{"product_id":"ovaled-290152-replacement-battery-48v-1500mah-ni-mh","title":"Ovaled 290152 LED Light Replacement Battery 4.8V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOvaled 290152 \/ 290153 \/ 290170 \/ 290171 Series — 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 Ovaled LED light devices including the 290152, 290153, 290170, and 290171 models. It restores power to rechargeable LED lighting fixtures that have lost capacity or stopped holding a charge. Voltage and cell chemistry match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e290152–290171 series compatibility:\u003c\/strong\u003e\n    These Ovaled models share the same 4.8V four-cell Ni-MH configuration and connector arrangement. The LED driver circuit in each unit draws from the same voltage rail, so one cell pack covers the full range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on a calibrated load. The BMS held the 4.8V nominal line cleanly across the discharge curve, with cutoff triggering before cell voltage dropped into reversal territory.\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. This gives the LED driver time to calibrate current output against the new cell before you push it to maximum draw — full brightness on an unconditioned pack can cause the driver to read a false low-voltage condition.\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 low-battery indicator triggers\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a normal function of the LED driver, not a fault in the battery. At moderate discharge depth, the driver begins reducing current to the LEDs before the BMS reaches its hard cutoff threshold — typically around 4.0V on a 4.8V Ni-MH pack. The dimming acts as a soft warning ahead of the hard shutoff. If dimming happens much earlier than expected, the pack likely needs a full conditioning cycle to reach rated capacity.\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\"\u003eA new Ni-MH pack fresh from storage often sits below the minimum input voltage the LED driver needs for full-brightness operation. The driver throttles output until it sees sufficient voltage headroom above the 4.8V nominal line. Fit the battery, charge the unit completely before first use, then run a full discharge cycle. After one full charge-discharge cycle, full brightness should restore at a measured pack voltage of 5.4–5.6V at full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381321138266,"sku":"BWCS-KLE734SL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381321171034,"sku":"BWCS-KLE734SL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381321203802,"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\/ovaled-290152-replacement-battery-48v-1500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}