Intermitant Battery warning light

2005 Vauxhall Zafira 1.8 life auto
Car: Vauxhall Zafira
Year: 2005
Variant: 1.8 life auto
Categories: Electrics, ECU, Warnings & Lights
Battery warning light keeps coming on and going off intermittently while engine is running, which causes engine revs to drop and settle or rise and settle.
Done battery and alternator test with a multimeter and when engine idle speed changes so does the charge rating from 12.8 to 13.5.
Any help or advice would be appreciated.
Problem added: Dec 11, 2016 (7 years ago)
Get your battery load tested ,checking with a multi meter cant do that .
Answered Dec 11, 2016 (7 years ago)
Thanks for your suggestion, will try this
Answered Dec 11, 2016 (7 years ago)

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