What power bank is best for my smartphone with a 2100mAh battery?

Many factors affect how long a power bank can last including your phone, discharge and charge rate, mAh - real or fake, etc. Check out HetoGrow's quality specs and tips on how to avoid a fake power bank as well as "What capacity should you buy" when going for a solar power bank. You’ll find it useful.

Top Tips:

1. Buy a power bank that will top you up about twice a day. So, for a phone with 2100mah battery, you should get a REAL 4000mah power bank. This is because your phone will probably last you till noon depending on your phone settings - emails, sat nav, wifi connection, hotspot usage, apps running in the background, etc. If you are a heavy phone user, you may need a higher capacity power bank like 5000mah, 6000mah or 10000mah. These wont be too heavy to carry about.
2. You may also need to charge another gadget at same time so go for a power bank with a minimum of 2 USB 2.0 ports to ensure you can get a quick top up from your powerbank.
3. Look out for brand and warranty
4. This may sound a bit silly but if there’s a user guide, read it.
5. See if you must charge it up before using. Might be the case. So, check the user manual.

Hope this is helpful.