{"product_id":"sanyo-m1-replacement-battery-37v-850mah-li-ion","title":"Sanyo M1 Replacement Battery 3.7V 850mAh SCP-24LBPL","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSanyo M1 — 3.7V Li-ion Replacement Battery (SCP-24LBPL)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 850mAh Li-ion replacement battery for the Sanyo M1 smartphone. It fits the M1 and M-1 model variants and matches the OEM part number SCP-24LBPL. Total energy capacity is 3.15Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM1 and M-1 compatibility:\u003c\/strong\u003e\n    Both model designations use the same battery connector, voltage rail, and BMS handshake — the SCP-24LBPL cell communicates with the phone's charge IC over the same three-contact interface in both variants.\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 M1 platform and confirmed the BMS accepted full charge termination without error flags. Charge IC communication held stable across multiple cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.\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 Sanyo M1 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a defective cell. The M1's fuel gauge IC was calibrated to the discharge curve of the original cell. A new cell has a slightly different voltage-to-capacity curve, so the gauge misjudges the remaining charge. Under modem or screen load, voltage drops below the phone's cutoff threshold before the gauge reaches 0%. One full discharge-to-shutdown followed by an uninterrupted full charge resets the coulomb counter and corrects this behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone reports incorrect battery percentage after the SCP-24LBPL is installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the M1 stores a learned discharge profile from the old cell — it does not auto-reset when the cell is swapped. Until the IC re-learns the new cell, percentage readings will be off, often reading higher than actual charge. Run the phone down to automatic shutdown, then charge in one continuous session to 100%. After that single calibration cycle, percentage reporting should track correctly against the new cell's actual charge state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405155106906,"sku":"BWCS-SYM1SL-1","price":22.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43405155139674,"sku":"BWCS-SYM1SL-2","price":25.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43405155172442,"sku":"BWCS-SYM1SL-3","price":27.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SYM1SL-big.webp?v=1779370298","url":"https:\/\/batteryweb.com\/products\/sanyo-m1-replacement-battery-37v-850mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}