Cheapest priced copy (Fourth Edition): $0.59 at Card Kingdom, near mint, their price list as of .
Green Mana Battery 
Artifact · Rare · Fourth Edition Foreign Black Border · #323
{2}, {T}: Put a charge counter on this artifact.
{T}, Remove any number of charge counters from this artifact: Add {G}, then add an additional {G} for each charge counter removed this way.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $0.59 to $1.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fourth Edition Foreign Black Border | 323 | Rare | — | — |
| Fourth Edition | 323 | Rare | $0.59 | — |
| Legends | 279 | Uncommon | $1.79 | — |
| Renaissance | 145 | Uncommon | — | — |
One ruling from Wizards of the Coast
- 4 October 2004Can be tapped even if it has no counters.