Quick Answer
Open the Battery Ball seed container by linking an Electric hook plant in pot E to the energy node above the container while your partner holds pot E's light plate. Grow an Electric area plant in pot D first so the climate room opens, then reach the node from the upper floor. Take the seed and return through the open lower doors.
Where Is the Battery Ball Seed in We Were Here Tomorrow?
The Battery Ball seed sits in a dark round container in the middle of a brick-floored room in the Present, the room with the grey filing cabinets and a whiteboard. You find it during Xenobotany, after the earlier plant puzzles.
Some guides call it the Ultimate seed, because it grows the Ultimate plant that carries the Battery Ball. Both names point to the same seed. It never comes from a seed dispenser: only this container gives it to you, and the container hands out another one whenever you need it, so dropping or wasting a seed does not lock you out.
The container stays shut until its energy node, high above it, receives power. Neither player can carry power there. A grown electric plant has to supply it, and the Hook Gun player has to make the link.
How Do You Open the Battery Ball Seed Container?
Power the climate room with an Electric area plant, then grow an Electric hook in pot E and link it to the node above the container while your partner keeps pot E's plate held.
- Hook Gun player, Rockbury: take an Electric area seed from its dispenser in the main hall. At the fertiliser station, set the handles to Orange and Purple and process it.
- Plant it in pot D, in the middle of the greenhouse. Pot D has no light plate and needs none. In the Present this spot is the climate room; the plant powers it and both of its doors open.
- Goop Gun player, Present: walk through the opened climate room to the west wing.
- Both players: meet at the time glass by pot E and swap.
- Goop Gun player, Rockbury: take an Electric hook seed, give it Blue and Purple at the station, and plant it in pot E. Stand on the light plate for pot E and stay there.
- Hook Gun player, Present: go into the side room that just opened and ride its lift to the upper floor.
- From the upper floor, use your two hooks to connect the Electric hook plant to the energy node above the seed container. The container opens.
- Go down and take the seed. The lower doors are open now, so walk back through them.
| Plant | Value |
|---|---|
| Electric area recipe | Orange + Purple |
| Electric area pot | Pot D, no plate |
| Electric hook recipe | Blue + Purple |
| Electric hook pot | Pot E, plate held |
| Water for either | None allowed |
Electric plants must stay dry. Pot C is the only pot with water, so neither electric seed can grow there.
Why Can't You Reach the Energy Node?
The node hangs about 9.4 m above the floor and the Hook Gun reaches about 8 m, so you cannot link it while standing on the ground floor.
This is where most pairs get stuck. The Electric hook plant is visible from below and its top leans over the wall towards the container, so it looks like you only need to aim higher. Standing on the grey cabinets does not help either, and hooking from the window or the floor fails because the node is out of range or blocked.
The fix is height. The side room behind the climate room has a lift up to the upper floor, and from there both the plant and the node are in reach.
If the lift is not open for you yet, the planter route is the backup. Grow a Ladder in pot E first (Green and Orange). It reaches the top floor beside the node. Climb it, then have your partner swap the seed in pot E for the Electric hook and hold the plate again.
Why Does the Seed Container Close or Lose Power?
The Electric hook only stays fully grown while pot E's plate is held, so the power drops the moment the Goop Gun player steps off.
Keep your partner on the plate until the seed is in your hands, not just until the link appears. If they walk away to help, the plant shrinks and the container loses power before you reach it.
Goop can hold the plate instead of a player, but goop does not survive a swap. Hooks and goop come back to you whenever you trade places at a time glass, so any goop you left on a plate before swapping is gone. Put fresh goop down after the swap, or simply have your partner stand there.
If the container will not open at all, check the Present pot for clues. A small, dead-looking plant means the fertilisers are wrong. A half-grown plant means the plate is not held or the plant got water.
What Do You Do After Getting the Battery Ball Seed?
Take the seed to Rockbury, treat it with red and blue, and plant it in the water-filled pot C. Both players swap at the time glass by pot E again so the Hook Gun player carries the seed into the past.
The full recipe, the right planter and when to collect are on the Battery Ball cultivation page. Do not grab the Battery Ball the moment it grows: collecting it removes the time glasses, so swap back first.
If you have not cleared the climb above the greenhouse yet, go back to Xenobotany climate control access. The seed recipes on the diagram boards are covered in Xenobotany plant platforms.
FAQ
It is the dark round container in the middle of the brick-floored room in the Present, next to the grey filing cabinets and a whiteboard. It opens once its energy node is powered.
An Electric hook plant (Blue + Purple) in pot E, linked by the Hook Gun to the energy node above the container. Your partner has to keep pot E's light plate held the whole time.
Take the lift in the side room that opens after the Electric area plant powers the climate room. The node is too high to link from the floor or from the cabinets.
Yes. It grows the Ultimate plant, which carries the Battery Ball you need for the hall machine.