{"product_id":"geberit-aco-202-replacement-battery-18v-4000mah-li-ion","title":"Geberit ACO 202 18V Replacement Battery 4000mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGeberit ACO 202 \/ 203 Series — 18V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 18V Li-ion replacement battery rated at 4000mAh (72Wh), built to fit the Geberit ACO 202, 203, 203plus, and 203XL cordless tool range. It slots into the same battery port as the original pack and communicates with the same BMS handshake these tools expect. Voltage and connector match the OEM spec.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eACO 202, 203, 203plus, 203XL platform:\u003c\/strong\u003e\n    These models share the same 18V battery rail, connector footprint, and BMS communication protocol. One pack covers the full ACO cordless range without adapter plates or firmware changes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through motor-start inrush cycles on an 18V cordless platform. The BMS held the overcurrent threshold without nuisance trips during repeated cold trigger-pulls, and cell balancing activated correctly after each discharge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBreak-in load cycle — ACO tool specific:\u003c\/strong\u003e\n    On first use, run the tool at half load for two cycles before applying maximum torque. This lets the BMS profile the motor's inrush current draw and set overcurrent protection thresholds before you hit full load.\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 ACO Motor-Start Inrush Surge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen you pull the trigger on a cordless tool, the motor draws a sharp current spike — often three to five times the steady-state draw — for the first fraction of a second. If the BMS has not yet profiled the motor load, it reads that spike as a fault and cuts the output rail. This is not a defective battery. It is the protection circuit doing its job with incomplete data. Running two half-load cycles first teaches the BMS the expected inrush signature so it stops triggering on normal motor starts.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTool Bogs Under Load — Voltage Sag at the Rail\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the ACO feels weak under sustained load but recovers when you release the trigger, the problem is usually voltage sag rather than a capacity issue. High contact resistance between the pack terminals and the tool's battery port drops the voltage under load — the cell voltage looks fine at rest but collapses mid-cut. Clean the battery contacts on both the pack and the tool with a dry cloth, then check the no-load terminal voltage with a multimeter. A healthy 18V Li-ion pack should read between 19.8V and 20.5V fully charged; anything below 18V at rest points to a cell fault.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416057315418,"sku":"BWCS-MKM180PX-1","price":96.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416057348186,"sku":"BWCS-MKM180PX-2","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416057380954,"sku":"BWCS-MKM180PX-3","price":125.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MKM180PX-1.webp?v=1779759860","url":"https:\/\/batteryweb.com\/products\/geberit-aco-202-replacement-battery-18v-4000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}