I measured the connector on our original charger and it was 4.0mm OD and 1.3mm ID. The listed specs for this charger are 4.0mm OD, 1.35mm ID, so it should have worked, but it went into the port too loosely and the charger cycled on and off because it was too loose a fit. When I measured the connector on this manufacturer's charger, it was 3.89 mm in outside diameter and 1.42 mm in inside diameter. Sent this one back and got another one from a different seller!
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