063618650,"sku":"BWCS-HUM615SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405063651418,"sku":"BWCS-HUM615SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUM615SL-1.webp?v=1779369882","url":"https:\/\/batteryweb.com\/products\/metropcs-pinnacle-2-replacement-battery-37v-800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}