{"product_id":"samsung-sgh-t699-replacement-battery-37v-1800mah-li-ion","title":"Samsung Galaxy S Relay 4G EB-L1K6ILA Replacement Battery 3.7V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung SGH-T699 \/ Galaxy S Relay 4G — 3.7V Li-ion Replacement Battery (EB-L1K6ILA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1800mAh Li-ion cell replaces the original EB-L1K6ILA in the Samsung SGH-T699 (Galaxy S Relay 4G). It also fits the Galaxy S Blaze Q and SCH-i415. Dimensions are 69.80 × 51.90 × 4.20mm — same footprint as the factory cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSGH-T699 \/ Relay 4G \/ Blaze Q platform fit:\u003c\/strong\u003e\n    These models share the same battery bay geometry, connector pinout, and BMS handshake protocol. One cell covers the full group without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a Relay 4G unit. The BMS accepted the charge profile on the first cycle, and the protection circuit tripped correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first installation, disable fast charging and run one full discharge-to-charge cycle before normal use. The fuel gauge IC on the Relay 4G calibrates its coulomb counter against the cell's discharge curve — skipping this step causes the percentage readout to drift against the new cell's actual capacity.\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 Relay 4G after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SGH-T699 shuts down abruptly at 20–30% when the modem fires a high-current burst — LTE radio and the screen backlight pulling load simultaneously can spike demand beyond what a new, uncalibrated cell can hold up under. This is a voltage cliff event: the cell's terminal voltage drops below the system's cutoff threshold faster than the fuel gauge predicts. The gauge IC is still reading the old cell's discharge curve and calling 25% when the new cell is actually near depletion under load. One full discharge-to-charge cycle recalibrates the coulomb counter and resolves this.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage, and if the replacement cell dropped below 2.5V per cell, the BMS latches into lockout to prevent damage. The phone will show nothing — no charging animation, no boot screen. Connect the phone to a wall charger (not a USB port) and leave it for 15–20 minutes without pressing power. The charge IC on the Relay 4G can trickle current into a locked-out cell and release the BMS latch once voltage climbs back above 2.7V, after which the phone will begin a normal charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404338397274,"sku":"BWCS-SMT699XL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404338430042,"sku":"BWCS-SMT699XL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404338462810,"sku":"BWCS-SMT699XL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMT699XL-1.webp?v=1779369779","url":"https:\/\/batteryweb.com\/products\/samsung-sgh-t699-replacement-battery-37v-1800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}