My MXS 5.0 will charge mine in a day. Extension lead to the bottom of the drive, pop it on in the morning and done before it gets dark. Thats with my E85. I'm sure an E89 will be the same. If yours has been on pretty much 24 hours, I'd say it's definitely charged but just a poor output from the green LED.Silverstar said:Question is does my battery need more charging or is it now done, should that light be brighter?