{"product_id":"razer-blade-15-2018-512gb-144hz-replacement-battery-154v-5200mah-li-polymer","title":"Razer RC30-0248 Blade 15 2018 Replacement Battery 15.4V 80Wh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRazer Blade 15 2018 512GB 144Hz — 15.4V Li-Polymer Replacement Battery (RC30-0248)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 15.4V 5200mAh (80.08Wh) Li-Polymer replacement battery for the Razer Blade 15 2018 512GB 144Hz and related Blade 15 models including the Advanced, RTX 2070 Max-Q, and RZ09-02385W71-R3W1. OEM part number RC30-0248 also appears as 4ICP4\/55\/162 and 4ICP4\/56\/162 on the cell label. It restores full battery functionality when the original pack has degraded, swells, or no longer holds a usable charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBlade 15 platform compatibility:\u003c\/strong\u003e\n    These Blade 15 variants share the same 15.4V four-cell Li-Polymer configuration, identical connector pinout, and BMS communication protocol — which is why a single RC30-0248 part number spans the 2018 base, Advanced, and RTX 2070 Max-Q boards without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Blade 15 board and confirmed BMS handshake, charge acceptance through all four CCCV stages, and correct voltage reporting under GPU-plus-display load. The BMS did not flag an incompatible cell or trigger a protection cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap calibration on Blade 15:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on Blade 15 firmware.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBlade 15 shutting down at 20–30% remaining after battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC on the Blade 15 board is still reading voltage curves from the old, degraded cell. The new cell has a steeper, healthier discharge curve — the firmware misreads this as a voltage cliff and triggers an emergency shutdown before the cell is actually depleted. It is not a fault with the replacement battery. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100%, and the fuel gauge recalibrates against the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWindows reporting the new battery as 0% or \"Consider replacing your battery\" on first boot\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe EEPROM on the original Razer pack stores cycle count and health data that Windows reads at POST. A new cell resets that data, which the OS and Razer Synapse both flag as an unknown or degraded battery on the first boot. This is a firmware reporting artefact, not a battery failure. Boot into the BIOS battery settings, let the learn cycle complete, then allow Windows to run one full charge cycle — the health status clears to normal by the second charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409666146394,"sku":"BWCS-RZB150NB-1","price":83.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409666179162,"sku":"BWCS-RZB150NB-2","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409666211930,"sku":"BWCS-RZB150NB-3","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RZB150NB-1.webp?v=1779580358","url":"https:\/\/batteryweb.com\/products\/razer-blade-15-2018-512gb-144hz-replacement-battery-154v-5200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}