{"product_id":"qstarz-bt-1000x-replacement-battery-37v-1000mah-li-ion","title":"Qstarz BT-1000X GPS Compatible Battery 3.7V 1000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eQstarz BT-1000X \/ BT-Q810 \/ BT-Q818X — 3.7V Li-ion Replacement Battery (HXE-W01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh Li-ion cell built to the HXE-W01 specification. It fits the Qstarz BT-1000X, BT-Q810, and BT-Q818X GPS data loggers. At 52.96 × 33.64 × 5.15mm, it slots directly into the same battery bay as the original.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBT-1000X, BT-Q810, and BT-Q818X compatibility:\u003c\/strong\u003e\n    All three units share the same HXE-W01 footprint, connector pinout, and 3.7V charging circuit — the BMS handshake is identical across the range, so one cell covers all three.\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 discharge cycles on a BT-1000X unit. The BMS accepted the charge curve without tripping, voltage hold across the discharge was consistent, and cutoff triggered cleanly at the low-voltage threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCold-start satellite acquisition after fitting:\u003c\/strong\u003e\n    After fitting this cell and powering on, take the unit outdoors and leave it running. The GPS performs a full cold start after any complete power interruption — first satellite fix typically takes 5–10 minutes. Subsequent warm starts drop to under a minute once ephemeris data is cached.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGPS accuracy reduced at low battery on the BT-1000X\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAs cell voltage drops toward the cutoff threshold, some GPS receiver circuits reduce RF sensitivity to lower current draw. On the BT-1000X, this shows up as wider position scatter or track points jumping several metres off the actual path. The fix is straightforward — charge the unit before any logging session where accuracy matters. If you see position error increase mid-track, check the battery indicator; it likely reflects a cell that has lost capacity and is hitting the low-voltage range sooner than expected.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBT-1000X shuts off without low-battery warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge on these loggers reads cell voltage, not actual state of charge. A degraded original cell can show a mid-level indicator right up until voltage collapses and the unit cuts off. A fresh 1000mAh cell restores the full voltage curve the gauge was calibrated against. After fitting, run one full charge and discharge cycle — this lets the voltage-to-capacity mapping realign so the warning threshold triggers correctly before cutoff.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377710104666,"sku":"BWCS-XEW01SL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377710137434,"sku":"BWCS-XEW01SL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377710170202,"sku":"BWCS-XEW01SL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-XEW01SL-1.webp?v=1778771896","url":"https:\/\/batteryweb.com\/products\/qstarz-bt-1000x-replacement-battery-37v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}