{"product_id":"legrand-806525-replacement-battery-24v-800mah-ni-cd","title":"Legrand 806525 Emergency Lighting Compatible Battery 2.4V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLegrand 806525 \/ ST1 F200 BAES — 2.4V Ni-CD Replacement Battery (MXN0067, MXN0082)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V 800mAh Ni-CD replacement battery for Legrand emergency lighting units, specifically the 806525, ST1 F200, and BAES 806525 fittings. It slots into the fitting's battery compartment and connects to the on-board charge controller that keeps the cell in float between mains-power events. Voltage and cell geometry match the OEM specification for these units.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e806525, ST1 F200, and BAES 806525 compatibility:\u003c\/strong\u003e\n    These three Legrand fittings share the same 2.4V charge rail, the same physical cell footprint (50.20 × 28.20 × 14.10mm), and the same two-wire connector orientation — so a single cell covers all three without any modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We connected this cell to a Legrand 806525 charge controller and monitored BMS float acceptance. The controller registered charge current within two minutes of connection and transitioned to float at the expected voltage window without fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst test cycle after installation:\u003c\/strong\u003e\n    Within 24 hours of fitting, hold the test button for the full rated duration. Ni-CD cells that have been in storage need one complete load cycle before the charge controller can accurately register cell capacity — skipping this step can cause a false fail on your next compliance inspection.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEmergency light failing its duration test after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Ni-CD cell does not arrive at full capacity — storage self-discharge leaves it partially depleted. The charge controller in the 806525 fitting applies a trickle charge, but it takes up to 24 hours to bring a new cell to its rated 800mAh from a storage state. If a compliance duration test runs before that charge cycle completes, the light will cut out early and log a fail against a battery that is otherwise functional. Run a full manual test cycle after the first 24-hour charge period to confirm the cell holds load before any scheduled inspection.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator staying red after new battery installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe charge controller on these Legrand fittings reads cell voltage before accepting it into the float window. A cell that has dropped below approximately 1.8V during long storage sits outside the float acceptance threshold, so the controller continues showing a fault or red LED rather than transitioning to green. The fix is to leave the fitting powered on the mains for a full 24-hour conditioning period — the controller applies a recovery charge that brings cell voltage back into the 2.4V nominal range. After that period, the indicator should shift to green; if it does not, check that the connector is fully seated and measure cell voltage directly — it should read at or above 2.2V under no load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360418398298,"sku":"BWCS-OVA120LS-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360418431066,"sku":"BWCS-OVA120LS-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360418463834,"sku":"BWCS-OVA120LS-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OVA120LS-1.webp?v=1778614613","url":"https:\/\/batteryweb.com\/products\/legrand-806525-replacement-battery-24v-800mah-ni-cd","provider":"BatteryWeb","version":"1.0","type":"link"}