Good question — the right power bank for an iPhone depends on how much charging you want, how fast you want it, and whether you want MagSafe (wireless) convenience. Below are clear guidelines plus a handful of reliable options and what they’re best for.

What to look for

• Capacity (mAh): higher = more charges but heavier. Rough guide for iPhones:
  • 5,000–6,000 mAh: ~1 full charge for most iPhones — light and pocketable (daily carry).
  • 10,000 mAh: ~1.5–2.5 charges — good balance for a day or overnight trip.
  • 20,000 mAh+: 3+ charges — best for travel or multiple devices.
• Output & fast charging: Look for USB‑C Power Delivery (PD). A PD output of 18–30W will fast‑charge an iPhone quickly (iPhone supports fast charge up to about 20–27W depending on model).
• Ports: USB‑C only vs USB‑C + USB‑A — choose based on your cables and other devices.
• Pass‑through charging: lets you charge the bank and phone at the same time — convenient but slightly slower.
• MagSafe compatibility: if you want magnetic wireless charging (no cable), choose a MagSafe‑compatible power bank. Keep in mind MagSafe wireless is slower and wastes more energy than wired PD charging.
• Size/weight: higher capacity = heavier. Consider what you’ll actually carry.
• Safety & brand reputation: pick well‑known brands with protections against overcharge, short circuit, overheating.

Recommended types / examples (good, widely‑trusted choices)

• Compact daily carry (pocketable)
  • 5,000–6,000 mAh, USB‑C PD 18–20W: good for one full fast charge. Great if you want something light in a jacket pocket.
• Best balance (commuter / day trip)
  • 10,000 mAh, USB‑C PD 18–30W, 1–2 ports: the most common sweet spot — enough capacity without heavy weight.
• Travel / multi‑device
  • 20,000 mAh+ with 45–65W USB‑C PD (if you also want to charge laptops) and multiple ports.
• MagSafe / magnetic wireless
  • MagSafe‑compatible power banks (about 5,000–10,000 mAh) that magnetically attach to iPhone 12 and later for convenient wireless top‑up. Good for quick top-ups when you don’t want a cable; still slower and less efficient than wired PD.

Popular, trustworthy brands to consider

• Anker — wide range (compact, PD, high‑capacity); strong reliability and warranty.
• Belkin — makes MagSafe‑compatible options and good PD banks.
• RAVPower / AUKEY — reliable alternatives with good prices (check specs and warranty).
• Mophie — premium options, some with MagSafe support.
• Apple MagSafe Battery Pack — convenient but smaller capacity and more expensive per mAh (magnetic wireless only; not a big power bank).

Practical suggestions

• If you want the fastest recharge for an iPhone, use a USB‑C to Lightning cable and a PD power bank that can deliver ~20W.
• For everyday carry: a 10,000 mAh PD bank is a solid pick.
• For travel: 20,000 mAh+ with multiple ports.
• For MagSafe convenience: choose a MagSafe‑compatible bank, but keep a PD cable+bank for faster charging when you can.
• Always use good quality cables. Cheap cables can slow charging or cause issues.
• Buy from reputable retailers so you get authentic products and warranty coverage.

If you want, I can:

• Suggest 3–4 specific models available in Australia (I can check current stock/prices), or
• Pick the best single recommendation for your needs if you tell me whether you prefer maximum portability, fastest charging, MagSafe, or maximum capacity.

Which do you prefer: portability, fastest wired charging, MagSafe convenience, or maximum capacity for travel?