Journey to my first antweight

[louis]

I was looking at chargers for those 2s 180mah batteries: https://hobbyking.com/en_us/turnigy-...0863-5pcs.html

For now I have been recommended different models. But after some googling I wonder if those advice were good.

- https://hobbyking.com/en_us/turnigy-...e-charger.html
This is a 800mah charger. Which means 4.4C. Unless the charger is actually smart enough to use less power when charging small batteries. But for this price it would be surprising. And it actually needs an external power supply, so it's not that cheap.
- Imax b6. Genuine or not? It's not even sure that the genuine is genuine. Some people on rcgroups.com seems to dislike this charger.
- Turnigy P403 which has a bad review on rcgroups.com too but has the advantage of inbuilt power supply.

For chargers that can be configured such as the Imax B6 and the P403, what is the granularity of the power? If minimum is 0.1A, next possible value is 0.2A? 0.5A? 1A?
Is rcgroups.com forum a legitimate source?
Are all chargers able to charge through the balance connector only?