"Robin" wrote in message
...
snip
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.

Idiot boy questions for my education : might it have been an "ordinary"
lithium battery - i.e. not rechargeable? Unless the paperwork specified
the "solar" recharged a battery might it have been cheaper for the
manufacturer to stick a non-rechargeable in given the likely long life
with such a device - i.e. well beyond any reasonable claim for a refund
under the Sale of Gods Act?

Would the presence of a charging voltage and current from the clock (when
in bright light) be one test?
--
Robin
PM may be sent to rbw0{at}hotmail{dot}com
Yes, it could have been a non-rechargeable lithium battery. However there
is a voltage from the solar cell when in daylight (2.6V, no load, not
direct sunlight) though this is not enough to drive the clock. So I
suspect the recharging mechanism is actually present.

(I can't measure the current through the clock without 'breaking-open' the
circuit (ammeter must be ins series), which I don't want to do.)

Cheers

Cheers.