Never used our like this but finf it a great bit of kit. With reference the charging, just purchase another cradle and mains adaptor from http://angelcareuk.co.uk/spare-parts - you'll need the 7.5v adaptor and Ac1100 cradle - total cost £22.50. This is what we did and it works really well, keeping the monitor charged overnight in the bedroom but also in the day and evenings downstairs.