{"product_id":"samsung-sch-r830-replacement-battery-38v-2100mah-li-ion","title":"EB-L1H7LLA Samsung SCH-R830 Replacement Battery 3.8V 2100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung SCH-R830 \/ Galaxy Axiom — 3.8V Li-ion Replacement Battery (EB-L1H7LLA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2100mAh Li-ion cell for the Samsung SCH-R830 and Galaxy Axiom (SPH-L300) flip phones. It replaces OEM part EB-L1H7LLA and EB-L1H7LLABXAR. Voltage and capacity match the original spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSCH-R830 and SPH-L300 compatibility:\u003c\/strong\u003e\n    Both the SCH-R830 and SPH-L300 share the same 3.8V battery bay, connector pinout, and BMS handshake requirements — that is why one cell covers both models. The charge IC on each device reads the same thermistor line and pack ID resistance from this battery.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on an SCH-R830 and confirmed the BMS completed a full charge cycle without triggering a high-voltage cutoff. Charge acceptance was stable from 3.0V to the 4.35V upper limit. No error flags appeared in the charge log.\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 for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell. Skip this step and the percentage readout will drift for weeks.\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 SCH-R830 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SCH-R830's modem and display draw a combined current spike that forces the cell voltage below the BMS cutoff threshold — even when the gauge still reads 20–30%. A new cell has a steeper voltage cliff at low charge states than the old, degraded cell the fuel gauge IC was calibrated to. The phone cuts power because real voltage has dropped below 3.2V under load while the gauge still shows capacity remaining. One full discharge-charge cycle resets the coulomb counter and aligns the gauge to the new cell curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOS reporting wrong battery percentage after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores a learned discharge model from the previous cell. When a new cell goes in, the stored model no longer matches the actual voltage-to-capacity curve of the replacement. The percentage jumps erratically or stalls at a fixed value because the coulomb counter is reading against the wrong baseline. Drain the phone to auto-shutdown, then charge uninterrupted to 100% — one full cycle forces the IC to re-learn the new cell's curve and stabilise the readout.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404324339802,"sku":"BWCS-SML300XL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404324372570,"sku":"BWCS-SML300XL-2","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404324405338,"sku":"BWCS-SML300XL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SML300XL-1.webp?v=1779369779","url":"https:\/\/batteryweb.com\/products\/samsung-sch-r830-replacement-battery-38v-2100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}