{"product_id":"wingart-ags-72-li-replacement-battery-74v-2200mah-li-ion","title":"Wingart AGS 72 Li Replacement Battery 7.4V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWingart AGS 72 Li — 7.4V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 2200mAh Li-ion replacement battery for the Wingart AGS 72 Li cordless angle grinder. It slots into the grinder's battery cradle and restores power for grinding, cutting, and surface preparation work. Capacity is 16.28Wh — matched to the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAGS 72 Li platform fit:\u003c\/strong\u003e\n    The AGS 72 Li runs a 7.4V two-cell Li-ion architecture. The battery's cell configuration, BMS voltage thresholds, and connector pitch match what the tool's charge controller expects. Swapping to a mismatched voltage or pinout will trigger immediate BMS lockout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through repeated trigger-pull events simulating grinder motor inrush. The BMS held its overcurrent threshold without nuisance tripping, and cell voltage recovered cleanly between bursts.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use load conditioning:\u003c\/strong\u003e\n    Run the grinder at half load for two cycles before any heavy grinding or cutting work. This gives the BMS time to profile the motor's inrush current draw and set its overcurrent protection threshold correctly before you push maximum torque.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff on AGS 72 Li motor-start inrush surge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen you pull the trigger on an angle grinder, the motor draws a spike of current well above its steady running load — often three to five times higher for a fraction of a second. A BMS calibrated to a degraded or partially charged pack may read this spike as a fault and cut output immediately. On the AGS 72 Li, this shows as the grinder dying the instant the disc tries to spin. The fix is to ensure the pack is charged above 7.0V before use, and to complete two light-load conditioning cycles so the BMS sets its inrush window correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger not recognising a stored AGS 72 Li pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that have sat unused for several months can drop below the charger's acceptance voltage — typically around 6.0V for a 7.4V two-cell pack. When this happens, the charger sees the pack as faulty rather than discharged and refuses to start a charge cycle. Most chargers compatible with the AGS 72 Li have a recovery or boost mode that trickle-charges at low current until the cells climb back above 6.2V, at which point normal charging resumes. If your charger has no recovery mode, a brief connection to a bench supply at 6.5V and 100mA for ten minutes is usually enough to bring the pack back into the acceptance window.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416070914138,"sku":"BWCS-BST200PW-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416070946906,"sku":"BWCS-BST200PW-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416070979674,"sku":"BWCS-BST200PW-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BST200PW-1.webp?v=1779760040","url":"https:\/\/batteryweb.com\/products\/wingart-ags-72-li-replacement-battery-74v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}