BT Freestyle Landline Phones - Set of 4 Handsets & Bases 350 Quad

Base station is PAT tested. Photos show all base stations plugged in with phones charging (I used my own AAA rechargeable batteries - these are not supplied). On testing no visible signs of corrosion in the battery enclosure - phones were able to sit on relevent base station and start charging. Each handset needs 2xAAA batteries (rechargeable not supplied). There are 4 handsets which appear to be in good working order. The base station was attached to my landline and was able to dial out and receive calls.  For me, the line sound was clear. I have not tested the three 'satellite' stations for connecting to the base stations as I don't have instructions for the kit.  There is no reason why there should be a problem with it.  As mentioned the satellite bases work happily and charge the relevent phones. I have no idea whether there are any numbers or calls in the phones' memory already.