{"product_id":"toshiba-satellite-c800-replacement-battery-108v-6600mah-li-ion","title":"Toshiba Satellite C800 10.8V Replacement Battery PA5023U-1BRS","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eToshiba Satellite C800 Series — 10.8V Li-ion Replacement Battery (PA5023U-1BRS)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V Li-ion battery carries a 6600mAh (71.28Wh) capacity and replaces the original cells in the Toshiba Satellite C800, C800D, C805, C805D, and hundreds of related Satellite models. OEM part numbers covered include PA5023U-1BRS through PA5027U-1BRS, PABAS259–PABAS263, and PA5110U-1BRS. If your existing battery no longer holds charge or the laptop won't leave the power cable, this cell is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSatellite C800 series platform fit:\u003c\/strong\u003e\n    These models share a common 10.8V three-cell battery architecture with the same edge connector and BMS handshake protocol. One replacement cell covers the full C800\/C805 line because Toshiba used a single battery bay spec across this budget Satellite generation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and load cycles on Satellite C800-series hardware. The BMS negotiated correctly with the Toshiba EC, charge current stepped down at the expected 4.2V-per-cell ceiling, and the protection circuit tripped cleanly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install discharge cycle on Satellite C800:\u003c\/strong\u003e\n    After fitting this battery, run the laptop off mains until it hibernates on low-battery cutoff — then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell data and clears the inaccurate health warning that appears after every cell swap on this platform.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Satellite C800 BIOS reports poor battery health after a new cell install\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Satellite C800 EC reads health data from the battery's EEPROM on first contact. The new cell ships with factory EEPROM values that don't match the charge history the BIOS expects to see, so it flags the battery as degraded before a single cycle is complete. This is a firmware interpretation issue, not a fault with the replacement cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% writes fresh cycle data to the EEPROM and the health warning clears on the next boot.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% remaining on the Satellite C800\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't yet calibrated against the new cell's actual discharge curve. Under full CPU and display load, the voltage drops faster than the uncalibrated gauge predicts, and the EC triggers a protective shutdown before the displayed percentage reaches zero. It's not a faulty cell — it's the gauge running stale data from the old battery. Complete two to three full discharge-to-hibernate and charge-to-100% cycles to let the fuel gauge IC recalibrate, then confirm the laptop sustains load down to below 10% without a sudden cutoff.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410736644186,"sku":"BWCS-TOC855HB-1","price":113.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410736676954,"sku":"BWCS-TOC855HB-2","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410736709722,"sku":"BWCS-TOC855HB-3","price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TOC855HB-1.webp?v=1779580734","url":"https:\/\/batteryweb.com\/products\/toshiba-satellite-c800-replacement-battery-108v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}