Battery drain

Having Problems with your BMW R1200RT/R1250RT? or have some Maintenance and Service questions?
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David.
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Bike Model and Year: R1200RT (Camhead) 2012
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Re: Battery drain

Post by David. »

ddevane wrote:Any idea what the hell is going on.
Fully charge the battery (the Haynes manual says 12.8 volts) & leave it to stand for at least one hour before carrying out any voltage tests.

See this Yuasa battery test procedure, http://www.yuasabatteries.com/faqs.php?action=1&id=30

The "Starting Load Test" might be worth trying to determine the battery capacity.

What battery is fitted to the bike.

13.85 volts when running sounds reasonable, does the voltage remain the same when high beam is selected.
Last edited by David. on Mon May 07, 2018 4:44 pm, edited 1 time in total.
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