What adapter is this?

rjenkinsgb said:

It appears to be a "4mm HXT"; a rather odd type. You are better off cutting that off and replacing with XT60 connectors. They are a common standard and quite cheap.

https://www.ebay.co.uk/itm/283710503152?hash=item420e76b8f0:g:pCwAAOSwmU9d9VN~

Or you can get plug-in adapters from Hobbyking:

HXT 4mm Male/Female to XT60 Female Battery Adapter (2pcs)

One end has a 4mm HXT male/female connector and the other has an XT60 female connector. Specs: Battery Connectors: 4mm HXT male/female, XT60 female Wire Covering: Silicone Wire Colors: Red/Black Wire Diameter: 14AWG Length: 30mm Quantity: 2pcs

hobbyking.com

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