1. change one-use "useless" battery into "solid state battery":
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It hold X EU (i don't now how much make this balanced, maybe 5000?) at the creation, when discharged become a "exausted solid state battey" unable to recharge via EU injection like RE-batteries. Then if u put the exausted one into a crafting table with a slime ball, u gain a new "solid state battery".
The battery itself don't break, decharge like RE-batteries and stay uncharged after use, it's useful because it stacks like single use battery when fully charged even when exausted, so after first craft, u can re-use the conteiner of the battey. u have only to refill the slimeball which is the chemical reagent that make EU.
I heard here slime factory and Slimepak?
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2. alternative craft plant ball:
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4 sapling, 1 slime= 2 plantball
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3. resin doubler:
+ = 2
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4. lifesaving aerogel cable:
+ = carbonium gel
carbonium gel into extractor -> aerogel
----> lifesaving aerogel cable!
where are glass
are 3xinsulated iron cable
are aerogel
It support max 512 EU packets, EU loss 1/block, u can use this special cable like lifesaving: if for any reason the line of cable that the aerogel is linking will explode for overcurrent, only the aerogel will blow up, unlinking the rest of the line that remain safe.