Lipo charging after storage !

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Hi, I raced touring cars last year using 5300 7.4v HPI Plazma lipo batterys. about 4 months ago i stoped racing over winter so storage charged the batterys and now i am thinking about re charging them and going back to racing.

What i want to ask is what precautions do you have to take if any to re charge the batterys after they have been stored for 4 ish months ?

also what sort of stuff do you check on car after a while of not using it ? bearings, full clean, diff check ? it was rebuilt about 5 months ago.

Thanks for any help in advance

Dan