How well does the little window on the OEM battery work to show the health of the battery?
Mine was clearly black, and flat as a pancake so stuck a CTEK on it for around 24hours and it has gone in to maintenence mode now but that little "dot" still looks black to me :whistle:
Mine was clearly black, and flat as a pancake so stuck a CTEK on it for around 24hours and it has gone in to maintenence mode now but that little "dot" still looks black to me :whistle:

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