Does this battery have protection circuit to limit overcharge and overdischarge" A: The answer is yes, these are protected cells. I received and tested the batteries. Writing on the label says the IC for protection against short circuit, overcharge,...
858896
There doesn't appear to be any protection built into these batteries. I took a voltage measurement while I had these sitting out of circuit and they had just over 4 volts several days after I gave them a little time in the charger.
1974277
Yes, Internal over-charge and over-discharge protection to prevent battery over use.
1044913
Protected means that the charger is "smart" and will not overcharge your battery. It also will not "short" if you accidentally insert the battery backwards. The charger charges specifically to optimize battery performance
540669
Hi Emerson, No, I haven't had that happen to me yet and I left it on there for 2 days. I forget it's on there. So, In my opinion, It will not overcharge the battery.
1638106
There is a cutoff and I believe that the unit automatically dissipates the charge slightly if the batteries are left in the unit beyond the charge up time.The marketing blurb states " Automatically protects against overcharge and short circuit." The only danger I remember is in leaving the unit on with no batteries in it at all.
1552883
These UltraFire 18350s are definitely not protected. Your device is not in any jeopardy from unprotected cells, the protection is against discharging the battery too deeply and killing it.
943268
No, you can not over charge the battery. It does not have a charge controller but it has a voltage regulator that prevents overcharging (additionally, it keeps power from the alternator from reaching the panel). I have had mine plugged in for 7 months straight and can even drive with it connected with no problems.
1023411
No this is a sealed non-acid battery. .. you can charge w regular charger but DON'T OVER CHARGE IT...it states the charge in the paper work.. I left it on my charger a half hour or so n it was just a touch over max charge allowed. ..
1609662
Most LiIon batteries only come partially charged and need to be fully charged once you take delivery. There is a partial charge that is part of the manufacture of the batteries, but the cells are not fully charged as a safety measure. Batteries that have a full charge can be hazardous if damaged in shipping. There is a lot of energy stored in a small space. A short circuit or crushing the cells can cause fire.
1474642
Yes, it has internal over-discharge protection provided by an internal charge circuit PCB. The same PCB that regulates the heat, light and charging.
684118
I don't know about the overcharge issue as I have been charging mine by my chair as I'm watching TV. When all four lights quit blinking its done. I left my charger outside for most of the day, and it seemed to hardly charge at all. Don't count on it for a quick charge solution
1331675
With any electronic device you can't over charge it. You have to do what's called cycling the battery. Charge to a hundred then run down to 15 or 10 percent. Over charging the lithium ion could damage or even destroy the powercell. I use the same product and it lasts me all day and some times into the next
1419808
I do not recall any 'protected' claim for this rechargeable, so suspect it is NOT... also, I found this website with additional information: http://www.lighthound.com/Rechargeable-Lithium-Battery-Information--Protected-vs-Unprotected-Li-Ion-Batteries--Lithium-Ion-Battery_ep_36-1.html
2015037
The only time I have known the "t" terminal to be used is at a service center to reset the overcurrent circuit. A 'tripped' battery acts like it does not want to take a charge. I've had this with specialty cells used in modern digital cameras and nearly t-canned a $50 battery until the [honest] clerk at the shop offered to reset the battery. He popped it in his jig, hit a few buttons and handed it back to me in working order.Best o' luck on your ballooning adventures!
1733671
The description states that the cells are made in Japan is all. If this is true then they should be quality cells. Also lithium batteries last nearly forever if they are stored at about 40% of charge. It is the number charge/discharge cycles which slowly shorten it's life. Also don't believe the mah rating. After market manufacturers simply lie about a battery's capacity because who is going to pay to do the testing and hire the lawyers to challenge them. If a lithium battery is about the same size, weight and price it is about the same capacity.
342992
A PCB is a circuit board built into the head of the battery that protects it from overcharging, overheating, short circuits, and also prevents the battery from being overdrained by your device (flashlight). A lithium ion battery can be ruined if it is charged over about 4.20 volts. Or if it is drained below about 2.75 volts. The PCB acts as a "circuit breaker" and shuts off any current from flowing into or out of the battery before it can be damaged. Even though they are more expensive, it's money well spent in the long run. A non protected battery can easily be run down below the point of no return. I hope this answered your question sufficiently.
382551
No it does not, BUT i've had it for about 3-4 years now and have never had a battery over charge. ALSO one key factor when wanting to run a dual battery setup is to start off with 2 new batteries that are the same make and model and pre-charge them before putting them on a vehicle.