Reddit reviews HobbyKing XT60 Charged/Discharged Battery Indicator Caps (5 Pairs)
We found 2 Reddit comments about HobbyKing XT60 Charged/Discharged Battery Indicator Caps (5 Pairs). Here are the top ones, ranked by their Reddit score.
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I've got these rubber ones which are great, too
You could use an xt60 female and a male/male adapter on the charger instead to mate the two female ends.. safer but still prone to water damage etc.
Ideally you could use xt60 caps like this
https://www.amazon.com/gp/aw/d/B01FUOFZE6/
Though personally I just use a piece of black electrical tape on the tip when not in use.