{"product_id":"sokkia-set-200-replacement-battery-74v-3400mah-li-ion","title":"Sokkia BDC46 SET 200 Replacement Battery 7.4V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSokkia SET 200 \/ SDL30 Total Station — 7.4V Li-ion Replacement Battery (BDC46)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 3400mAh Li-ion battery replaces the BDC46 and BDC46A packs used in the Sokkia SET 200 and SDL30 total stations. It fits the instrument's battery bay and connects to the onboard BMS via the same three-pin interface as the original. Voltage and capacity match the factory spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSET 200, SCT6, SDL30, and SDL50 compatibility:\u003c\/strong\u003e\n    These models share the same battery bay geometry, connector pinout, and BMS handshake protocol. One pack services all of them without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell under load cycles that simulate motor drive, angle measurement, and EDM ranging. The BMS held voltage within the instrument's operating window throughout and did not trip during the current spike at EDM initialisation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration step:\u003c\/strong\u003e\n    After installing this pack, run a full calibration cycle through the instrument menu before field deployment. The SET 200 maps battery state during calibration. Skipping this step causes premature low-battery warnings on your first measurement session even when the pack is full.\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 SET 200 sat unused in a carry case for months\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage. If a pack drops below roughly 2.5V per cell, the BMS trips a deep-discharge lockout and the instrument will not power on at all — not even briefly. The charger may also fail to initiate a charge cycle because the pack voltage is below the charger's detection threshold. To recover, place the battery on a compatible Li-ion charger that supports a pre-charge or recovery mode; some chargers will slowly trickle current at low voltage until the cells reach the standard charge threshold of around 3.0V per cell, at which point normal charging resumes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSET 200 shuts down mid-measurement with no low-battery warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage sag issue, not a capacity issue. Under sustained EDM ranging or continuous motor drive, current draw spikes and cell voltage temporarily drops below the instrument's cutoff threshold — even if the displayed battery indicator showed plenty of charge moments before. An aged cell has higher internal resistance, which amplifies the voltage sag under load. Check resting voltage after a shutdown: if it reads above 7.0V at rest but the instrument cuts out under load, internal resistance is the cause, and the cell needs replacement rather than recharging.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360734576730,"sku":"BWCS-SDC46XL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360734609498,"sku":"BWCS-SDC46XL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360734642266,"sku":"BWCS-SDC46XL-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SDC46XL-1.webp?v=1778616210","url":"https:\/\/batteryweb.com\/products\/sokkia-set-200-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}