{"product_id":"sprint-ppc-6800-replacement-battery-37v-1250mah-li-polymer","title":"Sprint PPC-6800 Replacement Battery 3.7V 1250mAh 35H00077-00M","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSprint PPC-6800 — 3.7V Li-Polymer Replacement Battery (35H00077-00M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1250mAh lithium-polymer cell for the Sprint PPC-6800 Windows Mobile smartphone. It replaces OEM part numbers 35H00077-00M, 35H00077-02M, and TRIN160. If your PPC-6800 won't hold a charge or shuts down unexpectedly, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePPC-6800 fit:\u003c\/strong\u003e\n    The PPC-6800 uses a thin 4.50mm Li-Polymer cell with a specific connector pinout tied to the device's charge IC. This battery matches that footprint and pin layout, so the charge circuit communicates correctly with the new cell.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full charge-discharge cycle on the PPC-6800 platform. The BMS accepted the charge handshake without fault, and the protection circuit engaged correctly at low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after install:\u003c\/strong\u003e\n    On first use, run the battery from 100% down to automatic shutdown, then charge uninterrupted to full. This gives the fuel gauge IC one complete reference cycle against the new cell's discharge curve before the OS starts reporting percentage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PPC-6800 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PPC-6800 uses a coulomb-counting fuel gauge IC that builds its capacity model against the original cell's discharge curve. When you install a new cell, that stored curve is stale. The IC keeps referencing the old data, so the percentage reading drifts — often reading 40% when the cell is nearly flat. One full discharge-to-shutdown, followed by an uninterrupted charge to 100%, forces the IC to rewrite its reference curve against the actual new cell.\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 failure, not a capacity problem. When the modem radio or display fires a current spike, a cell with any internal resistance drop will sag below the BMS cutoff threshold — even if the gauge still shows charge remaining. The shutdown happens because the instantaneous voltage falls, not because the cell is empty. Charge to 100%, run the calibration cycle once, then check open-circuit voltage at the next 20% reading — it should sit above 3.65V at rest.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405218676826,"sku":"BWCS-DD810SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405218709594,"sku":"BWCS-DD810SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405218742362,"sku":"BWCS-DD810SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DD810SL-1.webp?v=1779370349","url":"https:\/\/batteryweb.com\/products\/sprint-ppc-6800-replacement-battery-37v-1250mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}