Test/review of Charger Xtar VP4 Plus Dragon

[Katherine Alicia]

The thing I noticed instantly was that the Opus cannot charge D cells, I can do 4 of them at once in my VP4, I use D cells a lot.
will it double up as a battery powered 5V USB charger as well?
Can you test internal resistance with it?

I`v had my VP4 for quite some time now and it`s used several times a day, it`s as good now as it was when new.

 

[CNR]

Thanks Katherine, D cells charging and 5V charger not important for me, OPUS tests IR and capacity as well, so the only difference i'm not sure how important it is, is the pulse charging which i don't really know if it will cause me problems in cell life and/or smaller cells by tripping their protection.

 

[NiOOH]

The XTAR has a better IR measuring circuit that compensates for the conductor resistance (but not for the contact resistance). Also, constant current is preferable vs pulse, IMO. Dragon is well built and calibrated.
All in all, if you don't want to spend the cash for MC3000, the Dragon is the better option, in my view.