my 3.7v batt is reading 4.2 (lite still red)

[sixofusernames]

i have a silver bullet (for 3 months now), and bought the 18650 batts from altsmoke. i had my battery on the charger alllll day, like over 10 hours waiting for the light to go green. i had my hubby test it with his voltmeter, and it read 4.2v and they are supposed to be 3.7, and the light is still red. 2 questions, does this mean my charger is busted, and 2, arent these batteries supposed to be protected against overcharging? are my batteries bad? I put them in the bullet, and they are working fine, should i get a new charger? do i need to be concerned about the 4.2 volts?

 

[KingVapor]

All 3.7v lithium charge up to 4.2v and actually stay around the 4v range for a while due to the large mAh. This is normal don't stress out.

Edit: Hmm 10 hours is too long of a charge it should only take 5 hours max from completely drained

 

[ejoker]

but if the charger continues to charge when the batt is 4.2, i'd replace it. could just be faulty switch at the led, but why take chances.

 

[mtb]

I just received my SB and BB from Alt smoke today, and got the batteries from them too. The 14500's charged right up in about 2-3 hrs. on the Trustfire charger. The 18650's were still charging - meaning the lights were still red - after five hours, so I pulled them off. Going to get an Ultrafire charger and see how that goes, but until it arrives, will just time the charging for five hours maximum after draining. Not sure if it's the charger, or the nature of the protection in the Ultrafire 18650's.

 

[Wolf]

I use the TrustFire multicharger (X2) daily with UltraFire batteries. I have only noticed a problem if the batteries aren't seated correctly. I've taken to putting them in and then rolling them to make sure they are all the way in and down.

 

[cddz]

I just received my SB and BB from Alt smoke today, and got the batteries from them too. The 14500's charged right up in about 2-3 hrs. on the Trustfire charger. The 18650's were still charging - meaning the lights were still red - after five hours, so I pulled them off. Going to get an Ultrafire charger and see how that goes, but until it arrives, will just time the charging for five hours maximum after draining. Not sure if it's the charger, or the nature of the protection in the Ultrafire 18650's.

The 18650 do take a long time to charge. 5 to 6 hours is very normal. What is the output mAh on the charger?

 

[cddz]

i have a silver bullet (for 3 months now), and bought the 18650 batts from altsmoke. i had my battery on the charger alllll day, like over 10 hours waiting for the light to go green. i had my hubby test it with his voltmeter, and it read 4.2v and they are supposed to be 3.7, and the light is still red. 2 questions, does this mean my charger is busted, and 2, arent these batteries supposed to be protected against overcharging? are my batteries bad? I put them in the bullet, and they are working fine, should i get a new charger? do i need to be concerned about the 4.2 volts?

If those batteries are 3 months old it is time to replace the batteries. I normally only get 2-3 months out of an 18650.

 

[sixofusernames]

thanks, but which should i replace first, the batteries or the charger, or both, jeez, i have already spent like 80 dollars this month.

 

[Wolf]

six, I don't know which you should replace first, but you can get two 18650 batteries and the TrustFire multi charger for less than $25.00 from Deal Extreme. Last time I bought from them shipping was free. It takes 7-10 days to get here.

 

[cddz]

thanks, but which should i replace first, the batteries or the charger, or both, jeez, i have already spent like 80 dollars this month.

The bateries, the lights are still red because current is passing through the battery, most likely in trickle mode.