65989-90B Harley Davidson Battery Replacements

There were really only two Harley bike series that utilized the 65989-90 battery: The 80 Cubic Inch FXD/FXST Dyna series and FLST Softail from 1991 thru 1996

The Harley Davidson part number 65989-90 has had several revisions over the years. They append the letter A, B or C after the number when a newer version is available. The version could change from a wet conventional style to an sealed AGM or simply provide higher cranking power, for example. The physical size of the 65989-90B battery remains the same through all versions.

Many people tend to look only at the Cold Cranking Amp as their sole metric for buying a new battery. But a true power balanced battery that pays attention to Amp Hour capacity as well as CCA is the mark of excellence. If you can increase both these numbers from what the OEM specs indicate you know you have a solid battery that will stand the test of time. Our Baseline AGM flush-mount Harley battery is the EXT series by East Penn Deka, the makers of the OEM Harley battery.

We still offer a wet conventional version along with two other advanced AGM products is provided by MotoBatt and Braille, with Braille being the best replacement option.