{"product_id":"tcl-tcl-p588-replacement-battery-38v-2000mah-li-polymer","title":"TCL P588 Replacement Battery TLp020M7 3.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTCL P588 \/ P588L — 3.8V Li-Polymer Replacement Battery (TLp020M7)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2000mAh (7.6Wh) Li-Polymer cell for the TCL P588 and P588L smartphones. It matches the OEM part number TLp020M7 and fits the original battery bay without modification. Capacity figure comes from the product data — 2000mAh at 3.8V nominal.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eP588 and P588L shared cell:\u003c\/strong\u003e\n    Both variants run the same voltage rail and use the same connector pinout and BMS handshake, so one cell covers both. The P588L is a regional variant with identical internal battery architecture — no electrical difference at the cell level.\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 P588 platform and logged BMS communication. The protection circuit responded correctly to end-of-charge at 4.2V and engaged undervoltage cutoff at the expected threshold without fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-charge cycle at standard rate. This lets the fuel gauge IC map its coulomb counter against the new cell's discharge curve before any high-current charging session pushes current into an uncalibrated reference point.\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 P588 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC still holds the discharge curve from the old, degraded cell. When the new cell hits a voltage point the IC associates with a near-empty state, it signals the OS to shut down — even though usable charge remains. The modem and screen pull current spikes that accelerate the voltage drop past the IC's cutoff threshold. One full discharge cycle, draining to automatic shutdown and then charging uninterrupted to 100%, resets the coulomb counter to match the new cell and corrects the reported percentage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB charging not initiating on the P588 after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the replacement cell has been sitting in storage and dropped below approximately 3.0V, the BMS enters lockout mode and blocks charge current from the USB port. The phone will not respond to a cable and may show no charge indicator at all. Connect the device to a low-current USB source — a standard 5V\/500mA port, not a fast charger — and leave it for 20–30 minutes without pressing the power button. This allows the charge IC to trickle current past the BMS lockout threshold before the device attempts a full boot sequence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392108953690,"sku":"BWCS-TCP588SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392108986458,"sku":"BWCS-TCP588SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392109019226,"sku":"BWCS-TCP588SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TCP588SL-1.webp?v=1779143816","url":"https:\/\/batteryweb.com\/products\/tcl-tcl-p588-replacement-battery-38v-2000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}