{"product_id":"wetruner-robot-pool-cleaner-replacement-battery-74v-5200mah-li-ion","title":"WetRuner Robot Pool Cleaner 7.4V Replacement Battery 100353","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWetRuner Robot Pool Cleaner — 7.4V Li-ion Replacement Battery (100353)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 5200mAh Li-ion battery replaces part number 100353 in the WetRuner Robot Pool Cleaner. The robot uses this cell to power its drive motors and suction system during autonomous floor and wall cleaning cycles. Capacity figures are taken directly from product data at 38.48Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWetRuner Robot Pool Cleaner fit:\u003c\/strong\u003e\n    This battery matches the voltage rail and connector spec the WetRuner's onboard BMS expects. A mismatch in voltage or handshake will cause the unit to refuse to start or shut down immediately after power-on.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full discharge and recharge sequences under load conditions that simulate the dual-motor draw of the drive and suction systems. The BMS held cutoff thresholds within expected range at both ends of the charge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-cleaning storage tip:\u003c\/strong\u003e\n    After the robot finishes a cycle, remove it from the charger once the battery reaches full charge. Leaving the unit on continuous charge accelerates capacity fade in Li-ion cells — the WetRuner's charger is not designed for indefinite float charging.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the WetRuner shuts off mid-cycle before the battery is depleted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe WetRuner runs two motors simultaneously — one for drive, one for suction. When debris partially blocks the intake, the suction motor draws significantly more current than rated. The BMS reads this as an overcurrent condition and trips the protection circuit, cutting power to the whole unit. Clearing the filter and intake path before each session keeps motor draw within the BMS threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWetRuner not charging after fitting the replacement battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome WetRuner chargers expect a specific BMS handshake before beginning the charge cycle — if the replacement cell's protection board does not respond correctly, the charger stays dark or shows a fault LED. First, confirm the charger output reads 8.4V with a multimeter; that is the correct full-charge voltage for a 7.4V Li-ion pack. If the charger output is correct but the battery still does not begin charging, the cell may be at too low a resting voltage for the BMS to wake — connect the battery for 10–15 minutes and check whether the indicator changes state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426378383450,"sku":"BWCS-WRP400VX-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426378416218,"sku":"BWCS-WRP400VX-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426378448986,"sku":"BWCS-WRP400VX-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WRP400VX_1.webp?v=1779931027","url":"https:\/\/batteryweb.com\/products\/wetruner-robot-pool-cleaner-replacement-battery-74v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}