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0 What is the ideal power bank to get through emergencies?
For a three day power outage, a 20,000 mAh power bank is generally the "sweet spot." This capacity provides enough energy to recharge a modern smartphone approximately 4 to 5 times, which covers a heavy user for three days or two people for a weekend. Here is the breakdown of why this size works and how to choose the right one for your specific needs. 1. The Math: Why 20,000 mAh? Modern smartphones (like the iPhone 17 or Galaxy S26) have an average battery capacity of about 5,000 to 5,300 mAh. While it seems like a 15,000 mAh bank would provide three full charges , power banks lose about 20–30% of their energy during the voltage conversion process and as heat. Total Capacity Real Usable Energy Est. Full Charges (5,000 mAh phone) Best For... 10,000 mAh ~7,000 mAh 1.4 charges Emergency backup / 1 day 20,000 mAh ~14,000 mAh 2.8 - 3.2 charges 3-day trips / Moderate use 27,000 mAh* ~19,000 mAh 3.8 - 4.2 charges Power users / 2+ devices *27,000 mAh (100Wh) is the legal limit for most airline carry-ons. 2. Factors to Consider Charging Speed: Look for USB-C Power Delivery (PD). A power bank with at least 20W–30W output will charge your phone as fast as a wall outlet. Environment: If you are camping in the cold (below 5°C / 40°F), battery efficiency drops significantly. In these cases, lean toward a 25,000+ mAh unit to compensate for the "cold drain." Weight vs. Portability: A 20,000 mAh bank usually weighs about 350g–450g (roughly the weight of two smartphones). If you are backpacking and every gram counts, a high-efficiency 10,000 mAh bank (like the Nitecore NB10000) might suffice if you keep your phone in "Low Power Mode."
To be honest most of us have done this when it comes to emergency prep - Saying: "Today its OK, I'll do some Emergency/Survival prep tomorrow or in the weekend" There's no rush The chances are pretty low. If you were to be confronted with a survival situation right now, how ready are you? Without prep you'll be saying What do I need? Where is that _____ I need right now? What route do I go to escape? I wish I had charged my devices You'll be forced to make multiple decisions in a very short time. Your adrenaline will be through the roof, the kids will be panicking, you will not be mentally effective for the first few minutes Take the time and start making a plan now, even if it's just things to consider - like food reserves, useful items, who to contact, at least make a start. Companies like Next 72 Hours and Crisis Bunker can be a great help. Don't forget Lert Info. We keep you far more informed than just Civil Defence announcements.
The first step to make it through a storm with minimal issues is preparedness. Below are some key considerations to make it much easier. Don't forget to register for your free alerts - https://www.lert.info/ We'll have information others won't have.
0 How Much Water You need in and Emergency Need?
If your water supply is cut off due to weather, an earthquake, or water infrastructure failure , how prepared are you? It's simple and quick to build up a supply. You'll need at least three litres of drinking water per person per day. This will be enough for drinking and basic hygiene. Extra water is needed for cooking and make sure to add drinking and clean-up water for your pets. Check out the Get ready website for more information https://getready.govt.nz/.../house.../supplies/storing-water This video is one of the most coprehensive we've seen and it's recent. Some info pertains to the States https://youtu.be/Btqqwd_cLiA and the presenter speaks of Gallons. The conversion is 3.79 Litres
Auckland City Council has created a handy tool around flood risks. There are four flood categories Flood Plains Flood Prone Areas Overland Flow Paths Coastal inundation Check out the map at https://bit.ly/3SmGUUU There is a description of eachand you can zoom in on the map for your street by the looks. Knowing the risks can keep you safer.
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