Lockdown has finally killed my car battery. Only being used a couple of times a week & then for just quick trips to the shops means that the battery has been killed. Despite taking a run out with it last weekend it has died. So new a battery was delivered this morning & a Memory Saver having been delivered earlier in the week it was time to replace it. The memory saver is a brilliantly simple bit of kit, and whilst it probably will have been lost by the time I next need it, well worth it for the effort that it saved.
Essentially it uses a 9v PP3 Battery to supply the car with enough power to keep the time & radio settings (as well as other stuff kept in the volatile memory in the car) whilst the battery is disconnected.