Kawasaki er5 randomly drains battery? Reg/rec?

[dansomers]

Hi All

My project RAT/Streetfighter bike (I'm learning as I go and doing cosmetics first) keeps running really well but then after about 4/6 days of being used every day, the battery just dies off. Last time it happened was last month, I haven't ridden her in maybe two weeks and she started first time and used her all week and started on the button

This is a brand new battery, once charged it's running fine again. I got the battery thinking the drain might just due to age.

One thing though, I rarely put the lights on (it's a bit ratty and needs work) but today I put the (stock) headlight on for maybe 10 minutes, then battery died, but no signs of dimmed lights until I nipped in the shop, battery dead on return. Bump and it's running. I thought the flashers were, well flashing a bit quicker than they should be though but I was concentrating on staying upright rather than the indicator lights so brushed it off

Do you think this is just the reg/rec that needs changing? I've read this is a known issue with the er5?

Please excuse the novice question

[J.M.]

Are all of your connections tight and clean?

4-6 days seems like a long period of time for a battery which isn't being charged to last for. Not unless you cover like 30 miles in those 4-6 days.

Do you own a multimeter?

Start the bike up and rev it to around 4-5k RPM and take a reading over the battery terminals. Anywhere between 13-14.5v is a nice voltage to have.
____________________
2004 R1 & 2018 XSR900

[dansomers]

[StormCrow]

Get yourself a multimeter. They're cheap as chips and make diagnosis of these sorts of problems a LOT easier!

Sounds a bit like an intermittent parasitic draw - maybe a live that keeps shorting out somewhere?