as for BHD accounts, when you do not us/have activity on a account for 6 months in a row it get's on hold. to use it again you need to pass by the branch, the service counter fills in a paper and you do a deposit on it at the cashier, and it is open again with your prior money of course still there.
i do not know the actual limit, if i recall correctly it was (many many years ago when i opened it) for US Accounts $200.- or $300.- Dollars on the Dollar Savings Accounts. if your balance dropped below that limit they charged $10.- of a account managing fee every Month. again, that was many years ago that Banco BHD explained that to me, so it may havechanged. but if you have such low balance on the account you should contact BHD Bank also to ask about that Limit, otherwise after some months most of the $150.- Balance would be gone with the wind for nothing.
Mike