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Question: I assume that this is a "smart charger" and that it goes into a trickle charge mode when the battery is fully charged.As you can tell, I'm new at this. I want to get a good charger as the 3400mAH batteries are not cheap. I have a Nitecore Intellicharger i2. Some batteries get hot.Thanks, Walt
Document: I splurged and bought the VP1 charger knowing that there were less expensive chargers out there to charge my 18650 batteries. I have charged a few batteries with it and found it to work great. It charged them relatively fast, about 6 hours from a very low state 3.53volts. I can see how a slower charger would be a pain since you don't want to leave them completely unattended or sitting on the charger fully charged for long periods of time, thus forcing you to be tied down longer.
Solid charger! I had tried to save money and buy some other cheaper chargers for my 18650 batteries. Well after one of those cheap chargers got hot and shorted out I realized I was making a big mistake. So I picked up the VP1 and couldn't be happier. This charges quick, doesn't get to warm, and I feel safe using it. The LCD screen makes it easy to see the voltage and charging status. The 18650 batteries aren't cheap, why use a cheap charger.
Very good battery charger. I really like that you can see the status of the battery being charged on the voltage display.
XTar was kind enough to provide me with one of their new 18650 (3400mAh) batteries for the review. Appreciate it. I found the battery does not really follow the standard size and found it quite a challenge to stick into my Fenix PD-32 without removing or damaging the sticker on the battery.
I have lots of flashlights that use the 18650 Li-ion batteries, and I just used the cheap chargers over the years that only show a red or green LED that represents charging or full. I have looked for a more modern charger that actually shows you the state of charge on the battery and allows you to select charging current...  Look no further, these may be expensive, but they are the best in my opinion, well worth the price.
Great charger thus far (using it a few weeks now). When battery safety is important for your application - this charger helps you ensure that batteries are never over-charged , or charged at a rate that exceeds their amp-limit. Highly recommended. Cheaper chargers often over-charge your batteries which is very unsafe. placing batteries that were charged with another charger into this one to check the charge, shows that they were being over-charged significantly by the other cheaper charger.
I purchased this battery charger mainly for the LED screen to tell me how long the batteries would take to charge. This charges my 18650 batteries from a 3.4v charge all the way to full within a couple of hours. I would leave the batteries charging on my old charger and they would usually take all night to charge. This also comes with a second power cord that allows you to plug into your car accessory port.
There is very little you can control or do, but then that is the attraction of this charger or chargers in this class. Dump your battery in here and it will get the job done for you, with as little fuss and as fast as possible. A battery size of 18650 would fit snugly or just right in this charger, thanks to the springs you will not need spacers.
Flash or show some kind of indication that a battery was wrongly inserted, now it just stays quiet but does not charge. The detection of full charge on batteries is very fast, in my test it took less than a minute to do it which is good. Somehow it took longer to detect full charge on my Eagletech battery : 3.7v 18650. I don't really know why is this.
I used (and still use) the Xtar WP2, but always found it to be not as capable or easy to use as my Pila charger. The VP1, however, adds a lot more functionality, making it my new favorite charger.The main advantage is the display screen. It clearly shows the real-time battery charge status.
Answer: Yes,  it does charge lipos the correct way.  It is a wonderful charger and I'm happy I spent the extra bucks. It's nice to know what you voltage is when you put the battery to charge. It's also pretty quick!