{"product_id":"huawei-p-smart-2021-replacement-battery-385v-4850mah-li-polymer","title":"Huawei P Smart 2021 Replacement Battery HB526488EEW 4850mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei P Smart 2021 \/ Enjoy 20 SE — 3.85V Li-Polymer Replacement Battery (HB526488EEW)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4850mAh (18.67Wh) Li-Polymer cell built to replace the original HB526488EEW battery in the Huawei P Smart 2021. It fits the PPA-LX2 and PPA-L22 variants as well as the Enjoy 20 SE. The cell matches the original 87.10 × 63.10 × 5.00mm footprint and connector orientation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eP Smart 2021 \/ Enjoy 20 SE platform:\u003c\/strong\u003e\n    Both devices share the Kirin 710A platform and the same battery bay geometry, connector pitch, and BMS handshake protocol — that is why one part number covers the full range of PPA-LX2, PPA-L22, and Enjoy 20 SE variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the cell on a PPA-LX2 unit. The BMS accepted the cell without fault codes, charge IC negotiated correctly to the expected constant-current phase, and the fuel gauge IC logged the first cycle without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge reset:\u003c\/strong\u003e\n    After installation, disable fast charging and run one full discharge down to automatic shutdown, then charge uninterrupted to 100%. This gives the coulomb counter a clean reference cycle against the new cell's actual discharge curve before fast-charge current is introduced.\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 P Smart 2021 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe P Smart 2021's fuel gauge IC stores a discharge curve calibrated to the old, degraded cell. When a fresh cell is installed, the IC underestimates remaining voltage and triggers shutdown early because the curve no longer matches actual cell behaviour. The phone's modem and display create brief high-current draw spikes that pull cell voltage below the IC's cutoff threshold before the real state of charge is exhausted. Running two complete discharge-charge cycles without fast charging corrects the stored curve. After recalibration, the reported percentage tracks the actual cell voltage accurately down to the 3.4V low-voltage threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not negotiating on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge cycle after installation, the BMS on a fresh cell may present an impedance profile that the charge IC reads as out of range, causing it to fall back to standard 5V charging rather than negotiating the higher-voltage fast-charge contract. This is not a fault — it resolves once the BMS has completed one full cycle and updated its internal resistance estimate. Let the first charge run at standard rate to 100% without interruption. After that cycle, reconnect the original charger and the fast-charge handshake should negotiate as normal.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391942918234,"sku":"BWCS-HUL220SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391942951002,"sku":"BWCS-HUL220SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391942983770,"sku":"BWCS-HUL220SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUL220SL-1.webp?v=1779142677","url":"https:\/\/batteryweb.com\/products\/huawei-p-smart-2021-replacement-battery-385v-4850mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}