yes the red is the pos and the black neutral the other small plug can be used for charging with an appropriate charger but with a balance charger the small plug is to send info to the charger for each individual cell in the battery...so in short red pos. black neutral and small plug for charging and monitoring
Some of the new lipos with HXT 4mm connector like the nanotech and zippy compact, my planes and helis are using the red DIN plug so this charge lead is suitable for my case and I can use it when charging the lipo.
the t-plug from the adapter is connected to the esc or the charging cable T-plug mä**nnlich.und the hxt (red) is on akku.er not male and not female.
I have been buying HXT and T connectors plus the wire from HobbyKing to make up these identical jumpers. Wish they had them a lot earlier as it would have been far simpler to buy them and spend my time flying.