Replies to This Discussion

StudentPermalink Reply by Tilly Whirls on April 30, 2012 at 9:09pm

Thanks so much for bringing this to our attention Martika! 

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ModPermalink Reply by Martika* of MartikasMysticDesign on May 1, 2012 at 1:51pm

It's mainly a issue with TrustFire brand batteries used by moodhoops. They are super cheap batteries but are the one of the highest quality for being cheapest lithium ion battery on the market. They are known to have good and bad batch of batteries. Some will last 6+ months with no problem, others will last only a few months and could possible catch fire and/or stop working like mine did.

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StudentPermalink Reply by Alice on May 2, 2012 at 2:33am

Is there a brand of batteries similar to TrustFire that isn't so cheaply made but will still power my moodhoops properly?

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ModPermalink Reply by Martika* of MartikasMysticDesign on May 2, 2012 at 6:40am

I'm still researching & shopping around for the best battery to replace my busted ones. So far I've found lots of batteries with the same voltage but it's hard to find the right size battery since foreign countries (where you get the cheap batteries) have different measurements or they don't put the size of the battery. I am seeing lots of trustfire batteries on ebay for good price though.

http://www.ebay.com/sch/i.html?_sacat=0&_from=R40&_nkw=1450...

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Permalink Reply by DrFeelGood on May 1, 2012 at 7:47pm

Was your hoop in use when this happened?  Either re-charging or lit up?

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ModPermalink Reply by Martika* of MartikasMysticDesign on May 1, 2012 at 8:21pm

no the battery was not even in my hoop when it happened, it was sitting in a cool area in my room. I had used that battery the night before and it worked fine.

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StudentPermalink Reply by Jessica on May 2, 2012 at 10:47am

really?! wow, that's nerve-wracking. I have a ton of trustfire brand batteries for my moodhoops. 

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ModPermalink Reply by Martika* of MartikasMysticDesign on May 2, 2012 at 1:12pm

Keep in mind not all trustfire batteries are going to go up in smoke. They have good and bad batteries but because of how we hoopers use them it puts more stress on the battery (dropping your hoop/battery, charging, regular use etc.) It runs the batteries life done and they are already super cheap batteries. I would mainly be worry of old batteries about 5-8 months of use that could be prone to this.

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Permalink Reply by Laura Douglas on May 2, 2012 at 10:38am

my lithium ion battery exploded in my hoop! it happened because i put my battery in backwards when i wasnt using the lights, thanks for making a post about this and im glad i know why it happened!

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StudentPermalink Reply by Hyperbola Hoops on May 2, 2012 at 12:27pm

Many circuits have this weakness: if you attach the power source backwards it will fry the circuit - in your case, the battery.  If the hoop still works with a different battery, you are very lucky!

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StudentPermalink Reply by Hyperbola Hoops on May 2, 2012 at 12:25pm

Thanks Martika!  I agree: it sounds like a good batch/bad batch thing, but it's certainly something to look out for!  We have had good results with Tenergy batteries, and they also make a LiFePo4 (Lithium Iron Phosphate) type of battery, which is supposed to be a more stable mix.  I'm not sure what size or voltage you are looking for, but you might look into it.

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Permalink Reply by Bearclaw Manufacturing - Tedward on May 2, 2012 at 12:43pm

When Apple introduced LI batteries in laptops, they had a similar issue, but cleared it up pretty quick.  Now most laptops use LI batteries, as do almost all cell phones.  So, I'm betting if you see an issue nowadays, it's probably either from damage or cheap construction.

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