Failed before 1st batteries were discharged ...
344676
Product makes raspy noise (like gears clashing) so scares our cat and got very little usage. At present time, product only rotates one way (when it moves at all) and 1st set of batteries still charged up. I do not know how they got that cat on TV to play with it.
3390814
Despite previous bad reviews, i wanted to trust the brand.  I loaded brand new batteries, and the speakers worked great...for five minutes. Then one speaker or the other wouldn't work at all.  I reset the speakers multiple times, tried new batteries, tried different locations, and nothing worked. I ended up returning for a refund.
3416339
It was pretty much DOA.  I did manage to test two or three batteries before it quit working.  I liked the idea of having an easy to use battery tester with an actual LCD display, instead of one of the ones with a needle.  Unfortunately, this wasn't the one.  I ended up getting as $12 multimeter that I can use to test batteries.
194827
Batteries may have been old. Shorter live than ones purchased @ local stores.
2397008
Mine died after a dew months. One day the LED flickered a bit, then went out. Tried new batteries, tested the old batteries with multimeter - batteries are fine. Took the flashlight apart, no visible corrosion or dirt. Switch mechanism feels OK. Just a failed LED, I guess. It worked fine for a few months, but now I have to replace it. Disappointed.
4382833
Ordered a set of 5.
1 battery was dead.
All batteries were loose and required tightening the 2 small prongs inside.
All shut off on the first bounce.
There for, these lights are pretty useless as a dog collar safety light, as the dog running, jumping and walking causes the lights to shut off on the 1st bounce.
638373
Really wanted these to work. I charged up my batteries on Tuesday, May 23rd for use on Wednesday the 24th. They appeared to be charged up when I removed each one from the charger but they were not. One was at 50 and the other wasn't even that. Quite disappointed as I had a shoot to do on Friday and not having extra batteries really can complicate matters. **Update Again**
Spoke with company rep who apologized and immediately sent out replacement batteries that seem to be working well! It's nice to see a seller who cares about Customer Satisfaction!!!
1586255
I'll write my final review when I get new batteries. t doesn't work now, but maybe the new batteries I am ordering will change that. All I know is that it doesn't now no matter how the batteries are placed in it. Why can't they check these things before  they'e shipped?
2223178
i've tested the batteries and solar chargers separately and both seemed to work but 2nd night into the test: one battery failed, evidently too long in the warehouse? it's too bad cuz i would have easily given this product 5 stars, the manufacturer needs to pay more attn to the longevity of the Ni-Cd batteries they ship with the lights, fix this problem and u get 5 stars! ..this is my 1st time editing a product review. i had to replace 2 out-of 2 bad rechargeable batteries, each replacement battery was about the cost of each lamp, include the charger and those cost more than the lamps (14+10=24>15), on top of that - the weather-seal around the solar panel had a gap which over time would destroy the electronics in the units, i wanted to use silicone but only found a porcelain sealer which as with the silicone - takes 24 hours to dry, so make sure if you repair 'in the field' (outside) - you allocate a drying period for whatever weather sealer you might employ, this product deserves two stars.
2435113
Unit failed within 30 seconds of initial use.  I used an Armacost transformer too.
34506
Worked for one dive. There are no markings for whether the battery is positive or negative. The battery itself is worse than dog crap. Once I get it working, I will sell this ASAP. Bought myself a UK Kinetics 77 lumen light and will just get a Princeton Tech primary. This light is great when it works... That said, I'll stick with more reliable offerings.
3319871
One battery worked and the other one did not work at all. Device would not even recognize it. More trouble than it was worth to return it thereby correcting the problem.  If I were you reading these reviews I would be prepared to only have one out of two batteries work. These things should all be tested before being shipped or before leaving the factory.
2536738
the temperature dropped and my battery died this morning so I decided to use this fully charged unit.  Nothing. I followed the instructions to the best of my knowledge but it did not make any difference whatsoever. This is the first and only time I needed it and it failed. Too bad its been several months since purchase otherwise I would return it.
2570037
Xbox 360 Rechargeable Battery 2-Pack failed only after a year of use.  I am going back to AA batteries thank you. Xbox 360 Rechargeable Battery 2-Pack
1974232
Batteries are swelling after first charge. Could be a bad batch.
1103422
Purchased on March 4th 2016. Failed after first time exposed to water. Did replace batteries before asking for help. Here is the response from the manufacture.

Hi Dale,
  Please change the batteries, we find in most cases that that is the problem. Unfortunately, We have no way of confirming with Amazon that the product hasn't already been credited. All defective product is credited or replaced through Amazon. You are also beyond any warranty. Hopefully the batteries will resolve the issue.
Sincerely,

Lynn Franey
1097287
With batteries fully charged and correctly plugged into gloves the switch failed to work (both gloves). No switch light. No glove heat.
Spent hours recharging and re-plugging, switch's never worked.