{"product_id":"oppo-a30-replacement-battery-38v-2400mah-li-polymer","title":"Oppo A30 BLP607 Replacement Battery 3.8V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOppo A30 — 3.8V Li-Polymer Replacement Battery (BLP607)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BLP607 is a 3.8V, 2400mAh lithium-polymer cell that fits the Oppo A30 and A30 Dual SIM TD-LTE. It replaces a degraded or failed original cell and restores full electrical capacity to the device. Voltage and physical dimensions match the OEM spec: 79.80 × 61.94 × 3.27mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA30 and A30 Dual SIM TD-LTE fitment:\u003c\/strong\u003e\n    Both variants run the same battery bay geometry, 3.8V supply rail, and BMS handshake. One cell fits both. The flex connector and locking tab align to the same board position across the single and dual-SIM models.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the A30 platform. The BMS accepted the cell without fault codes, held the 4.35V cutoff correctly, and showed stable coulomb counter readings through the discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge inhibit:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. The fuel gauge IC is still calibrated to the old cell's discharge curve. Running a slow cycle first lets it map the new cell before high-current charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Oppo A30 reports the wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores a learned discharge curve from the old cell. When a new cell goes in, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The OS reads the IC's estimate, not the raw cell voltage, so the percentage shown can be off by 10–20%. One full discharge to auto-shutdown followed by a complete charge resets the coulomb counter and forces the IC to relearn the new cell's curve.\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 issue. Under peak load — modem transmitting, display at full brightness — the cell voltage drops sharply below the BMS cutoff threshold even though the reported percentage still looks safe. The fuel gauge IC hasn't recalibrated to the new cell's lower internal resistance profile yet. Run two full discharge-charge cycles without fast charging, then check that resting voltage at 30% reads at or above 3.7V before concluding the cell is at fault.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404133204058,"sku":"BWCS-OPA300SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404133236826,"sku":"BWCS-OPA300SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404133269594,"sku":"BWCS-OPA300SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OPA300SL-1.webp?v=1779369061","url":"https:\/\/batteryweb.com\/products\/oppo-a30-replacement-battery-38v-2400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}