In message , Gareth
wrote

As I said, you do need to be sure that your clock was designed to work
with a lithium ion cell as they can burst into flames if incorrectly
charged. If you do try it, make sure you get cells with built in
protection modules and don't blame me if your house burns down.


Is it a rechargeable battery or just a lithium (long life) cell
designed(?) to run the clock for 10 years, supplemented by the solar
cell only when there is enough light? If it is the latter then there
should be no problem with recharging.
http://cpc.farnell.com/varta/craa/ba...-3v/dp/BT01078


--
Alan
news2009 {at} admac {dot} myzen {dot} co {dot} uk