Hi folks.
I'm not sure if this is the best forum.
I have here Marshall Major II BT headphones
When I plug them in for charging, the charging indicator led lights up as charging but the battery is not charged. It just stays on forever and no voltage is passed to the battery itself.
When I charge the battery externally it works just fine until it discharges.
I cannot find any info on this issue online.
Is it just a faulty charging IC or have I any hope?
I was trying to find something online but had no luck with this issue. Just dead batteries replacement info.
After 5 years (based on reviews being from 2017), it’s very likely the battery
is bad. What’s possible is that while the external charger doesn’t know anything about the battery parameters and thus charges it “blindly”, the internal charger has been programmed with the battery’s parameters, and is detecting that a parameter is out of limits and won’t charge it. (In particular, the low voltage cutout.)
Given that 5 years, presumably being used during that time, is a perfectly normal lifespan for a lipo battery (in fact, even for an unused one, 5 years is often enough to have it fail), I’d first try a new battery, since they don’t cost too much.
charger only fulfills V, not I, of the requiring charged device
it's mostly due to capacitors (caps) fault, mostly the first and last capacitor
which it's mostly due to the capacitors age yieding high resistance / ESR in turn reducing the I
but else components fault is likely too the next
just meter all those to prove
On 5 year old headphones? Nah, extremely unlikely.
I wish people would stop assuming failed caps are
always the answer. They aren’t, especially not on equipment that isn’t very old.
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