Anker 733 for Steam Deck and Nintendo Switch: Gaming Power Test
Portable gaming on Steam Deck and Nintendo Switch has created a new use case for high-output power banks — you need enough wattage to actually charge the device faster than it drains. Can the Anker 733 keep up?
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Steam Deck Compatibility
Valve’s USB-C Power Requirements
The Steam Deck draws approximately 15W during light gameplay and up to 25–30W under heavy GPU load. The official Valve charger outputs 45W.
Anker 733 in wall mode:
– Delivers ~45W to Steam Deck via USB-C 1
– Result: Charges faster than the deck drains during normal gameplay ✅
– 0–100% charge time: ~75–90 minutes
Anker 733 in battery mode:
– Delivers ~30–35W to Steam Deck
– During light gaming: Net positive — battery level slowly rises
– During heavy gaming (AAA games): Net neutral to slight drain
– Result: Extends playtime by 2–3 hours per bank charge ✅
Real Gaming Session Test (Battery Mode)
Starting with full Anker 733 + Steam Deck at 30%:
| Game | Power Draw | Bank Life | Steam Deck Battery End |
|——|———–|———–|———————-|
| Stardew Valley (light) | ~15W | ~4 hours | 90% (charged up!) |
| Elden Ring (heavy) | ~28W | ~3 hours | 55% (slight drain) |
| Cyberpunk (max settings) | ~32W | ~2.5 hours | 25% (draining) |
Nintendo Switch Compatibility
Nintendo Switch charges via USB-C at 18W (dock mode) and 7.5W (handheld).
Anker 733 in battery mode:
– Delivers 18W in dock mode via USB-C — matches official charger ✅
– In handheld: Delivers 7.5W — perfectly matches requirement ✅
– Switch charges while you play in both modes
Switch Battery Extension per Full Bank
| Mode | Power Draw | Net from Bank | Playtime Extension |
|---|---|---|---|
| Handheld (light games) | ~7W | ~7.5W to battery | +5–6 hours |
| Handheld (heavy games) | ~10W | ~8W to battery | +4–5 hours |
| Tabletop / Dock | ~18W | Charges at dock rate | +3–4 hours |
Practical Verdict for Gamers
The Anker 733 is excellent for Nintendo Switch — the Switch’s modest power draw means the bank charges it comfortably during gameplay. For Steam Deck, it works well in battery mode for most games, though very demanding titles may see a slow net drain.
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🔋 Further Reading: Read our full Anker 733 GaNPrime 65W Power Bank Review — charging benchmarks, port specs, TSA compliance, and our final verdict.
