{"product_id":"panasonic-g50-replacement-battery-37v-700mah-li-ion","title":"Panasonic EB-BSG50S G50 Replacement Battery 3.7V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic G50 \/ G51 — 3.7V Li-ion Replacement Battery (EB-BSG50S)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 700mAh Li-ion replacement cell for the Panasonic G50 and G51 smartphones. It matches the OEM part number EB-BSG50S and installs directly into either handset. Use this when the original cell no longer holds a charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG50 and G51 compatibility:\u003c\/strong\u003e\n    Both models run the same battery bay geometry, connector pinout, and BMS handshake protocol — one cell covers both. No adapter or modification needed.\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 G50 unit. The BMS accepted the cell without fault codes, and the charge IC reached full termination voltage correctly at 4.2V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting this cell, disable fast charging and run one full discharge-to-charge cycle before normal use. This lets the coulomb counter recalibrate its discharge curve against the new cell — without it, the OS percentage reading will lag or jump until the IC builds an accurate baseline.\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 G50 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a defective cell. The fuel gauge IC on the G50 was calibrated to the discharge curve of the original aged cell, which sagged more gradually. A fresh 700mAh cell holds a steeper voltage profile — the IC misreads remaining capacity and the modem or screen load pulls the cell voltage below the BMS cutoff threshold before the OS reaches 0%. One full discharge-to-charge cycle without fast charging resets the coulomb counter and eliminates the premature cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eG50 not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage. If a cell drops below approximately 2.5V, the BMS enters lockout mode and the phone will not respond to the power button or a normal charger. Connect the phone to a wall charger — not a PC USB port — and leave it for 15–20 minutes without pressing anything. The charge IC will trickle current into the cell at a safe rate until voltage clears the BMS recovery threshold, typically around 2.9–3.0V, after which normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409445617754,"sku":"BWCS-PAG50SL-1","price":23.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43409445650522,"sku":"BWCS-PAG50SL-2","price":26.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43409445683290,"sku":"BWCS-PAG50SL-3","price":28.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PAG50SL-1.webp?v=1779579708","url":"https:\/\/batteryweb.com\/products\/panasonic-g50-replacement-battery-37v-700mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}