![]() ![]() ![]() What the heck? Battery might have been failed/dead completely at that point (0 charge due to short I created?). Tried to connect charger after that, no lights, no charge. Accidentally poked battery releasing a very small spark. Disassembled to find the lipo battery inside it. Will not charge - Details: Battery was definitely almost at end of life. Bose QC35 bluetooth noise cancelling headphones - $350 - Failed after 1.5 years.Motorola HT820 stereo bluetooth headphones - probably different hardware revision - Failed in same fashion after about 1 year.Lights up on connecting charger but will not charge or power on after being on charger. Motorola HT820 stereo bluetooth headphones - model 1 failed after about 2 years.I have heard of AC power supplies having lower-rating capacitors or something that will decrease component life and cause earlier failure. General question for those who have worked in the consumer electronics industry:Īre small rechargeable devices (like bluetooth audio devices specifically) designed to fail after a set time to force customer replacement? Is there for instance a mechanism that disables charging once the battery has totally failed or after a certain length of time?
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