{"product_id":"nightstick-9700-replacement-battery-37v-10200mah-li-ion","title":"Nightstick 9700-BATT Replacement Battery 3.7V 10200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNightstick 9700 \/ 9744 \/ 9746 — 3.7V Li-ion Replacement Battery (9700-BATT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 10200mAh Li-ion replacement battery for the Nightstick 9700, 9744, and 9746 flashlights. It replaces OEM part 9700-BATT and slots into the same battery compartment as the original. Capacity is sourced from product data at 10200mAh (37.74Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e9700 \/ 9744 \/ 9746 platform compatibility:\u003c\/strong\u003e\n    These three flashlight models share the same cylindrical battery format, voltage rail, and driver circuit expectations. The 9700-BATT form factor — 203.50 x 24.00 x 24.00mm — fits all three without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge, discharge, and turbo-mode draw cycles on the 9700 platform. The BMS held voltage within spec under sustained high-current output and tripped cleanly at low-voltage cutoff without driver oscillation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eTurbo-mode thermal behaviour:\u003c\/strong\u003e\n    The Nightstick 9700 driver can push high sustained current in turbo mode. Keep the flashlight head clear of enclosed spaces during extended turbo use — heat buildup in the head affects the driver's thermal regulation step-down point, not just comfort.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 9700 steps down output before the battery indicator reads low\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 9700's driver uses brownout protection that monitors cell voltage in real time, not just the charge indicator. When the cell drops below the driver's threshold voltage under load — especially during turbo draw — the driver steps output down to protect the cell before the indicator catches up. This is normal behaviour, not a fault with the battery. If you see premature dimming, switch to a lower mode to keep voltage above the driver's cutoff threshold and the light will hold steady output longer.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFlashlight not powering on after the battery fully discharged\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the 9700 was stored with the battery depleted, the cell may have dropped below the BMS's minimum recovery threshold — typically around 2.5V for Li-ion. At that point, the BMS locks out discharge and the flashlight shows no response. Connect the battery to a charger that supports low-voltage recovery or trickle pre-charge mode; most quality Li-ion chargers will bring the cell back above 3.0V and re-enable the BMS. If the charger shows no recognition of the cell after 30 minutes, the cell has self-discharged past recovery and needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377494622298,"sku":"BWCS-NXB970FX-1","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377494655066,"sku":"BWCS-NXB970FX-2","price":55.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377494687834,"sku":"BWCS-NXB970FX-3","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NXB970FX-1.webp?v=1778767154","url":"https:\/\/batteryweb.com\/products\/nightstick-9700-replacement-battery-37v-10200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}