I have charged unprotected cells - and they come out the same as protected ones , 4.19v to 4.21v
I signed up for a new account through this link. I hope you get the points.
Oops, sorry I missed your review Matt! It's now frontpage'd and sticky'd.
Ordered this charger, receiving it in a week or 2 i hope :)
my xtar 2600's are now 8 hours charging and still it doesn't say fully charged, i'm getting afraid that i have a bad charger :s, can't measure batteries as i don't have a meter. Will ask a neighbour if i see him.
Take it easy, it is a very slow charger and your batteries might end up above 4.2 volt.
Seems about right my Ultrafire grey 2500mAh take 6Hrs to charge on my Ultrafire wf139.
I'll have some more patience then just thought 2600mah/500mah = around 5 hours, but i was told good batteries also charge slower... So i will see :)
The WF139 is fast compared to TR003P4
If the charger does use a CC/CV algorithm a good estimate is to add 50% to the calculated value. The CV phase slows things down.
The TR003P4 does not exactly charge with 500 mA, 150 to 200 mA would be more correct. If the batteries are empty it will take more than 12 hours to charge.
ow that's a lot slower than expected, but as long as it's a good charger i can get over that!
First battery is charged after 9 hours, put it in my KD C8 and wOWOWOWOwowowooot!
The light i owned before seems to put out 75 lumen max if i compare to the low of this light, just sick ... and then i still have a NW dry coming up :o
Thats very nice of you Chicago. Have you ordered anything from manafont yet? I just opened a new account through the same link and it didnt indicate that the referral was successful.
Trustfire TR003p4 15.19 usd (13.67 usd with coupon "DINOGIFTCARD") in Dinodirect http://www.dinodirect.com/li-ion-battery-fast-chargers-multifunctionl-cylindrical.html
Does anyone with this charger feel the battery in slot #1 is warmer than slot #2 and so on? Not that the heat is really noticeable just slightly warmer down the line. I am currently recharging Samsung ICR18650-22E recovered from an old laptop cell. So who knows the battery state, but I just think it's a little weird that the slot #1 battery is heated a bit and the slot #4 battery is cool as a cucumber. (All reading the same charged voltage btw)
Price went up to $17.99
Lost my manafont virginity and used your referral code :)
Ive been using my Trustfire TR003P4 Charger for the last few months. Unfortunately, the batteries come of the charger between 4.21 and 4.23 volts (measured one hour after charging).
Does anyone know which components I might be able to swap to lower the maximum charging voltage? I really like the design of the charger but dont want to shorten the life of my batteries.
Soshine and Xtar can do 1A , but even they tapper off and the chargers are really not that much faster ..
If the cell is depleted enough , its going to take a while ,
Using my TR001 , I charged up my brothers 18650's , and it took about 10 Hours [ he really drained them ]
4.25 is about the accepted , dont get you knickers in a knot , voltage .. [ when charging ]
It just depends on the charger behaviour ...
Is it taking good cells to 4.23v - How much do they sag after charging [ Give it at least an hour ]
If its taking bad cells to 4.23v and say they sag to 4.15 after an hours rest , then your probably shortening the life of the batteries ..
If you charge to 4.23v and they sag to 4.21v , well , its not the end of the world .
I find the cells that overcharge , are usually the good ones [ lower internal resistance ] , but thats my chargers ...
Battery behaviour is interesting to say the least ...
Ive found that with this charger and older cells, it never reaches a high enough voltage for the charge light to go from green to red... its always charging and never terminates. Is this dangerous? Probably not, but it might be if the battery developed an internal short from the sustained abuse. With cheap chinese batteries, Id never risk charging unattended. That goes for all lithium rechargeables. Also, cell life can nearly be doubled if batteries in good condition are only charged to 4.15V, which is the case for most laptop batteries (by far the primary use of 18650's worldwide).
Id really like to see this charger terminate between 4.15 and 4.18V. Hopefully someone will figure out how to mod it. Old, any ideas? As it is now, its just another cheap charger that got buried in my junk bin.