Using and charging Lipo batteries

[Sumilidon]

Hello all,

Well I finally got all my connectors soldered on and it;s time to charge these lipo batteries.

Obviously they come with a warning the size of China but no direct questions, so hoping for some help.

I understand I can balance charge at a rating determined by the MWH

eg. 5000mwh = 5A maximum charge rate

Whats the rule therefore for things like fast charging? Avoid at all costs? Run at a lower rate?