{"product_id":"cricket-cricket-a410-replacement-battery-37v-1200mah-li-ion","title":"Cricket A410 Replacement Battery 3.7V 1200mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCricket A410 — 3.7V Li-ion Replacement Battery (A410)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion cell for the Cricket A410 smartphone. It also fits the Calcomp A410 and PCD Calcomp A410, which share the same battery bay and connector. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA410 platform compatibility:\u003c\/strong\u003e\n    The Cricket A410, Calcomp A410, and PCD Calcomp A410 all use the same physical footprint, connector pin-out, and BMS handshake protocol — the battery is interchangeable across these variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on an A410 unit. The BMS accepted the cell without error flags, the charge IC stepped through pre-charge, constant-current, and constant-voltage phases correctly, and the fuel gauge IC registered capacity without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installing this cell, disable fast charging and run one full discharge-charge cycle before normal use. The fuel gauge IC on the A410 calibrates its coulomb counter against the new cell's discharge curve during that first cycle. Skipping this step causes the percentage display to read inaccurately for the first several days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the A410 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe A410 uses a fuel gauge IC that tracks charge state by counting coulombs against a stored discharge curve. When you swap the cell, the IC still references the old cell's curve — which no longer matches the new cell's actual voltage-to-capacity relationship. Until the IC completes one full discharge and recharge cycle, the percentage reading drifts or stalls. No software fix corrects this — the recalibration only happens through a physical cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–25% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops faster than the fuel gauge IC predicts under high-current loads — specifically when the modem is transmitting or the screen is at full brightness. The cell voltage hits the BMS cutoff threshold before the displayed percentage reaches zero. The fix is to complete two full discharge-charge cycles so the fuel gauge IC maps the actual voltage cliff on this cell. After calibration, the shutdown point typically shifts back below 5%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405082099802,"sku":"BWCS-ZTC410SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405082132570,"sku":"BWCS-ZTC410SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405082165338,"sku":"BWCS-ZTC410SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTC410SL-1.webp?v=1779369934","url":"https:\/\/batteryweb.com\/products\/cricket-cricket-a410-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}