<h2 id="background">Background</h2>
<p>Ken suggested at Oggcamp to do a long term product review of my hand
warmer.</p>
<h2 id="product-information">Product information</h2>
<ul>
<li><p>The model: OCOOPA 10,000 mAh capacity</p></li>
<li><p>Purchase date: December 2020</p></li>
<li><p>Cost: &#xA3;25</p></li>
<li><p>Description: It has a single button used to turn it on and to
adjust the heat level.</p></li>
<li><p>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.</p></li>
</ul>
<h2 id="links-to-product">Links to product</h2>
<p><a
href="https://www.ocoopa.com/collections/haloseries/products/ocoopa-h01-pd-pro-ip45-waterproof-and-dustproof-crack-resistant-quick-charge-rechargeable-10000mah-hand-warmer-camouflageURL">Fast
charge model from Ocoopa. My model charges slower which might be gentler
on the battery. Actually the real reason I bought the slow charge model
was it was cheaper</a></p>
<p><a
href="https://www.amazon.co.uk/OCOOPA-Rechargeable-10000mAh-Electric-Football/dp/B08DJ5B94G/ref=sr_1_6?adgrpid=167779637264&amp;dib=eyJ2IjoiMSJ9.QM55EuwGjjhaAqG8UCo0gHIg7rCC4CwcuX0qwHsUUjkbdzbru59Z9AL4YIntGsFoIbNvDNB_0H8a-fug6yKE-QKKrWcdcm6OW3wx8wBYP6k.io66ORkn2FdDSBhawpQaW-lvDy053_l0TBgKSeTC7IU&amp;dib_tag=se&amp;gad_source=1&amp;hvadid=696399789733&amp;hvdev=c&amp;hvexpln=69&amp;hvlocphy=9189955&amp;hvnetw=g&amp;hvocijid=4686875213813031010--&amp;hvqmt=e&amp;hvrand=4686875213813031010&amp;hvtargid=kwd-985528522290&amp;hydadcr=18117_2287657&amp;keywords=ocoopa%2B10000mah&amp;nsdOptOutParam=true&amp;qid=1730557505&amp;sr=8-6&amp;th=1">Amazon
seem to sell the model I have and amazingly it&#x2019;s still &#xA3;25!</a></p>
<h2 id="story">Story</h2>
<p>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</p>
<p>I do lots of dog walking and suffer from cold hands.</p>
<p>I've had different hand warmers over the years:</p>
<ul>
<li>Ones that you boil in water. Don&#x2019;t last long</li>
<li>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.</li>
<li>Zippo hand warmer works well but is a faff to setup and sometimes
goes out.</li>
</ul>
<p>This electric hand warmer is by far the best solution I've found.</p>
<p>It saved me twice during OggCamp as I used it on two occasions to top
up my phone. When arriving and leaving OggCamp.</p>
<p>This was the first time I&#x2019;d used the hand warmer to charge anything.
I was very glad it worked.</p>
<p>At the time of purchase I was rather sceptical about the whole idea
of electric hand warmers.</p>
<p>The batteries are not used in ideal conditions. They get very hot and
when in use a lot of current is drawn from them.</p>
<p>My Hand warmer is now almost 4 years old and is still going strong
with no noticeable degradation in capacity.</p>
<p>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&#x2019;t
checked again since November 2021. However it still continues to last
many hours / multiple dog walks.</p>
<p>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&#x2019;t need to wait
long until the weather gets cold. Did I mention before about the
horrible weather in Scotland?</p>
<h2 id="how-i-look-after-the-battery">How I look after the battery</h2>
<ul>
<li><p>Always wait for the battery to return to room temperature before
putting it on charge.</p></li>
<li><p>Don&#x2019;t leave the hand warmer for more than a few days at 100%
charge.</p></li>
<li><p>Try not to completely flatten the battery. If you do flatten the
battery then charge it up soon afterwards.</p></li>
<li><p>If storing it for a number of months then try to store it at
approximately 50% charge.</p></li>
</ul>
<p><em>Top view</em><br />
<img src="hpr4243_1.JPG" alt="Top view" /></p>
<p><em>Underneath</em><br />
<img src="hpr4243_2.JPG" alt="Underneath" /></p>
<p><em>USB ports</em><br />
<img src="hpr4243_3.JPG" alt="USB ports" /></p>
