Ultrafire 18650 Questions

TuhOz · Oct 12, 2011

Sup LPF

I received my 1st high powered laser, "cheapish" 200mW green with 18650 and 16340 batteries + charger.

1. How long do I need to charge these batteries?
2. When I can charge them again, I mean, should the batteries be empty when I start charging them?

Thanks

Ps. I will do a review soon of my laser..

weeba2kv · Oct 12, 2011

Re: Ultrafire 18650 problems

1:about 5 hours for the 18650 but the charger will shut down by itself.
2:when the batt is empty charge them again yes for a better / longer life time.
3:no idea

TuhOz · Oct 12, 2011

Re: Ultrafire 18650 problems

weeba2kv said:
1:about 5 hours for the 18650 but the charger will shut down by itself.
2:when the batt is empty charge them again yes for a better / longer life time.
3:no idea

Alright, thanks.

I have charged my 18650 now ~2h and the charger says its full..
:wtf:

weeba2kv · Oct 12, 2011

My charger is a cheap 1 takes about 5 hours (18650 )

TuhOz · Oct 12, 2011

Yeah, mine too, the charger is just like this
Charger CR123A 18650 16340 14500 10440 Recharge Battery | eBay

This was really cheap laser, and I think the charger/batteries are rubbish.
It charged my 16340 in 1 hour

Obscurus · Oct 12, 2011

Re: Ultrafire 18650 problems

TuhOz said:
Alright, thanks.

I have charged my 18650 now ~2h and the charger says its full..
:wtf:

Indeed! Blue unprotected 18650 by ultrafire is total crap! It charges in a couple of hours and gives an amazingly low runtime. I tried the black trustfire and I am much more pleased. For a cheap cell I recommend it.

TuhOz · Oct 13, 2011

Re: Ultrafire 18650 problems

Obscurus said:
Indeed! Blue unprotected 18650 by ultrafire is total crap! It charges in a couple of hours and gives an amazingly low runtime. I tried the black trustfire and I am much more pleased. For a cheap cell I recommend it.

I have excatly that blue one...
I will buy better 18650 soon.

Do you know how the temperature effects to the output?

LarryDFW · Oct 15, 2011

Re: Ultrafire 18650 problems

TuhOz said:
I have exactly that blue one...
I will buy better 18650 soon.

Do you know how the temperature effects to the output?

Low temps reduce the output of all the rechargables we use.

In use, lithium ions will heat up from internal resistance,

restoring a portion of the capacity.

LarryDFW

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