Blue marks on battery

Rosscoe

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Has anyone else seen these marks on their batteries? Bike is a Rail 7
20200427_081330.jpg
 
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Copper corrosion of terminals. Different metals turn different colours when they corrode

3836B16C-5AD1-4857-B5D8-D25CF690B0B4.jpeg
 
Yes agree is corrosion of the terminals.
Spray some electrical contact cleaner and make sure you dry well after washing the bike. Compressed air is best after cleaning the bike. You can pick some cheap compressors this days.
 
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