{"product_id":"spetrotec-4642-e434-v12-segn-replacement-battery-37v-1100mah-li-polymer","title":"Spetrotec 4642-E434-V12 Compatible Battery 3.7V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSpetrotec 4642-E434-V12 SEG\/N — 3.7V Li-Polymer Replacement Battery (AE6036501S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1100mAh lithium-polymer cell replaces part number AE6036501S1P in the Spetrotec 4642-E434-V12 SEG\/N portable GPS navigator. It restores power to the navigation unit when the original cell no longer holds a usable charge. Dimensions are 52.00 × 33.80 × 6.00mm — confirm these against your existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e4642-E434-V12 SEG\/N fitment:\u003c\/strong\u003e\n    This cell matches the voltage rail and physical footprint of the original AE6036501S1P. The connector orientation and BMS logic align with what the navigator's charge management circuit expects — no modification needed to fit the battery tray.\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 under the navigator's load profile. The BMS held cutoff at the correct low-voltage threshold and accepted a full charge without triggering protection mode at any point in testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use satellite acquisition:\u003c\/strong\u003e\n    After fitting this cell, power the unit on outdoors before your first trip. The GPS performs a cold start after any full power interruption — first satellite fix takes 5–10 minutes. Subsequent warm starts lock in under a minute once the almanac 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 dropping at low battery on the 4642-E434-V12 SEG\/N\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome GPS navigators reduce receiver sensitivity when battery voltage falls below a set threshold — the unit prioritises keeping the display and processor running. On the 4642-E434-V12 SEG\/N, this can appear as position drift or slower route recalculation before any low-battery indicator appears. A degraded original cell hits this voltage floor much earlier in a session than a fresh cell will. Replacing the cell restores full receiver power across the entire charge cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNavigator shuts off without warning before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the battery indicator is calibrated against the original cell's discharge curve — an aged or different-capacity cell drops voltage more steeply under load than the calibration expects. The unit's voltage-threshold cutoff trips before the visual gauge reaches the low-battery icon. After fitting this replacement, run two full charge-to-cutoff cycles to allow the navigator to re-align its gauge to the new cell's discharge curve. If the issue persists, check that the unit is running the latest firmware, as some revisions include updated battery calibration tables.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377635000410,"sku":"BWCS-SPT642SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377635033178,"sku":"BWCS-SPT642SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377635065946,"sku":"BWCS-SPT642SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SPT642SL-1.webp?v=1778771783","url":"https:\/\/batteryweb.com\/products\/spetrotec-4642-e434-v12-segn-replacement-battery-37v-1100mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}