Help!!!!

[rotorwings]

boy said:

You could also try putting a volt meter cross the battery when you try and turn it over, if the volts drop from 12 then battery is dead.

Not entirely true. The battery size in Caterhams is under specified. They are sold as Motorbike/Ride on Mower batteries here in Germany.

With a brand new battery I see a voltage drop to 10.x volts with my 2.0 Duratec. I would say 9.5V to 11.xV is probably still fine. Anything below 9 is definitely an issue. Smaller engines should produce a lower voltage drop of course, but I would never expect to see a battery remain over 12v when cranking.

Edited by rotorwings on Friday 25th July 11:15

[Chrisp5782]

New battery on and she's running like a dream.