The page tabulates Invention charge drain at the most common tiers, and provides a custom form for additional tiers, if required. For details on the formula used, see Charge pack § Charge drain.
2H = Two-handed weapon
MH/A = Main-hand weapon or an Armour piece
OH = Off-hand weapon
T = Tool
template = Charge drain calculator
form = chargedrain_in
result = chargedrain_res
param = tier|Tier|77|int|1-100||
param = coins|Coins?|false|check|||
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The result will appear here when you submit the form.