Just got a KWA SR7. Came with cheapo charger. Can anyone recommend a good smart charger? Also I was told I have to charge precisely 4 hours. after that when battery is completely drained charge precisely 2 hours. Then what?
What you just said about charge time makes absolutely no sense. Take a look at your charger and battery. Look at the batteries capacity (mAH) and the chargers charge rate (A or mA). If the charge rate was rated in A multiply by the charge rate by 1000 to get mAH. Divide the the batteries capacity by the charge rate. The result is how long it will take to charge a dead battery in hours. If it's half full, charge for half the time.
For a smart charger most guys are running some variant of the B6AC. There are better chargers out there but this is a good value charger and short of charging multiple batteries it does everything most people would need.
Edit: ahhh now I know what the person was thinking when they told you that...
They were telling you how to store a LiPo. You really have to use a smart charger with a built in or external balancer for a LiPo. The one I linked to will bring the LiPo batteries charge level to the recommended "storage" level. After which the night before game day you can charge it to full. This prolongs the life of the battery.
I can vouch for the ac680, I recently purchased it from hobbypartz as I was looking for a better charger for my lipos. It charges very quick and charges everything from lipo's to nimh, so pretty much every battery for airsoft, rc, and personal use like flashlights. I highly recommend it!