Anyone know anything about car diagnostics?

[robbocop33]

Got my Megane perfect now,all electrics sorted and new throttle body on,car's great.Bought a Renault can clip diagnostic tool and i'm trying to code a spare key card to the car.Got about half was through the procedure and was just about to do the key card in,keycard out section and a warning came up,insufficient power supply to continue??
Car battery is new,reading in the can clip software at the time was 12.2 volts with car not running,laptop was at 80% power level,didn't know which power level it meant but i'm thinking car battery one!:-) Would 12.2 volts cause a problem,i'd just been out in the car and as i said,Bosch battery is only 2 weeks old,thanks!

[wolf1]

Common practice when doing any form of re coding or mapping on a vehicle is to connect a stabilised power source to the car such as a battery pack etc to prevent any problems with low voltage due to the ignition on services draining the battery to under the safe voltage for such actions. The clip software you have is just alerting you to that to prevent any damage.

[E-bmw]

12.2 volts on a car battery is about 20% charged.

they are actually made up of 6 x 2.1 volt cells so 12.6 volts is fully charged, in practice it is quite often slightly more & every 0.1 volt drop is around 20% charge.

[robbocop33]

Just found out after the first reply here put me on the right track, Renault Clip needs 13 volts to do the key programming, i've tested the battery charger i've got on another battery and it's getting to 13 volts fine,so i'll stick the charger on it while im programming it. Thanks!