- Win Rate
- 28.0%
- Pick Rate
- 0.2%
- Δ vs Avg
- +14.2
Power Cell Relic
- Rarity
- Rare
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
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 51 recorded runs, decks carrying it win 28.0% of the time, comfortably clear of the 13.8% average, by 14.2%. 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 28.0% win rate. Defect players hold onto it in 1.1% of their runs.
It combos especially well with Gunk Up, worth a +22.0% win-rate swing together. Another strong card to run with it is Overclock, worth +15.8% to its win rate. On average it’s acquired around floor 22 of a run. Its rare rarity shapes how frequently you’ll run into it.
It has 14 run wins against 36 losses in our tracked data. When runs carrying it end, the most frequent culprit is Test Subject Boss, which closes out 13.7% 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 28.0% win rate clears the 13.8% all-run average by 14.2%, the gap charted below.
Run Outcomes with Power Cell
Power Cell has 14 wins and 37 losses over 51 tracked runs (27.5% won); abandoned runs count as losses.
- Wins 27.5%
- Losses 72.5%
Pick or Skip: Power Cell
Out of 86 recorded offers Power Cell is taken 60.5% of the time, and taking it is worth +12.8% in pick lift — 27.4% for runs that picked it against 12.1% for runs that skipped, across 51 decided runs.
Taken 52 times out of 86 offers.
Pick rate when offered counts offers, not runs: out of every time the game put this in front of a player, how often it was taken. It is not the same number as the share of runs that end up containing it.
Pick lift is the sample-adjusted gap between runs that took the option and runs that passed on it. It is the fair way to rank choices, because raw win rates put the smallest samples on top.
Best Cards with Power Cell
Ranked by win-rate lift, the best cards to run with Power Cell are Gunk Up (+22.0%), Overclock (+15.8%), and Boot Sequence (+12.0%).
Gunk Up16 runs
Overclock16 runs
Boot Sequence15 runs
Capacitor15 runs
Coolheaded16 runs
Go for the Eyes26 runsBased 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 28.0% of their runs with it across 51 tracked.
The Defectappears in 1.1% of its runs (51 tracked)Power Cell Details
Power Cell is a rare relic carried in 0.2% of runs and usually picked up around floor 22.
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 (13.7%), Queen Boss (9.8%), and Kaiser Crab Boss (5.9%).
- Test Subject Boss13.7% of runs
- Queen Boss9.8% of runs
- Kaiser Crab Boss5.9% of runs
- Infested Prisms Elite5.9% of runs
- The Insatiable Boss5.9% of runs
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Power Cell – Frequently Asked Questions
Is Power Cell good in Slay the Spire 2?
Across 51 tracked runs carrying it, Power Cell wins 28.0% of the time — +14.2% above 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 Gunk Up, which lifts its win rate by +22.0% over 16 runs together.
Should I take Power Cell when it is offered?
Players take Power Cell in 60.5% of its 86 recorded offers. Runs that picked it win 27.4% (51 decided runs) against 12.1% for runs that skipped it (33 decided runs) — a +15.3% difference, and a +12.8% pick lift once sample size is accounted for.
See Also
Compare Power Cell with the rest of the best Slay the Spire 2 relics, cards, and classes below.