{"product_id":"karcher-k55-replacement-battery-48v-3000mah-ni-mh","title":"Kärcher K55 Replacement Battery 4.8V 3000mAh 4KR-1500SC\/V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eKarcher K55 \/ Broom K55 — 4.8V Ni-MH Replacement Battery (4KR-1500SC\/V)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V, 3000mAh Ni-MH battery pack for the Karcher K55 and Broom K55 cordless handheld vacuums. It replaces OEM part 4KR-1500SC\/V directly. The pack restores power to the vacuum motor when the original cell has degraded and no longer holds a usable charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK55 and Broom K55 fitment:\u003c\/strong\u003e\n    Both models share the same 4.8V four-cell NiMH pack format, identical connector pinout, and the same charge-termination profile. One battery covers both variants 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 full charge and draw tests on a K55 unit. The BMS held stable voltage across the motor's operating range and terminated charge correctly at full capacity without overrun.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging habit on the K55:\u003c\/strong\u003e\n    Do not leave the K55 sitting on the charging dock permanently. Continuous trickle charge on NiMH cells accelerates capacity fade faster than normal cycle wear. Charge to full, then remove the unit from the dock until the next use.\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 on the K55\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the motor draws more current than rated — usually because the filter is partially blocked. A restricted airflow path forces the motor to work harder, pulling higher current from the pack and causing voltage to sag under load. The indicator reads the resting voltage, not the load voltage, so it shows more charge than the motor can actually use. Clear the filter and check the dust bin before assuming the battery is at fault.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eK55 motor cuts out mid-clean then recovers after a short pause\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked filter, full bin, or a carpet snag — the motor spikes current demand beyond the pack's continuous output threshold. The BMS cuts the circuit to protect the cells, then resets once current demand drops. Clean the filter and empty the bin first. If the fault continues on a clear filter, measure pack voltage under load — it should hold above 4.2V during normal motor operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428053549146,"sku":"BWCS-KRK550VX-1","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428053581914,"sku":"BWCS-KRK550VX-2","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428053614682,"sku":"BWCS-KRK550VX-3","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KRK550VX-1.webp?v=1779933967","url":"https:\/\/batteryweb.com\/products\/karcher-k55-replacement-battery-48v-3000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}