Upgrades

Every drawer in this mod uses Functional Storage's own upgrades. There are no new upgrade items to craft, apart from the Wireless Charger.

Storage Upgrades

Storage Upgrades multiply the capacity. Every slot multiplies again, so all four slots count. With the default config, each upgrade multiplies an Energy Drawer by its Functional Storage multiplier divided by 4:

Upgrade	Multiplier per upgrade	1 upgrade	2 upgrades	3 upgrades	4 upgrades
(none)		500K FE
Copper	×2	1M FE	2M FE	4M FE	8M FE
Gold	×4	2M FE	8M FE	32M FE	128M FE
Diamond	×6	3M FE	18M FE	108M FE	648M FE
Netherite	×8	4M FE	32M FE	256M FE	2.048B FE

The multipliers come from Functional Storage's config, so a modpack that changes them there changes energy drawers too. The divisor, and the base size, are in this mod's Configuration.

The Max Storage Upgrade makes the drawer as big as it can count (about 9.2 × 10¹⁸ FE).

An upgrade cannot be taken out of a drawer that would be too full without it.

Chemical and Source drawers

Chemical Drawers and the Source Drawer follow Functional Storage's fluid curve, like the fluid drawer next to them: each upgrade multiplies by its multiplier divided by 2 (Copper ×4, Gold ×8, Diamond ×12, Netherite ×16). Four Netherite upgrades take a 32,000 tank to 2,097,152,000.

Utility upgrades

Upgrade	On an Energy Drawer
Redstone Upgrade	Emits a redstone signal from 0 to 15 that follows the charge
Void Upgrade	Keeps accepting energy when full, and discards what does not fit
Creative Vending Upgrade	Turns the drawer into an endless source of energy
Item and fluid upgrades (Pusher, Puller, Collector...)	Have nothing to move in an energy drawer, and do nothing

A comparator next to an Energy Drawer reads the same 0 to 15 value as the Redstone Upgrade.

Wireless Charger

Put a Wireless Charger in an Energy Drawer's utility slots, and the drawer charges what the players around it carry: their inventory, their armour and their offhand item.

Copper Ingot	Redstone Dust	Copper Ingot
Redstone Dust	Ender Pearl	Redstone Dust
Copper Ingot	Redstone Dust	Copper Ingot

• Range: 8 blocks from the drawer.
• Rate: 1,000 FE per second, shared between everyone in range.
• It never hands out more energy than the drawer holds.
• It only works in an Energy Drawer. In any other drawer it does nothing.

Range, rate and interval are all in the Configuration.