This is why I recommend buying batteries and chargers from US, the .25A charge rate is best for the batteries long service life. I wouldn't leave your batteries on the charger for long periods of time at the .5A rating, US knows their stuff because they have most likely tried out many different brand of chargers, batteries and found out what works best. If you have thought about it, it's likely US has already been there and done that and if there was a better battery.chargeer out there they would most likely know about it before us. Example, the recent change from Trustfire brand to XTAR brand lithium batteries.
I did order the VP1 from US, but presumably due to stock issues, they sent me the VC2. Thanks, good to know. I'm good about leaving my phone charging so this shouldn't be a problem.