I am playing Infinity Lite 1.10 Version 1.8 and I cannot for the life of me get my Solar Neutron Activators to accept Lithium from any side using any piping solution. I have tried everything from the Mekanism Pipes (all tiers) to Ender IO conduits, to Extra Utilities Pipes using Transfer and Receiver nodes. Note in the Photo with the Extra Utils Piping going into the bottom they connect but the Extra Utils Pipes do not Transmit the Lithium.

Lithium must be in gaseous form. Convert it in Rotary Condensator (use Decondensating mode) and connect with pressurized pipes to bottom (front side is output of gaseous tritium).
See http://wiki.aidancbrady.com/wiki/Solar_Neutron_Activator

Thanks! This was a User error >.> I'm stupid sometimes, thanks guys!

You can close your own issues ;) It will save others some time to check all and close them if needed

Are those fluid pipes you're trying to connect? The SNA works with gaseous lithium and produces gaseous Tritium. To make it work with your ender fluid tank you'll have to convert the liquid to a gas with a rotary condensentrator.