Power CellRelic
At the start of each combat, add zero-cost cards from your Draw Pile into your Hand.
Is Power Cell good in Slay the Spire 2?
Power Cell is a rare relic in Slay the Spire 2. While carried, it does the following: At the start of each combat, add zero-cost cards from your Draw Pile into your Hand. It currently underperforms most relics, sitting at F tier in our Slay the Spire 2 relic rankings.
Across 8 recorded runs, decks carrying it win 16.7% of the time, trailing the 19.0% average by 2.3%. It’s a more situational relic, showing up in just 0.2% of runs. The class that gets the most out of it is the Defect, at a 16.7% win rate. Defect players hold onto it in 1.4% of their runs.
It combos especially well with Capacitor, worth a +83.3% win-rate swing together. Another strong card to run with it is Coolheaded, worth +33.3% to its win rate. On average it’s acquired around floor 16 of a run. Its rare rarity shapes how frequently you’ll run into it.
It has 1 run wins against 5 losses in our tracked data. When runs carrying it end, the most frequent culprit is Test Subject Boss, which closes out 37.5% of them. Read on for Power Cell’s complete card, class, and threat breakdown before you decide to pick it up.
Power Cell Win Rate & Pick Rate
Power Cell’s 16.7% win rate trails the 19.0% all-run average by 2.3%, the gap charted below.
Run Outcomes with Power Cell
Power Cell has 1 wins and 7 losses over 8 tracked runs (12.5% won); abandoned runs count as losses.
- Wins 12.5%
- Losses 87.5%
Best Cards with Power Cell
Ranked by win-rate lift, the best cards to run with Power Cell are Capacitor (+83.3%), Coolheaded (+33.3%), and All for One (+16.7%).
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Power Cell Win Rate by Class
So far Power Cell is carried mainly by the Defect, who win 16.7% of their runs with it across 8 tracked.
The Defectappears in 1.4% of its runs (8 tracked)Power Cell Details
Power Cell is a rare relic carried in 0.2% of runs and usually picked up around floor 16.
At the start of each combat, add zero-cost cards from your Draw Pile into your Hand.
What Ends Runs with Power Cell
Power Cell’s most common run-enders are Test Subject Boss (37.5%).
- Test Subject Boss37.5% of runs
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Power Cell – Frequently Asked Questions
Is Power Cell good in Slay the Spire 2?
Across 8 tracked runs carrying it, Power Cell wins 16.7% of the time — +2.3% below the average run. Win rate reflects how often runs with the relic end in victory.
What does Power Cell do in Slay the Spire 2?
At the start of each combat, add zero-cost cards from your Draw Pile into your Hand.
How rare is Power Cell in Slay the Spire 2?
Power Cell is a Rare relic, picked up in 0.2% of tracked runs.
What is the best card to use with Power Cell?
In tracked runs, Power Cell has performed best alongside Capacitor, which lifts its win rate by +83.3% over 3 runs together.
See Also
Compare Power Cell with the rest of the best Slay the Spire 2 relics, cards, and classes below.