{"product_id":"trimble-ts635-replacement-battery-37v-6400mah-li-ion","title":"Trimble TS635 Total Station Compatible Battery 3.7V 6400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTrimble TS635 \/ TS862 \/ TS662 Total Stations — 3.7V Li-ion Replacement Battery (890-0084)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 6400mAh Li-ion pack replaces the OEM battery in Trimble TS635, TS862, and TS662 total stations. It fits the standard battery bay on all three models and uses the same connector and BMS handshake profile as the original Trimble cell. Capacity listed is from product specification — 23.68Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTS635 \/ TS862 \/ TS662 shared battery platform:\u003c\/strong\u003e\n    These three total station models share the same 3.7V battery rail, bay geometry, and BMS communication protocol. One pack serves all three without any adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the TS635 instrument menu, including EDM initialisation and data logging under sustained servo load. The BMS held voltage within spec across the full discharge curve and did not trip during motor-drive current spikes at startup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-field calibration cycle:\u003c\/strong\u003e\n    After installing this pack, run a full calibration cycle through the instrument menu before field deployment. The TS635 maps battery state during that routine — skip it and the instrument will throw premature low-battery warnings on the first measurement session, even with a fully charged pack.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS lockout after the pack sat unused in a carry case for months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage. If a pack drops below approximately 2.5V per cell, the BMS trips a protection latch and blocks both charging and communication. The instrument will show no battery detected or refuse to power on, even when connected to a charger. To recover the pack, apply a low-current trickle charge directly to the battery terminals at around 0.1C until cell voltage climbs above 3.0V — most smart chargers handle this automatically with a \"recovery\" or \"pre-charge\" mode. Once the BMS re-initialises above that threshold, normal charging resumes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTS635 shutting down mid-measurement during USB data transfer to PC\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eUSB data transfer adds a draw on top of the active EDM and servo load. On a partially discharged pack, the combined current pull drops the cell voltage sharply enough to cross the BMS low-voltage cutoff threshold — the instrument shuts off instantly rather than giving a low-battery warning. This is not a fault with the pack; it is the BMS protecting the cells from over-discharge under a combined load spike. Charge the pack to at least 3.7V open-circuit before any transfer session, and avoid transferring data during an active measurement sequence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360734806106,"sku":"BWCS-TRM300XL-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360734838874,"sku":"BWCS-TRM300XL-2","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360734871642,"sku":"BWCS-TRM300XL-3","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TRM300XL-1.webp?v=1778616233","url":"https:\/\/batteryweb.com\/products\/trimble-ts635-replacement-battery-37v-6400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}