{"product_id":"gtech-airram-mk2-replacement-battery-222v-2500mah-li-ion","title":"Gtech AirRam MK2 Compatible Battery 22.2V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGtech AirRam MK2 Series — 22.2V Li-ion Replacement Battery (103A105)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 22.2V 2500mAh lithium-ion battery replaces part number 103A105 in the Gtech AirRam MK2 cordless stick vacuum. It fits the AirRam MK2, AirRam MK2 K9, AR20, and AR21 models. Capacity is 55.5Wh — matched to the original specification in the product data.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAirRam MK2 and K9 compatibility:\u003c\/strong\u003e\n    The MK2, MK2 K9, AR20, and AR21 share the same 22.2V cell configuration, connector pinout, and BMS communication protocol — which is why one battery covers all four variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through full charge and discharge cycles on the AirRam MK2 platform. The BMS correctly reported cell state to the vacuum's charge indicator, and the motor spun up without triggering overcurrent cutoff under normal floor load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging habit on the AirRam MK2:\u003c\/strong\u003e\n    Do not leave the vacuum sitting on the charging dock permanently. The AirRam MK2 dock does not cut trickle current after the battery reaches full charge, so continuous docking accelerates capacity fade. Charge to full, then remove it from the dock.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSuction dropping before the battery indicator reaches low\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eOn the AirRam MK2, suction loss often happens well before the battery LED shows a low charge warning. The motor draws more current when the filter is partially blocked, which pulls the cell voltage down faster than the indicator circuit expects. The BMS reads this as normal discharge, so no warning fires. Check and clean the filter first — a restricted filter forces the motor into a sustained high-draw state that mimics a depleted battery.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cuts out mid-clean then recovers after a pause\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. When suction is restricted — by a blocked filter, a tangled brush bar, or a partial blockage — the motor draws a sustained current spike that exceeds the BMS threshold. The BMS shuts the output to protect the cells, then resets after a short cool-down. Clear any blockage and inspect the filter before assuming the battery is at fault. After clearing the restriction, confirm the pack is sitting above 20V before restarting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428017897562,"sku":"BWCS-GAR200VX-1","price":94.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428017930330,"sku":"BWCS-GAR200VX-2","price":110.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428017963098,"sku":"BWCS-GAR200VX-3","price":123.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GAR200VX-1.webp?v=1779933824","url":"https:\/\/batteryweb.com\/products\/gtech-airram-mk2-replacement-battery-222v-2500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}