Do these batteries have built in over-current/over-voltage protection components? Can they be used with "dumb" chargers?
751101
I don't know but I use either my ipod or LG cell phone charger with mine and even though I've left them plugged in after they were fully charged I haven't had a problem. I just don't know how long they were left after they were fully charged.
1886905
Yes. Just put em' in and leave them. These chargers go into "Energy Save Mode" when the battery is charged, preventing damage to the cells. They come back on only to "trickle charge" when necessary.
233337
No it is not a smart charger. It will not overcharge your battery enough to destroy/damage it.
2091607
No!! They are not bad! Many(most) chargers when a battery is discharged to 0.00 volts will read either no battery or a bad cell. What I do with my la crosse charger is I put a battery that will charge next to one that says nil and jumper the positive sides with a paper clip for a second or two to start charging. You may need to do an additional charge cycle because it incorrectly calculates the charge time due to the jump start. Don't throw them out or feel free to send them to me they are fine. I haven't lost one (tossed a few aaa, bad move) since I learned this trick over a year ago.
2111066
You will not overcharge if using the Digital charger supplied with the product, It automatically Stops charging. Also Ultrafire's 18650 batteries have built-in protection. They are quite good and hold up pretty well to abuse
1178271
It's a cell not a circuit. I use only Li-ion and Li-Polymer 9 volts on about 20 projects that continue to run to discharge with no problems; a smart charger exclusively for these batteries has the circuit that has yet to fail to charge any of these 'over-discharged' batteries. Most electronics stop working at a certain voltage long before the battery is totally discharged. Still, even with current-hungry circuits, none of the 40+ various lithium 9 volts I use for the last year and a half have failed with constant charge/discharge.Can't say the same for NiMH.
2156264
No. I tried the same thing. But there is circuitry to prevent overcharging which would damage your batteries that is missing in the circuit.
1794439
Yes, but they can be slightly discharged. It's best to charge them when they arrive. You won't do any harm because the charger is smart (unlike the old-school chargers, "dumb chargers," that used timed charging methods).
1263777
I don't know where you got this info, but the high capacity chargers for both devices are rated at 5VDC, 2.1A. So NO. And, if you charge at a faster rate the battery will fry!
1365910
Are these batteries UL listed? I've heard some horror stories about generic laptop batteries melting and/or exploding....
840617
They do appear to be the new version (3.7). At first the connections seemed good on my charger for my V911. The removal of the batt from said charger however did not go so well. Still had one batt literally come apart in my hand (?) Buy em, but expect to lose at least one and don't use an old version charger. Good luck
1151345
I believe they are. They are roughly the size and weight of an automotive battery, long-lasting and don't mind living on the charger between uses (left mine there over the winter, works fine).
1974277
Yes, Internal over-charge and over-discharge protection to prevent battery over use.
48322
Yes, that is what I bought these batteries for. They are both still working great, nice to have 2 batteries - always have a spare. Would recommend getting a separate charger also.
2021116
I have been about to use these battery with a several aftermarket USB chargers without any problems.
1943352
Bc these are slow chargers so they dont fry your battery. I use mine for phone only and have no problems.
1619616
What is not in the description is that these batteries are protected. In my vape I can't use them since I run sub ohm coils. And the batteries don't fit in my itaste vrt. To tall with the button top. The charger works perfect and the batteries last a long time when I use an atomizer that has a 1.2ohm or higher coil.