Anker Power Bank, PowerCore 5000 mAh Portable Charger, External Battery Power Bank, Compact Mobile Phone Charger with Power IQ, Compatible with iPhone XS Max/XR/XS/X/8/8 Plus, iPad, Galaxy and More

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Another use case of mAh is in smartphone batteries. The battery's capacity is a critical part of a smartphone's specs, but a bigger battery on a smartphone doesn't necessarily mean it'll have a longer battery life. Normally these types of ‘show off’ phones are more of a marketing-stunt than real-life products… but not so with the P18K.

The Xiaomi Mi Max 3 has healthy 5500mAh battery and a humongous 6.9″ display! If you’ve been looking for a smartphone to binge-watch YouTube, Netflix and Play the occasional game without having to squint! The Mi Max 3 is for you! The Vernee X1 doesn’t compromise. It’s available in two variants offering up to 6GB of RAM’s and 128GB’s of storage coupled with MediaTek’s next generation Helio P23 CPU. While not a powerhouse, it offers extreme mid-range efficiency. Onto the battery life, and we’ve got 5150mAh’s to play with. This means the F1 Play will easily last for 2-3 days and with this big battery comes an impressive 18w fast charger which will give you a 40% charge in less than 30 minutes.Finally, with a battery this big you’ll want some serious fast charging and the A40s doesn’t disappoint with a 15w faster charger included in the box. The display is Full HD, its super slim at only 8mm and is also featherweight at only 221 grams (size-considered). I’ve reviewed my fair share of 5.5″ smartphones that weigh more than the 6.9″ Mi Max 3. With brands like Xiaomi now dominating the mid-range market, mobile giant Samsung has upped its game in 2020 releasing to the affordable M31 with a huge 6000mAh battery. Now onto the battery. Yes that’s right, under the hood is a 9000mAh battery that will easily last 2 days of power usage and 3-4 of light usage. For a massive battery like this, you need some serious charging power and it comes in the form of PumpExpress 4.0 (5V/5amps). Couple this with a beautiful 6.47″ curved ( HDR10) AMOLED display, a gaming-ready Snapdragon 730G plus tons of storage and we have ourselves one of best value phones of 2020.

Another nice bonus is the included accessories. Inside the box, you’ll find a 30W fast charger, a case, and headphones. Thank you very much, Xiaomi! This app helps by automatically setting up alerts to remind you to unplug your phone when it hits 80% and not letting the charge drop below 20%. By doing this you can effectively double the usable lifespan of your device.After all this talk about batteries and electric currents, it's time to answer the million-dollar question. Does a higher mAh rating mean more battery life? Well... it depends.