{"product_id":"aeriled-290071-replacement-battery-48v-1500mah-ni-mh","title":"Aeriled 290071 Replacement Battery 4.8V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAeriled 290071 \/ 290073 \/ 290161 — 4.8V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V 1500mAh Ni-MH replacement battery for Aeriled portable LED work lights and flashlights, including models 290071, 290073, 290161, and 138073. It slots into the same battery bay as the original cell. Capacity is 1500mAh (7.2Wh), matching the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModel group fit — 290071, 290073, 290161, 138073:\u003c\/strong\u003e\n    These four models share the same 4.8V battery bay and LED driver board. The connector type, cell count, and voltage rail are consistent across the group, so one battery covers all four.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through full charge and discharge on the 290071 platform. The BMS accepted charge without fault, and the LED driver pulled consistent current through the discharge curve without premature cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle brightness calibration:\u003c\/strong\u003e\n    Run the light on medium brightness for the first full cycle on this new battery. The LED driver calibrates its current output against the new cell's voltage curve at moderate draw before you push it to maximum brightness.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLED work light dimming before the battery indicator shows low\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn this platform, the LED driver begins reducing current to the emitter before the BMS reaches its low-voltage cutoff threshold. The driver does this to protect the emitter from undervoltage flicker — it is not a fault. The battery still has charge remaining when dimming starts. If dimming begins earlier than expected, the cell voltage is sagging under load, which happens faster as Ni-MH cells age. A fully charged, fresh cell holds above 4.6V under load through most of the discharge cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLight not reaching full brightness after fitting a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells ship at partial charge — typically 40–60% of capacity — due to self-discharge during storage and transit. If full brightness is not reached immediately, the cell voltage is below the LED driver's minimum input threshold for maximum current output. Charge the battery completely before the first use. A full charge brings the pack to 5.8–6.0V at rest across four Ni-MH cells, which puts the driver well inside its full-brightness operating range.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381321039962,"sku":"BWCS-KLE734SL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381321072730,"sku":"BWCS-KLE734SL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381321105498,"sku":"BWCS-KLE734SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KLE734SL_1.webp?v=1778899964","url":"https:\/\/batteryweb.com\/products\/aeriled-290071-replacement-battery-48v-1500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}