TrustFire Multi-Function Li-Ion Battery Charger - TR003P4 (110-240V/DC12V)
Its been a while since there has been a new charger from Trustfire , I wont dare mention who may have lit a fire under them.
So seeing the new charger a while ago , I decided to drop some coin on it rather than driving my car [ fair exchange ] , since I already had enough chargers I needed to be able to justify buying another , and after giving the charger some what of a shake down , I have to say its a fairly good charger for the money . Lets get on some details first :
With a 18650 @ 3.16v the 4 bays returned - 0.63A - 0.65A - 0.67A - 0.67A
18650 @ 3.52v the 4 bays returned - 0.55A - 0.53A - 0.53A - 0.56A
18650 @ 3.67v the charger varied from 200-360mA
18650 @ 3.93v the charger varied from 140-160mA
18650 @ 3.97v the charger varied from 120 - 150mA
18650 @ 4.07v the charger varied from 83-99mA and with another cell 97-112mA
18650 @ 4.12v the charger varied from 70-82mA
18650 @ 4.19v the charger varied from 25-75mA
Now with 2 batteries in place - I tested several combinations of bays ...
The charge rate went from 0.67 or so Amp to 0.51A there was little variation after that when you added more cells ..
Termination seems to be around the 4.19v range to 4.21v [ so far ]
The charger behaves much like the WF-139 or WF-188 , in the sense that it seems to check battery state about once every second [ what my MM can detect ] , it does appear to sort of terminate charging , and what I mean by that , it does not actually turn off the charging channel but rather goes into a monitoring / stand by state [ around 2 to 3mA ] and if another cell is charging it may check battery state kicking current up to 20 to 40mA as it does so , again very much dependent on my MM [ How accurate it is ] .
Now what I like about this charger = It will start charging from 4.19v . And so far has terminated from 4.19v to 4.21v , it has a decent starting charge rate [ current ] but looks to ease off in a almost linear fashion rather than at certain voltage levels , this makes the charger some what slow as the charge rate has eased of quite a bit before the battery even gets to 4 volts , but the upside of this is that the charger would be very gentle on the 18650 and quite possibly help in putting in as much charge as one possibly could [ Hmmm gives me an idea for an experiment ] , anyhow .
So by now your probably wondering what batteries the charger will handle ...
18700 fit with room to spare , should be no issues here ..
16340 , I put in the shortest ones I had , and again there should be no issues here ..
I have to say the charger looks to be well made , the lid looks to be well made , as well as being attached firmly .
The sliding tabs in each bay move with no binding , and also appear to be well made [ Ive had a tab bend and break before ] , should be no problems in this regard ..
Each charge channel does appear to be independent , I saw no evidence to show otherwise .
And this is the first charger with a open voltage of 0 volts , yeah even with a battery in one channel the others read 0 volts ...
Voltage input range is 110 to 240v and there is a 12v DC input [ 2A ] , if you have a 12v sig adapter .
I like this charger , and I will use it as much as possible to see if it does something strange , so far so good , and from the testing so far , I would recommend this charger [ based on my sample ] .