{"product_id":"htc-evo-shift-4g-replacement-battery-37v-1200mah-li-ion","title":"HTC EVO Shift 4G 35H00146-00M Compatible Battery 3.7V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHTC EVO Shift 4G \/ Knight \/ Speedy — 3.7V Li-ion Replacement Battery (35H00146-00M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 1200mAh Li-ion replacement battery for the HTC EVO Shift 4G, Knight, Speedy, and PG06100. It uses OEM part number 35H00146-00M and fits directly into the standard battery bay on all four models. Voltage and capacity match the original spec from HTC.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEVO Shift 4G, Knight, Speedy, and PG06100 compatibility:\u003c\/strong\u003e\n    All four devices share the same battery footprint, connector pinout, and 3.7V charge cutoff. The BMS on each model reads the same thermistor and protection circuit, so one cell covers all variants 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 a full charge cycle on the EVO Shift 4G and monitored the BMS handshake at each charge stage. Protection circuits triggered correctly at both the high-voltage cutoff and the low-voltage floor — no false trips during the modem radio load spikes we induced.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After installing this cell, let the phone drain to auto-shutdown before charging back to 100% on a standard 5V charger — not a fast charger. The fuel gauge IC on the EVO Shift 4G was calibrated to the old cell's discharge curve. One full cycle resets the coulomb counter against the new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the EVO Shift 4G shuts down suddenly at 20–30% after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe EVO Shift 4G's fuel gauge IC holds a discharge curve from the previous cell in non-volatile memory. When a new cell goes in, the stored curve no longer matches actual cell voltage under load. At 20–30% reported charge, the new cell's actual terminal voltage drops below what the modem radio and screen need — typically under 3.5V under combined load — and the phone cuts power before the gauge shows zero. This is not a faulty battery. One full discharge-charge cycle rewrites the coulomb counter and the 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 this battery shipped at a low state of charge and sat for weeks before installation, the cell voltage may have dropped below 2.5V — the threshold where the BMS locks out to prevent damage. The phone will show no response when the power button is pressed. Connect the phone to a wall charger and leave it untouched for 20–30 minutes before attempting to power on. Once the BMS detects voltage above 2.8V, it re-initialises the charge path and the phone will begin a normal boot.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405095698522,"sku":"BWCS-HT6100SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405095731290,"sku":"BWCS-HT6100SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405095764058,"sku":"BWCS-HT6100SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HT6100SL-1.webp?v=1779369956","url":"https:\/\/batteryweb.com\/products\/htc-evo-shift-4g-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}