Most smart chargers do not seem to be recommended for extremely discharged (zero volt) type Li-ion protected batteries.
These batteries can potentially cause a fire or explosion.
What precautions do you recommend?
Load power?
Charge time?
Loading time?
Other?
I once had a battery over-discharged and it shows 1.5V on Multimeter. But my smart charger was able to charge it without much trouble. I guess it is really smart to monitor any dangerous current.
Just make sure you are around during the charging process.
What do you mean by dangerous current?
What can be the symptoms?
Smart chargers always monitor the current during charging. So it should be able to shut the charging process to avoid overheating or fire.
Hi. This subject interests me a lot. Allow me to interfere.
Could you tell me what is a "Smart charger". Could you give a link where to buy a good 18650 charger ?
Thank you.
I bought this one, works well. LCD Display Speedy Universal... https://www.amazon.com/dp/B07428G1G2?ref=ppx_pop_mob_ap_share
@Rongzhong Li Thanks for the recommendation. I purchased Zanflare charger you recommended above. I put four batteries in at once and the batteries got very hot. Then realized the batteries that I bought (see below) were Li-SLCO2 and those are apparently NOT rechargeable and not Li-ions. Good thing I didn't burn the house down :) Leaving this post here in case there are any other newbies that might make the bonehead mistake I just made. Hope the Shenzhen MakerFaire goes well for you!
@John Gallaugher I've never tried this kind of battery. So far Li-ion and Li-Poly seems good for the cat. Thanks for the note.
The Maker Faire went well. I've been super busy since then and didn't notice that the forum stopped pushing comments to my phone. Sorry for delayed response.
Thank you very much for your answer.
And what about the 18650 batteries ? There are so many.
Which ones do you recommend?
Most of them should work. The capacity should be within 3500mAh.
Ok, but they are so many fakes !
Do you any link for good ones ?
I would filter by review scores