Best Power Bank NZ

Power bank shopping in NZ mostly comes down to three brands on the shelf at PB Tech, Noel Leeming and Mighty Ape -- Anker, Belkin and Baseus. Here's how to pick the right capacity and wattage without overpaying.

Capacity vs weight -- the trade-off nobody explains upfront

The mAh number on the box is not what you actually get. Power banks lose 20-35% of their rated capacity converting between the internal battery voltage and the 5V/9V/20V your phone or laptop wants. A "20,000mAh" bank realistically delivers three full charges to an iPhone, not the four the packaging implies. Bigger capacity also means more weight and bulk -- a 10,000mAh bank is pocketable at around 180-220g, while a 20,000mAh unit is closer to 400g and a 30,000mAh laptop-capable bank can weigh 600g or more, which is a genuine "do I actually want to carry this" decision for a commuter bag.

For phones only: Anker 10,000mAh and Baseus 20,000mAh

If you're just topping up a phone once or twice a day, a compact 10,000mAh bank is the sensible buy. Anker's PowerCore and Nano-series slim banks are the standard reference point here and are widely stocked at PB Tech and through Anker's own NZ storefront (anker.com/nz), typically priced from around $40-60 NZD for the smaller 10,000mAh units. Step up to a Baseus 20,000mAh model (commonly listed with dual USB-A plus USB-C at 2.4A output) and you're in the $50-80 NZD bracket depending on retailer promotions -- enough for multiple full phone charges over a weekend trip or festival without carrying a brick.

Fast charging wattage actually matters now

Almost every phone sold in NZ since 2022 supports some form of fast charging over USB-C (18W-45W depending on brand), and a power bank that only outputs 5W/1A will charge painfully slowly by comparison -- sometimes taking 3-4 hours for a full phone charge instead of under 90 minutes. Look for banks explicitly listing USB-C Power Delivery (PD) output of at least 20W for phones, or 45W-100W if you want to top up a MacBook or Windows ultrabook from the same bank. Anker and Baseus both sell dedicated 100W PD "laptop power bank" units in the 20,000-30,000mAh range that will charge a MacBook Air or lightweight Windows laptop, generally sitting in the $130-200 NZD bracket at PB Tech.

Belkin -- fewer options, but reliably well-built

Belkin's NZ range is smaller than Anker's or Baseus's but tends to sit at the premium end, with a focus on MagSafe-compatible magnetic power banks for iPhone and simple, well-finished USB-C PD units. If you want a MagSafe snap-on battery pack specifically for an iPhone 15/16/17 series device, Belkin and Anker are both credible options and are the two brands most consistently stocked in NZ with official local warranty support.

Airline carry-on rules you need to know

Any power bank you're flying with domestically or internationally must go in carry-on baggage, not checked luggage, and New Zealand-based carriers follow the standard rule of a 100Wh limit without airline approval (roughly a 27,000mAh bank at 3.7V nominal cell voltage, though actual limits are calculated in Wh not mAh -- check the label). Most consumer power banks sold in NZ, including the 20,000-30,000mAh Baseus and Anker units, sit comfortably under this limit, but it's worth checking the Wh rating printed on the bank itself before a flight.

Our picks by use case

• Everyday phone top-up: Anker or Baseus 10,000mAh slim bank, roughly $40-60 NZD.
• Weekend trip / festival: Baseus or Anker 20,000mAh with USB-C PD, roughly $60-90 NZD.
• Charging a laptop too: Anker 100W PD 20,000-25,000mAh, roughly $150-200 NZD.
• iPhone MagSafe convenience: Belkin or Anker magnetic snap-on bank, roughly $70-110 NZD.