{"product_id":"streamlight-sl-20x-replacement-battery-6v-5000mah-ni-mh","title":"Streamlight SL-20X 6V Replacement Battery 5000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eStreamlight SL-20X Series — 6V Ni-MH Replacement Battery (20170)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 6V 5000mAh Ni-MH battery pack replaces the original rechargeable cell in the Streamlight SL-20X, SL-20, and SL-20S flashlights. It fits the high-intensity xenon lamp models used by law enforcement, search and rescue, and industrial crews. Voltage and capacity match the OEM spec exactly — 6V, 5000mAh, 30Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSL-20X platform fit:\u003c\/strong\u003e\n    The SL-20X, SL-20, and SL-20S all share the same cylindrical battery housing, 6V nominal voltage rail, and spring-contact terminals — so one pack covers the full family without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through full charge and discharge cycles on the SL-20X. The Ni-MH cells held voltage at the xenon lamp's draw without triggering early cutoff, and the pack reached rated capacity within two conditioning cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMulti-cell pack handling:\u003c\/strong\u003e\n    This pack contains matched cells from the same production batch. If you are replacing only one battery in a two-flashlight setup, do not mix this pack with a partially depleted original — mismatched cell ages under high xenon draw will cause the weaker pack to drop voltage first and degrade faster.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SL-20X dims before the low-battery indicator triggers\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SL-20X drives a xenon bulb directly from the battery pack with no active regulation stage. As cell voltage drops under load, the lamp draws less current and output falls visibly — before the battery reaches its rated cutoff voltage. This is a characteristic of direct-drive xenon circuits, not a fault with the pack. A freshly charged 6V Ni-MH pack at full capacity will hold the lamp at full brightness significantly longer than a degraded cell operating at the same nominal voltage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery cycling rapidly through modes near end of charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the SL-20X appears to flicker or the driver steps output up and down near the end of a discharge, the pack voltage is dipping below the threshold needed to sustain the xenon load. The lamp's current draw momentarily pulls voltage down, the light dims, current demand drops, voltage recovers, and the cycle repeats. Switch to a lower output mode immediately — this stops the cycling and lets the remaining charge discharge cleanly. Recharge when resting pack voltage falls to 5.4V or below.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377526767706,"sku":"BWCS-SLX200FT-1","price":80.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377526800474,"sku":"BWCS-SLX200FT-2","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377526833242,"sku":"BWCS-SLX200FT-3","price":103.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SLX200FT-1.webp?v=1778767222","url":"https:\/\/batteryweb.com\/products\/streamlight-sl-20x-replacement-battery-6v-5000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}