{"product_id":"htc-magic-replacement-battery-37v-2680mah-li-ion","title":"HTC Magic 35H00119-00M Replacement Battery 3.7V 2680mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHTC Magic \/ A6161 Sapphire — 3.7V Li-ion Replacement Battery (35H00119-00M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V Li-ion cell replaces the original battery in the HTC Magic, A6161, and Sapphire series Android smartphones. Capacity is 2680mAh (9.92Wh), which exceeds the stock cell rating. OEM part numbers covered include 35H00119-00M, BA S350, and SAPP160.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMagic \/ Sapphire platform fit:\u003c\/strong\u003e\n    The Magic (A6161) and Sapphire 100 share the same battery bay geometry, connector pinout, and BMS communication protocol — one cell revision covers all variants in this lineup 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 the Magic's charge IC on the bench. The BMS handshake completed on first connection, charge current stepped correctly through CC and CV phases, and the protection circuit tripped at the expected undervoltage threshold without latching.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge down to auto-shutdown, then charge uninterrupted to 100% before using the phone normally. The HTC Magic's fuel gauge IC carries calibration data from the old cell — skipping this cycle causes erratic percentage readings from day one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the HTC Magic shuts down suddenly at 20–30% after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Magic's fuel gauge IC stores a discharge curve built against the previous cell's internal resistance profile. A new cell has a different voltage-versus-capacity slope, so the gauge miscalculates remaining capacity. When the modem fires a data burst or the screen peaks brightness, the cell voltage drops sharply — the protection circuit reads this as a cutoff condition and kills the phone. One complete discharge-charge cycle rewrites the internal model. After that cycle, the gauge tracks the new cell accurately and the premature shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage. If the cell voltage has dropped below 2.5V per cell, the BMS enters a lockout state and blocks normal charge current to prevent thermal runaway. The phone will show nothing — no boot screen, no charge indicator. Connect the phone to a wall charger rated at least 5V\/1A and leave it untouched for 20–30 minutes. Most BMS circuits accept a trickle recovery current at this stage and will re-enable the main charge path once the cell climbs back above 2.8V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405135839322,"sku":"BWCS-HDE180XL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405135872090,"sku":"BWCS-HDE180XL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405135904858,"sku":"BWCS-HDE180XL-3","price":32.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/batteryweb.com\/products\/htc-magic-replacement-battery-37v-2680mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}