Rough erratic tickover

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Dont know if this is common or if its just me......
After starting the bike and leaving on tickover to warm up ,the engine will repeatedly just cut out for maybe 1/2 a second (perhaps every 5 seconds)which will usually make the engine stall
The only way I have found to combat this is to bring up the revs on tickover to what is too fast a speed - any suggestions?
I am running with a knackered battery at the moment which will be changed tommorow/Saturday would that have any bearing?