HPR4243: Hand Warmer, long term product review

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Background

Ken suggested at Oggcamp to do a long term product review of my hand
warmer.

Product information

• The model: OCOOPA 10,000 mAh capacity




• Purchase date: December 2020




• Cost: £25




• Description: It has a single button used to turn it on and to
  adjust the heat level.




• It has three different USB sockets. These are used when either
  charging the hand warmer or using it as a power bank to charge other
  devices.

Links to product

Story

During OggCamp I mentioned to Ken that I had an electric hand warmer
and he asked me if it was any good. He suggested I do a long term
product review of it. So here is my review

I do lots of dog walking and suffer from cold hands.

I've had different hand warmers over the years:

• Ones that you boil in water. Don’t last long


• One that is activated by removing from its packet. Lasts for many
  hours actually too long. They seems very wasteful as they are single
  use.


• Zippo hand warmer works well but is a faff to setup and sometimes
  goes out.

This electric hand warmer is by far the best solution I've found.

It saved me twice during OggCamp as I used it on two occasions to top
up my phone. When arriving and leaving OggCamp.

This was the first time I’d used the hand warmer to charge anything.
I was very glad it worked.

At the time of purchase I was rather sceptical about the whole idea
of electric hand warmers.

The batteries are not used in ideal conditions. They get very hot and
when in use a lot of current is drawn from them.

My Hand warmer is now almost 4 years old and is still going strong
with no noticeable degradation in capacity.

It has a rated capacity is 10,000 mAh. The highest charge it achieved
was about 1 year into use. It accepted 8034 mAh of charge. I haven’t
checked again since November 2021. However it still continues to last
many hours / multiple dog walks.

I always get a bit nervous over the summer months as it is left for a
number of months unused. Luckily living in Scotland I don’t need to wait
long until the weather gets cold. Did I mention before about the
horrible weather in Scotland?

How I look after the battery

• Always wait for the battery to return to room temperature before
  putting it on charge.




• Don’t leave the hand warmer for more than a few days at 100%
  charge.




• Try not to completely flatten the battery. If you do flatten the
  battery then charge it up soon afterwards.




• If storing it for a number of months then try to store it at
  approximately 50% charge.

Top view

Underneath

USB ports

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