{"product_id":"asus-zenfone-ar-replacement-battery-385v-3100mah-li-polymer","title":"C11P1608 Asus ZenFone AR Compatible Battery 3.85V 3100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus ZenFone AR (ZS571KL \/ A002A) — 3.85V Li-Polymer Replacement Battery (C11P1608)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3100mAh Li-Polymer replacement battery for the Asus ZenFone AR. It fits the ZS571KL, A002A, and V570KL variants — all share the same battery bay geometry and BMS handshake protocol. The C11P1608 cell slot drops directly into the standard ZenFone AR battery compartment with no modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZS571KL \/ A002A \/ V570KL compatibility:\u003c\/strong\u003e\n    These three model numbers share an identical battery bay, flex connector pinout, and BMS communication line. The C11P1608 part number covers all three — Asus used the same cell spec across regional variants of this device.\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 ZS571KL hardware. The BMS accepted the cell without triggering a fault code, and the protection circuit cut in correctly at the low-voltage threshold — no thermal event, no charging loop.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    After installation, disable fast charging and run one full discharge down to automatic shutdown, then charge uninterrupted to 100%. The ZenFone AR's fuel gauge IC calibrates its coulomb counter against the cell's discharge curve on that first full cycle — skipping this step causes erratic percentage readings.\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 ZenFone AR after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ZenFone AR runs a Snapdragon 821 paired with a Tango depth-sensing camera array — under combined load, current draw spikes sharply. A new cell with an uncalibrated fuel gauge IC can report 25% remaining while actual cell voltage has already dropped below the 3.4V threshold the BMS uses to trigger shutdown. This is a voltage cliff, not a defective cell. One full uninterrupted discharge-charge cycle lets the coulomb counter establish an accurate state-of-charge baseline against the new cell's actual capacity curve. After that cycle, the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB charging not starting after deep discharge in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells stored below 2.5V per cell trigger a BMS lockout — the protection circuit opens and blocks charge current to prevent damage to the degraded cell. A standard charger will show no charging indicator and the phone will not power on. To recover, apply a low-current trickle source — a USB port capped at 500mA — for 20 to 30 minutes before attempting a normal charge cycle. Once cell voltage climbs above 2.8V, the BMS closes the circuit and normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391875448922,"sku":"BWCS-AUV570SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391875481690,"sku":"BWCS-AUV570SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391875514458,"sku":"BWCS-AUV570SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUV570SL-1.webp?v=1779142412","url":"https:\/\/batteryweb.com\/products\/asus-zenfone-ar-replacement-battery-385v-3100mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}