Good info. I was mentioning the cost comparison between 'chargers' of V2 and V4L only, not batteries or from other companies. I'm sure there are better deals from lots of places. I have 17 batts & PT from all over, mostly V4L, , but when I first started I got a kit from V2 that came with a charger. Then I ordered the car charger from V2 which is $4.95, but I think is $8.95 or $9.95 at V4L, same input output, etc. Just saying the chargers from V2 work with the V4L batts and PT fine, least they have for me for the past 3 months, although I like my V4L batts the best.