This is a remix of the XT30, XT60, XT90 Charge Block by bwegner : https://www.thingiverse.com/thing:2630764
Because I don't have applications for the XT30 and the JST-SH Servo Plug, I removed these and added a T plug instead.
Also added an optional mid piece. I ran out of space when soldering... ;)
Another safety tip: use this cap on the T plug: https://www.thingiverse.com/thing:3191997
You will need to solder up some plugs and connect a positive and negative lead to your charger. Plugs were glued into the block one the short leads were soldered to the plugs. A 4.5mm hole was drilled thru the XT90 terminals for the connecting cable (See picture). you will need to take a bit of time and care with the soldering.
"NEVER connect more than one battery to the charge block at the same time."