Portable Chargers - or how to make your phone last all day

A friend mentioned earlier today that she wished her phone could hold a charge during one of her longer days.  It might be 14 hours from when she leaves the house in the morning, until she gets home.  It would be nice if her phone could last as long.

I told her about portable chargers, and showed her my 15,000 mah Anker.  She made a note of it.  

When I got home, it occurred to me that she probably spelled it Anchor in her notes.  I found myself about to write a long email to to clarify, and add some extra points.  

Instead, I thought I'd make this blog post.

A portable charger is a device about the size of your phone, although it can be larger and heavier, that is in itself a separate battery.  Being that it is nothing but a battery, they can recharge your phone several times over.

You have seen these a the checkout of your pharmacy.  The ones there are small tubular ones that look much like a lipstick.  Those are about 2200 mah.

Google definition:  A milliampere hour (mAh) is 1000th of an ampere hour.

Phone batteries are generally 2000 to 3500 mah.  Therefore, if your phone is 2200 mah, and your little lipstick Portable Charger is also 2200 mah, it means you can charge your phone a single time from it.

Larger batteries are available.  Personally, I like the Anker brand and have bought several for the family and as gifts.

They have one giant one of 25,600 mah.  That would recharge a 3000 mah battery over 8  times.

As of today (June 2015), that sells for $80 at Amazon.

This link takes you to the Anker Portable Chargers at Amazon. 

I think the way to find the best value is to discover the cost per mah.  That 25,600 mah charger for $80 would get you 320 mah per dollar.

A 3200 mah device for $20 would be about 120 mah per dollar.

The closest to the one I own is a 16,000 mah for $40.  That's 400 mah per dollar. I think that is a pretty good value, but I didn't do the math for each of the many Ankers Amazon offers.

The Portable Chargers generally do not come with their own charger, but charge from any charger for an Android phone.

They are dirt cheap.  Here are a few I found on Amazon..  



Note:  All Amazon links here are  Amazon Affiliate Links.

Crossposted from my personal blog.