LEZYNE 700XL Light advice

[night cycler]

I bought this £40 cycle lamp brand new at the time.
A very nice lamp,but I only used it on cycle paths that were unlit. Less than 6 times.

The next 3 years it Sat in my kitchen.
I have tried to charge it yesterday but nothing happened. None of my charges/cables for it don't charge it.
So can anyone suggest what the issue is

 

[Sharky]

A Google search gave this advice ...

Revive a dead battery: If the battery drained completely during long-term storage, it may take up to 15–30 minutes of being plugged in before any charging indicator light turns on.

Good luck

 

[C R]

It is tricky. LiIon batteries can degrade over time if the minimum charge is not maintained. Some BMSs may refuse to charge if the cells have over discharged, as a safety feature. As @Sharky says, leave the light plugged in for some time with a known working cable to see if it comes back to life.

 

[BigAndyH]

Worth checking - I had a Lezyne rear light where the charging port was in a recess, protected by a rubber cover. The Lezyne supplied charging cable would just fit into the recess, but on other cables the moulded end was a bit too big, so they could not quite be inserted far enough to charge the light up.

 

[rogerzilla]

Try putting it in the freezer for a day. Defrost it in the fridge for a few hours to reduce the risk of condensation, then try charging it. Li-ion batteries are often revived for a while by freezing.

 

[nogoodnamesleft]

I had similar with my Lezyne Macro. I have both front and rear versions and the rear (smaller) was fine but the front takes hours to charge but then does seem to work OK (lasts more than long enough for my rides). Still use it on my upright but got the 700XL (and strip for rear) for my tadpole recumbent but that gets used more so not suffered.

 

[Webbo2]

I had Lezyne front light that get used then wouldn’t charge. It would indicate it was charging but that’s are far it got. Binned it in the end.

 

[oxoman]

Unfortunately its the downside to lithium batteries if there left dead for to long. There's a chance the freeze thaw cycle might work, however im always wary as ive seen to many lithium batteries go up in flames. TBH they tend to be smaller cordless tool or embedded ones in electrical equipment. That's why when you leave them for a while your supposed to leave them pretty well fully charged unlike nicads. It's possible that if you can get the light apart that you can replace the cell itself, especially as the bigger lights tend to use standard 18650 laptop style cells. When im suggesting you take the light apart, this is if its got actual screws to disassemble unlike some glue or crimped lights. DO NOT go prodding the old cell or shorting it out and preferably dont do the work in the house. Yes people do try that and regret it pretty quickly.